National Aeronautics and Space Administration
National AActive Patents
0
Total Holdings
345
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| EP0488004A2 | Microwave temperature profiler for clear air turbulance pre… | Expired / Lapsed | 1991-11-18 | — | 7 | Details |
| GB1513827A | Computer interface system | Expired / Lapsed | 1975-07-29 | — | 0 | Details |
| DE2442516A1 | SURGICAL INSTRUMENT FOR WASHING OUT AND REMOVING CELL TISSUE | Expired / Lapsed | 1974-09-05 | — | 0 | Details |
| DE2302690A1 | NARROWBAND FREQUENCY MODULATION RECEIVER | Expired / Lapsed | 1973-01-19 | — | 0 | Details |
| US6135729A | Blood pump bearing system | Expired / Lapsed | 1999-07-09 | 2000-10-24 | 19 | Details |
| US6109270A | Multimodality instrument for tissue characterization | Expired / Lapsed | 1998-02-02 | 2000-08-29 | 22 | Details |
| US6000844A | Method and apparatus for the portable identification of mat… | Expired / Lapsed | 1997-03-04 | 1999-12-14 | 20 | Details |
| US5957672A | Blood pump bearing system | Expired / Lapsed | 1996-06-17 | 1999-09-28 | 10 | Details |
| US5828336A | Robust real-time wide-area differential GPS navigation | Expired / Lapsed | 1996-03-29 | 1998-10-27 | 19 | Details |
| US5692882A | Axial pump | Expired / Lapsed | 1996-05-22 | 1997-12-02 | 26 | Details |
| US5645900A | Diamond composite films for protective coatings on metals a… | Expired / Lapsed | 1994-10-25 | 1997-07-08 | 6 | Details |
| US5601086A | Beat frequency ultrasonic microsphere contrast agent detect… | Expired / Lapsed | 1995-05-12 | 1997-02-11 | 15 | Details |
| US5527588A | Micro heat pipe panels and method for producing same | Expired / Lapsed | 1995-05-03 | 1996-06-18 | 7 | Details |
| US5394906A | Method and apparatus for weaving curved material preforms | Expired / Lapsed | 1993-02-10 | 1995-03-07 | 29 | Details |
| US5369012A | Method of making a membrane having hydrophilic and hydropho… | Expired / Lapsed | 1992-03-26 | 1994-11-29 | 16 | Details |
| US5294873A | Kinematic functions for redundancy resolution using configu… | Expired / Lapsed | 1992-10-27 | 1994-03-15 | 22 | Details |
| US5261874A | Extra-corporeal blood access, sensing, and radiation method… | Expired / Lapsed | 1991-09-16 | 1993-11-16 | 25 | Details |
| US5241315A | Micro pulse laser radar | Expired / Lapsed | 1992-08-13 | 1993-08-31 | 7 | Details |
| US5216484A | Real-time imaging spectrometer | Expired / Lapsed | 1991-12-09 | 1993-06-01 | 32 | Details |
| US5155034A | Three-dimensional cell to tissue assembly process | Expired / Lapsed | 1989-03-02 | 1992-10-13 | 9 | Details |
| US5141806A | Microporous structure with layered interstitial surface tre… | Expired / Lapsed | 1989-10-31 | 1992-08-25 | 18 | Details |
| US5133721A | Device for removing foreign objects from anatomic organs | Expired / Lapsed | 1991-03-19 | 1992-07-28 | 10 | Details |
| US5117689A | Microwave temperature profiler for clear air turbulence pre… | Expired / Lapsed | 1990-11-27 | 1992-06-02 | 8 | Details |
| US5079600A | High resolution patterning on solid substrates | Expired / Lapsed | 1988-04-14 | 1992-01-07 | 37 | Details |
| US5057338A | Process for application of powder particles to filamentary … | Expired / Lapsed | 1990-05-16 | 1991-10-15 | 3 | Details |
| US5049796A | Robust high-performance control for robotic manipulators | Expired / Lapsed | 1989-05-17 | 1991-09-17 | 26 | Details |
| US4974230A | Tm,Ho:YLF laser end-pumped by a semiconductor diode laser a… | Expired / Lapsed | 1988-08-23 | 1990-11-27 | 14 | Details |
| US4902450A | Multi-element spherical shell generation | Expired / Lapsed | 1988-09-28 | 1990-02-20 | 18 | Details |
| US4888595A | Acquisition signal transmitter | Expired / Lapsed | 1988-02-29 | 1989-12-19 | 16 | Details |
| US4875346A | Two-statge sorption type cryogenic refrigerator including h… | Expired / Lapsed | 1989-01-31 | 1989-10-24 | 21 | Details |
| US4776541A | Fluidic momentum controller | Expired / Lapsed | 1987-02-27 | 1988-10-11 | 8 | Details |
| US4736247A | Range and range rate system | Expired / Lapsed | 1987-05-04 | 1988-04-05 | 13 | Details |
| US4683809A | Lightweight piston | Expired / Lapsed | 1985-05-02 | 1987-08-04 | 26 | Details |
| US4677636A | Multiplex electric discharge gas laser system | Expired / Lapsed | 1985-10-23 | 1987-06-30 | 19 | Details |
| US4662955A | Method of thermal strain hysteresis reduction in metal matr… | Expired / Lapsed | 1985-10-09 | 1987-05-05 | 5 | Details |
| US4645358A | Measurement apparatus and procedure for the determination o… | Expired / Lapsed | 1985-12-03 | 1987-02-24 | 20 | Details |
| US4620898A | Ion beam sputter etching | Expired / Lapsed | 1985-09-13 | 1986-11-04 | 25 | Details |
| US4557097A | Sequentially deployable maneuverable tetrahedral beam | Expired / Lapsed | 1983-09-08 | 1985-12-10 | 7 | Details |
| US4556986A | Optical stereo video signal processor | Expired / Lapsed | 1983-03-09 | 1985-12-03 | 28 | Details |
| US4545586A | Damping seal for turbomachinery | Expired / Lapsed | 1985-01-18 | 1985-10-08 | 10 | Details |
| US4523810A | Optical fiber coupling method and apparatus | Expired / Lapsed | 1982-01-26 | 1985-06-18 | 8 | Details |
| US4522844A | Corrosion resistant coating | Expired / Lapsed | 1983-09-30 | 1985-06-11 | 15 | Details |
| US4512699A | Daze fasteners | Expired / Lapsed | 1983-05-17 | 1985-04-23 | 8 | Details |
| US4495044A | Diamondlike flakes | Expired / Lapsed | 1984-03-19 | 1985-01-22 | 22 | Details |
| US4490229A | Deposition of diamondlike carbon films | Expired / Lapsed | 1984-07-09 | 1984-12-25 | 21 | Details |
| US4474180A | Apparatus for disintegrating kidney stones | Expired / Lapsed | 1982-05-13 | 1984-10-02 | 20 | Details |
| US4473259A | Linear magnetic bearings | Expired / Lapsed | 1982-09-08 | 1984-09-25 | 24 | Details |
| US4472728A | Imaging X-ray spectrometer | Expired / Lapsed | 1982-02-19 | 1984-09-18 | 14 | Details |
| US4472716A | Phase sensitive guidance sensor for wire-following vehicles | Expired / Lapsed | 1981-10-30 | 1984-09-18 | 11 | Details |
| US4463357A | Method and apparatus for calibrating the ionosphere and app… | Expired / Lapsed | 1981-11-17 | 1984-07-31 | 10 | Details |
| US4445118A | Navigation system and method | Expired / Lapsed | 1981-05-22 | 1984-04-24 | 27 | Details |
| US4437962A | Diamondlike flake composites | Expired / Lapsed | 1983-05-17 | 1984-03-20 | 20 | Details |
| US4433439A | Heat resistant protective hand covering | Expired / Lapsed | 1982-06-30 | 1984-02-28 | 12 | Details |
| US4432853A | Method of making an ion beam sputter-etched ventricular cat… | Expired / Lapsed | 1982-11-24 | 1984-02-21 | 18 | Details |
| US4411380A | Metal matrix composite structural panel construction | Expired / Lapsed | 1981-06-30 | 1983-10-25 | 8 | Details |
| US4408597A | Prosthetic occlusive device for an internal passageway | Expired / Lapsed | 1982-04-23 | 1983-10-11 | 7 | Details |
| US4404469A | Real-time 3-D x-ray and gamma-ray viewer | Expired / Lapsed | 1981-05-22 | 1983-09-13 | 23 | Details |
| US4399515A | Self-correcting electronically scanned pressure sensor | Expired / Lapsed | 1981-03-31 | 1983-08-16 | 7 | Details |
| US4394777A | Method of and system for classifying emergency locating tra… | Expired / Lapsed | 1979-12-12 | 1983-07-19 | 14 | Details |
| US4377169A | Ion beam sputter-etched ventricular catheter for hydrocepha… | Expired / Lapsed | 1981-06-10 | 1983-03-22 | 9 | Details |
| US4346715A | Hyperthermia heating apparatus | Expired / Lapsed | 1980-05-13 | 1982-08-31 | 8 | Details |
| US4345153A | Low intensity X-ray and gamma-ray spectrometer | Expired / Lapsed | 1980-07-30 | 1982-08-17 | 35 | Details |
| US4341925A | Random digital encryption secure communication system | Expired / Lapsed | 1978-04-28 | 1982-07-27 | 4 | Details |
| US4332441A | Coherently pulsed laser source | Expired / Lapsed | 1980-05-15 | 1982-06-01 | 10 | Details |
| US4329385A | Texturing polymer surfaces by transfer casting | Expired / Lapsed | 1980-12-19 | 1982-05-11 | 8 | Details |
| US4320397A | Echo tracker/range finder for radars and sonars | Expired / Lapsed | 1979-06-29 | 1982-03-16 | 20 | Details |
| US4294264A | Cervix-to-rectum measuring device in a radiation applicator… | Expired / Lapsed | 1977-05-12 | 1981-10-13 | 2 | Details |
| US4294261A | Logic-controlled occlusive cuff system | Expired / Lapsed | 1976-06-01 | 1981-10-13 | 5 | Details |
| US4279018A | PN Lock indicator for dithered PN code tracking loop | Expired / Lapsed | 1979-03-06 | 1981-07-14 | 8 | Details |
| US4276553A | Apparatus and method for determining the position of a radi… | Expired / Lapsed | 1977-03-24 | 1981-06-30 | 12 | Details |
| US4258366A | Multifrequency broadband polarized horn antenna | Expired / Lapsed | 1979-01-31 | 1981-03-24 | 5 | Details |
| US4256093A | Prosthetic urinary sphincter | Expired / Lapsed | 1978-10-12 | 1981-03-17 | 5 | Details |
| US4246901A | Urine collection device | Expired / Lapsed | 1978-05-30 | 1981-01-27 | 29 | Details |
| US4243327A | Double-beam optical method and apparatus for measuring ther… | Expired / Lapsed | 1979-01-31 | 1981-01-06 | 19 | Details |
| US4234971A | Precise RF timing signal distribution to remote stations | Expired / Lapsed | 1979-09-24 | 1980-11-18 | 8 | Details |
| US4228422A | System for displaying at a remote station data generated at… | Expired / Lapsed | 1978-11-30 | 1980-10-14 | 14 | Details |
| US4221005A | Pseudonoise code tracking loop | Expired / Lapsed | 1979-05-21 | 1980-09-02 | 17 | Details |
| US4212297A | Micro-fluid exchange coupling apparatus | Expired / Lapsed | 1978-10-16 | 1980-07-15 | 2 | Details |
| US4199448A | Reverse osmosis membrane of high urea rejection properties | Expired / Lapsed | 1976-06-09 | 1980-04-22 | 19 | Details |
| US4193570A | Active nutation controller | Expired / Lapsed | 1978-04-19 | 1980-03-18 | 6 | Details |
| US4190060A | Sweat collection capsule | Expired / Lapsed | 1978-04-19 | 1980-02-26 | 5 | Details |
| US4186749A | Induction powered biological radiosonde | Expired / Lapsed | 1977-05-12 | 1980-02-05 | 4 | Details |
| US4182158A | Static pressure orifice system testing method and apparatus | Expired / Lapsed | 1978-08-17 | 1980-01-08 | 13 | Details |
| US4178100A | Distributed-switch Dicke radiometers | Expired / Lapsed | 1978-03-29 | 1979-12-11 | 27 | Details |
| US4176662A | Apparatus for endoscopic examination | Expired / Lapsed | 1977-06-17 | 1979-12-04 | 4 | Details |
| US4170776A | System for near real-time crustal deformation monitoring | Expired / Lapsed | 1977-12-21 | 1979-10-09 | 8 | Details |
| US4157718A | Intra-ocular pressure normalization technique and equipment | Expired / Lapsed | 1977-08-31 | 1979-06-12 | 12 | Details |
| US4156304A | Biomedical ultrasonoscope | Expired / Lapsed | 1976-09-30 | 1979-05-29 | 4 | Details |
| US4154230A | EKG and ultrasonoscope display | Expired / Lapsed | 1977-01-17 | 1979-05-15 | 11 | Details |
| US4149665A | Bonding machine for forming a solar array strip | Expired / Lapsed | 1977-11-04 | 1979-04-17 | 21 | Details |
| US4149278A | Compact artificial hand | Expired / Lapsed | 1977-09-27 | 1979-04-17 | 3 | Details |
| US4148031A | Phase conjugation method and apparatus for an active retrod… | Expired / Lapsed | 1977-03-16 | 1979-04-03 | 28 | Details |
| US4142101A | Low intensity X-ray and gamma-ray imaging device | Expired / Lapsed | 1977-07-20 | 1979-02-27 | 39 | Details |
| US4139862A | Interactive color display for multispectral imagery using c… | Expired / Lapsed | 1977-09-08 | 1979-02-13 | 35 | Details |
| US4134683A | Multispectral imaging and analysis system | Expired / Lapsed | 1976-03-05 | 1979-01-16 | 9 | Details |
| US4133697A | Solar array strip and a method for forming the same | Expired / Lapsed | 1977-06-24 | 1979-01-09 | 2 | Details |
| US4122725A | Length mode piezoelectric ultrasonic transducer for inspect… | Expired / Lapsed | 1976-06-16 | 1978-10-31 | 2 | Details |
| US4119926A | Apparatus and method for stabilized phase detection for bin… | Expired / Lapsed | 1977-12-08 | 1978-10-10 | 19 | Details |
| US4119996A | Complementary DMOS-VMOS integrated circuit structure | Expired / Lapsed | 1977-07-20 | 1978-10-10 | 20 | Details |
| US4111058A | Electrically scanned pressure sensor module with in situ ca… | Expired / Lapsed | 1977-09-22 | 1978-09-05 | 12 | Details |
| US4100531A | Bit error rate measurement above and below bit rate trackin… | Expired / Lapsed | 1977-02-03 | 1978-07-11 | 16 | Details |
| US4092648A | Reflex feed system for dual frequency antenna with frequenc… | Expired / Lapsed | 1977-03-24 | 1978-05-30 | 7 | Details |
| US4091166A | Boron trifluoride coatings for thermoplastic materials and … | Expired / Lapsed | 1977-06-17 | 1978-05-23 | 13 | Details |
| US4088408A | Device for measuring the contour of a surface | Expired / Lapsed | 1976-11-08 | 1978-05-09 | 13 | Details |
| US4077678A | Energy storage apparatus | Expired / Lapsed | 1976-07-30 | 1978-03-07 | 15 | Details |
| US4068495A | Closed loop spray cooling apparatus | Expired / Lapsed | 1976-03-31 | 1978-01-17 | 11 | Details |
| US4064566A | Method of adhering bone to a rigid substrate using a graphi… | Expired / Lapsed | 1976-04-06 | 1977-12-27 | 8 | Details |
| US4061974A | Ultra stable frequency distribution system | Expired / Lapsed | 1976-06-21 | 1977-12-06 | 10 | Details |
| US4061146A | Tissue macerating instrument | Expired / Lapsed | 1976-04-15 | 1977-12-06 | 14 | Details |
| US4055004A | Full color hybrid display for aircraft simulators | Expired / Lapsed | 1975-10-17 | 1977-10-25 | 9 | Details |
| US4053229A | 2°/90° Laboratory scattering photometer | Expired / Lapsed | 1976-01-13 | 1977-10-11 | 14 | Details |
| US4053231A | Interferometer mirror tilt correcting system | Expired / Lapsed | 1975-12-18 | 1977-10-11 | 9 | Details |
| US4052705A | Memory device for two-dimensional radiant energy array comp… | Expired / Lapsed | 1976-02-13 | 1977-10-04 | 12 | Details |
| US4046462A | Three-dimensional tracking solar energy concentrator and me… | Expired / Lapsed | 1976-04-28 | 1977-09-06 | 13 | Details |
| US4046262A | Anthropomorphic master/slave manipulator system | Expired / Lapsed | 1974-01-24 | 1977-09-06 | 30 | Details |
| US4041391A | Pseudo noise code and data transmission method and apparatus | Expired / Lapsed | 1975-12-30 | 1977-08-09 | 16 | Details |
| US4038705A | Rotational joint assembly for the prosthetic leg | Expired / Lapsed | 1976-07-30 | 1977-08-02 | 5 | Details |
| US4035062A | Method and apparatus for producing an image from a transpar… | Expired / Lapsed | 1975-12-30 | 1977-07-12 | 17 | Details |
| US4035065A | Lightweight reflector assembly | Expired / Lapsed | 1975-09-24 | 1977-07-12 | 20 | Details |
| US4033349A | Corneal seal device | Expired / Lapsed | 1976-04-13 | 1977-07-05 | 10 | Details |
| US4033882A | Wideband heterodyne receiver for laser communication system | Expired / Lapsed | 1976-03-18 | 1977-07-05 | 10 | Details |
| US4025783A | Gregorian all-reflective optical system | Expired / Lapsed | 1976-04-28 | 1977-05-24 | 15 | Details |
| US4025875A | Length controlled stabilized mode-lock Nd:YAG laser | Expired / Lapsed | 1976-01-05 | 1977-05-24 | 8 | Details |
| US4006631A | Magnetic heading reference | Expired / Lapsed | 1975-10-16 | 1977-02-08 | 5 | Details |
| US4001552A | Method and apparatus for measuring web material wound on a … | Expired / Lapsed | 1975-04-04 | 1977-01-04 | 20 | Details |
| US3995644A | Percutaneous connector device | Expired / Lapsed | 1975-09-16 | 1976-12-07 | 2 | Details |
| US3989602A | Method of making reinforced composite structures | Expired / Lapsed | 1974-04-19 | 1976-11-02 | 7 | Details |
| US3988677A | Space communication system for compressed data with a conca… | Expired / Lapsed | 1975-06-23 | 1976-10-26 | 12 | Details |
| US3984686A | Focused laser doppler velocimeter | Expired / Lapsed | 1975-12-03 | 1976-10-05 | 11 | Details |
| US3977771A | Optical noise suppression device and method | Expired / Lapsed | 1975-06-30 | 1976-08-31 | 26 | Details |
| US3977787A | High-resolution fourier interferometer-spectrophotopolarime… | Expired / Lapsed | 1975-05-05 | 1976-08-31 | 20 | Details |
| US3978187A | Method of making hollow elastomeric bodies | Expired / Lapsed | 1975-03-28 | 1976-08-31 | 10 | Details |
| US3971364A | Catheter tip force transducer for cardiovascular research | Expired / Lapsed | 1975-05-16 | 1976-07-27 | 12 | Details |
| US3971363A | Myocardium wall thickness transducer and measuring method | Expired / Lapsed | 1975-05-05 | 1976-07-27 | 12 | Details |
| US3972038A | Accelerometer telemetry system | Expired / Lapsed | 1975-03-28 | 1976-07-27 | 10 | Details |
| US3971930A | Polarization compensator for optical communications | Expired / Lapsed | 1974-04-24 | 1976-07-27 | 16 | Details |
| US3971362A | Miniature ingestible telemeter devices to measure deep-body… | Expired / Lapsed | 1972-10-27 | 1976-07-27 | 9 | Details |
| US3957030A | Solar energy power system | Expired / Lapsed | 1975-03-21 | 1976-05-18 | 4 | Details |
| US3949404A | Highly efficient antenna system using a corrugated horn and… | Expired / Lapsed | 1974-12-19 | 1976-04-06 | 12 | Details |
| US3949206A | Filtering device | Expired / Lapsed | 1974-12-17 | 1976-04-06 | 2 | Details |
| US3949400A | Position determination systems | Expired / Lapsed | 1973-11-28 | 1976-04-06 | 4 | Details |
| US3941355A | Mixing insert for foam dispensing apparatus | Expired / Lapsed | 1974-06-12 | 1976-03-02 | 2 | Details |
| US3937215A | Therapeutic hand exerciser | Expired / Lapsed | 1975-06-03 | 1976-02-10 | 14 | Details |
| US3937212A | Miniature muscle displacement transducer | Expired / Lapsed | 1974-12-27 | 1976-02-10 | 8 | Details |
| US3930735A | Traffic survey system | Expired / Lapsed | 1974-12-11 | 1976-01-06 | 7 | Details |
| US3922930A | Remotely operable articulated manipulator | Expired / Lapsed | 1974-12-23 | 1975-12-02 | 9 | Details |
| US3924239A | Dichroic plate | Expired / Lapsed | 1974-06-27 | 1975-12-02 | 10 | Details |
| US3916380A | Multi-computer multiple data path hardware exchange system | Expired / Lapsed | 1974-11-06 | 1975-10-28 | 34 | Details |
| US3916316A | Multichannel logarithmic RF level detector | Expired / Lapsed | 1974-03-20 | 1975-10-28 | 4 | Details |
| US3915572A | Combined dual scatter, local oscillator laser doppler veloc… | Expired / Lapsed | 1974-02-27 | 1975-10-28 | 16 | Details |
| US3915416A | Annular momentum control device used for stabilization of s… | Expired / Lapsed | 1973-08-01 | 1975-10-28 | 10 | Details |
| US3910257A | Medical subject monitoring systems | Expired / Lapsed | 1973-04-25 | 1975-10-07 | 9 | Details |
| US3906393A | Acoustically controlled distributed feedback laser | Expired / Lapsed | 1973-06-28 | 1975-09-16 | 12 | Details |
| US3900847A | Satellite aided vehicle avoidance system | Expired / Lapsed | 1972-01-21 | 1975-08-19 | 23 | Details |
| US3893449A | Reference apparatus for medical ultrasonic transducer | Expired / Lapsed | 1973-12-21 | 1975-07-08 | 7 | Details |
| US3888362A | Cooperative multiaxis sensor for teleoperation of article m… | Expired / Lapsed | 1973-05-31 | 1975-06-10 | 9 | Details |
| US3889264A | Vehicle locating system utilizing AM broadcasting station c… | Expired / Lapsed | 1973-05-21 | 1975-06-10 | 12 | Details |
| US3883689A | Servo-controlled intravital microscope system | Expired / Lapsed | 1973-09-04 | 1975-05-13 | 10 | Details |
| US3883215A | Holographic system for non-destructive testing | Expired / Lapsed | 1973-08-08 | 1975-05-13 | 5 | Details |
| US3882846A | Insulated electrocardiographic electrodes | Expired / Lapsed | 1973-04-04 | 1975-05-13 | 6 | Details |
| US3869680A | Dually mode-locked nd:yag laser | Expired / Lapsed | 1973-08-31 | 1975-03-04 | 11 | Details |
| US3869615A | Multiplate focusing collimator | Expired / Lapsed | 1973-06-28 | 1975-03-04 | 12 | Details |
| US3856402A | Clear air turbulence detector | Expired / Lapsed | 1973-04-11 | 1974-12-24 | 13 | Details |
| US3847141A | Ultrasonic bone densitometer | Expired / Lapsed | 1973-08-08 | 1974-11-12 | 6 | Details |
| US3847115A | System for depositing thin films | Expired / Lapsed | 1973-05-02 | 1974-11-12 | 4 | Details |
| US3845466A | System and method for character recognition | Expired / Lapsed | 1972-07-31 | 1974-10-29 | 11 | Details |
| US3820529A | Conductive elastomeric extensometer | Expired / Lapsed | 1972-11-07 | 1974-06-28 | 4 | Details |
| US3817622A | Measurement of plasma temperature and density using radiati… | Expired / Lapsed | 1972-12-26 | 1974-06-18 | 10 | Details |
| US3816657A | Differential phase-shift-keyed communication system | Expired / Lapsed | 1972-10-12 | 1974-06-11 | 16 | Details |
| US3815109A | Miniature multichannel biotelemeter system | Expired / Lapsed | 1972-07-05 | 1974-06-04 | 13 | Details |
| US3814083A | Apparatus and method for processing korotkov sounds | Expired / Lapsed | 1972-05-24 | 1974-06-04 | 5 | Details |
| US3814653A | Method of laminating structural members | Expired / Lapsed | 1972-01-20 | 1974-06-04 | 0 | Details |
| US3811429A | Arterial pulse wave pressure transducer | Expired / Lapsed | 1972-09-25 | 1974-05-21 | 8 | Details |
| US3809871A | Programmable physiological infusion | Expired / Lapsed | 1972-12-01 | 1974-05-07 | 7 | Details |
| US3806815A | Decision feedback loop for tracking a polyphase modulated c… | Expired / Lapsed | 1973-03-06 | 1974-04-23 | 4 | Details |
| US3803445A | Rotating raster generator | Expired / Lapsed | 1972-11-17 | 1974-04-09 | 3 | Details |
| US3802253A | Ultrasonic biomedical measuring and recording apparatus | Expired / Lapsed | 1972-08-18 | 1974-04-09 | 3 | Details |
| US3799149A | Metabolic analyzer | Expired / Lapsed | 1972-12-26 | 1974-03-26 | 19 | Details |
| US3795910A | Microwave power transmission system wherein level of transm… | Expired / Lapsed | 1973-03-13 | 1974-03-05 | 4 | Details |
| US3795900A | Multifunction audio digitizer | Expired / Lapsed | 1971-11-09 | 1974-03-05 | 2 | Details |
| US3783250A | Adaptive voting computer system | Expired / Lapsed | 1972-02-25 | 1974-01-01 | 9 | Details |
| US3781111A | Short range laser obstacle detector | Expired / Lapsed | 1972-03-16 | 1973-12-25 | 9 | Details |
| US3781902A | Recorder/processor apparatus | Expired / Lapsed | 1971-09-07 | 1973-12-25 | 27 | Details |
| US3765229A | Ultrasonic scanner for radial and flat panels | Expired / Lapsed | 1972-03-27 | 1973-10-16 | 11 | Details |
| US3764790A | Technique for extending the frequency range of digital divi… | Expired / Lapsed | 1972-03-30 | 1973-10-09 | 6 | Details |
| US3764097A | Lightweight, variable solidity knitted parachute fabric | Expired / Lapsed | 1971-12-23 | 1973-10-09 | 9 | Details |
| US3759588A | High speed hybrid bearing comprising a fluid bearing & a ro… | Expired / Lapsed | 1971-11-12 | 1973-09-18 | 9 | Details |
| US3759249A | Respiratory analysis system and method | Expired / Lapsed | 1971-08-19 | 1973-09-18 | 9 | Details |
| US3759443A | Thermal flux transfer system | Expired / Lapsed | 1971-06-16 | 1973-09-18 | 8 | Details |
| US3758112A | Foot pedal operated fluid type exercising device | Expired / Lapsed | 1971-05-26 | 1973-09-11 | 10 | Details |
| US3756920A | In biological samples my measuring light reactions automati… | Expired / Lapsed | 1971-04-30 | 1973-09-04 | 0 | Details |
| US3754263A | Lightning tracking system | Expired / Lapsed | 1972-01-28 | 1973-08-21 | 6 | Details |
| US3749831A | Television multiplexing system | Expired / Lapsed | 1972-05-05 | 1973-07-31 | 11 | Details |
| US3750168A | Apparatus for aiding a pilot in avoiding a midair collision… | Expired / Lapsed | 1972-04-07 | 1973-07-31 | 12 | Details |
| US3750067A | Ferrofluidic solenoid | Expired / Lapsed | 1972-03-16 | 1973-07-31 | 13 | Details |
| US3745149A | Preparation of polyimides from mixtures of monomeric diamin… | Expired / Lapsed | 1971-09-29 | 1973-07-10 | 10 | Details |
| US3736938A | Ophthalmic method and apparatus | Expired / Lapsed | 1971-11-15 | 1973-06-05 | 15 | Details |
| US3733424A | Electronic strain-level counter | Expired / Lapsed | 1971-07-08 | 1973-05-15 | 3 | Details |
| US3732409A | Counting digital filters | Expired / Lapsed | 1972-03-20 | 1973-05-08 | 25 | Details |
| US3732158A | Method and apparatus for sputtering utilizing an apertured … | Expired / Lapsed | 1971-01-14 | 1973-05-08 | 0 | Details |
| US3729736A | Code regenerative clean-up loop transponder for a {82 -type… | Expired / Lapsed | 1971-11-08 | 1973-04-24 | 12 | Details |
| US3729129A | Numerical computer peripheral interactive device with manua… | Expired / Lapsed | 1971-06-22 | 1973-04-24 | 5 | Details |
| US3714645A | Rate data encoder | Expired / Lapsed | 1970-10-26 | 1973-01-30 | 12 | Details |
| US3713163A | Plural beam antenna | Expired / Lapsed | 1971-11-22 | 1973-01-23 | 9 | Details |
| US3702898A | Electronic video editor | Expired / Lapsed | 1970-08-04 | 1972-11-14 | 2 | Details |
| US3701894A | Apparatus for deriving synchronizing pulses from pulses in … | Expired / Lapsed | 1970-09-11 | 1972-10-31 | 6 | Details |
| US3700868A | Logical function generator | Expired / Lapsed | 1970-12-16 | 1972-10-24 | 7 | Details |
| US3694094A | Borescope with variable angle scope | Expired / Lapsed | 1970-12-22 | 1972-09-26 | 7 | Details |
| US3693418A | Adjustable force probe | Expired / Lapsed | 1970-12-17 | 1972-09-26 | 10 | Details |
| US3679360A | Process for the preparation of brushite crystals | Expired / Lapsed | 1970-06-26 | 1972-07-25 | 0 | Details |
| US3676772A | Metallic intrusion detector system | Expired / Lapsed | 1970-08-18 | 1972-07-11 | 3 | Details |
| US3671497A | Polyurethane resins from hydroxy terminated perfluoro ethers | Expired / Lapsed | 1970-12-18 | 1972-06-20 | 3 | Details |
| US3669110A | Compressible biomedical electrode | Expired / Lapsed | 1970-11-05 | 1972-06-13 | 1 | Details |
| US3670097A | Stereoscopic television system and apparatus | Expired / Lapsed | 1969-10-20 | 1972-06-13 | 19 | Details |
| US3667039A | Electricity measurement devices employing liquid crystallin… | Expired / Lapsed | 1970-06-17 | 1972-05-30 | 8 | Details |
| US3665313A | Location identification system | Expired / Lapsed | 1970-07-13 | 1972-05-23 | 60 | Details |
| US3665481A | Multi-purpose antenna employing dish reflector with plural … | Expired / Lapsed | 1970-05-12 | 1972-05-23 | 12 | Details |
| US3664874A | Tungsten contacts on silicon substrates | Expired / Lapsed | 1969-12-31 | 1972-05-23 | 9 | Details |
| US3665467A | Clear air turbulence detector | Expired / Lapsed | 1969-11-19 | 1972-05-23 | 9 | Details |
| US3665064A | Method of making a perspiration resistant biopotential elec… | Expired / Lapsed | 1969-05-09 | 1972-05-23 | 1 | Details |
| US3663885A | Family of frequency to amplitude converters | Expired / Lapsed | 1971-04-16 | 1972-05-16 | 11 | Details |
| US3662744A | Method for measuring cutaneous sensory perception | Expired / Lapsed | 1970-12-02 | 1972-05-16 | 21 | Details |
| US3658569A | Selective nickel deposition | Expired / Lapsed | 1969-11-13 | 1972-04-25 | 8 | Details |
| US3651008A | Polymeric compositions and their method of manufacture | Expired / Lapsed | 1967-12-22 | 1972-03-21 | 0 | Details |
| US3649462A | Variable angle tube holder | Expired / Lapsed | 1969-11-05 | 1972-03-14 | 0 | Details |
| US3648275A | Buffered analog converter | Expired / Lapsed | 1970-04-03 | 1972-03-07 | 3 | Details |
| US3631737A | Remote control manipulator for zero gravity environment | Expired / Lapsed | 1970-09-18 | 1972-01-04 | 9 | Details |
| US3632996A | Digital quasi-exponential function generator | Expired / Lapsed | 1970-05-14 | 1972-01-04 | 8 | Details |
| US3629161A | Ionene membrane separator | Expired / Lapsed | 1969-09-24 | 1971-12-21 | 0 | Details |
| US3623360A | Pressure transducer | Expired / Lapsed | 1970-03-24 | 1971-11-30 | 0 | Details |
| US3621130A | System for quantizing graphic displays | Expired / Lapsed | 1969-11-21 | 1971-11-16 | 6 | Details |
| US3616528A | Solid state matrices | Expired / Lapsed | 1968-11-15 | 1971-11-02 | 0 | Details |
| US3615465A | Photoetching of metal-oxide layers | Expired / Lapsed | 1969-06-13 | 1971-10-26 | 4 | Details |
| US3614327A | Data multiplexer using tree switching configuration | Expired / Lapsed | 1970-10-05 | 1971-10-19 | 9 | Details |
| US3611801A | Respiration monitor | Expired / Lapsed | 1968-10-28 | 1971-10-12 | 0 | Details |
| US3602923A | Open-type urine receptacle | Expired / Lapsed | 1970-08-13 | 1971-09-07 | 8 | Details |
| US3603946A | Telemetry-actuated switch | Expired / Lapsed | 1969-12-23 | 1971-09-07 | 15 | Details |
| US3603690A | Optical systems having spatially invariant outputs | Expired / Lapsed | 1969-10-22 | 1971-09-07 | 20 | Details |
| US3603686A | Acquisition and tracking system for optical radar | Expired / Lapsed | 1969-06-04 | 1971-09-07 | 9 | Details |
| US3603683A | Altitude-sensing device | Expired / Lapsed | 1968-12-16 | 1971-09-07 | 7 | Details |
| US3593138A | Satellite interlace synchronization system | Expired / Lapsed | 1968-07-31 | 1971-07-13 | 16 | Details |
| US3579146A | Digital modulator and demodulator | Expired / Lapsed | 1969-12-31 | 1971-05-18 | 12 | Details |
| US3579122A | Digital filter for reducing sampling jitter in digital cont… | Expired / Lapsed | 1969-12-23 | 1971-05-18 | 11 | Details |
| US3575602A | Optical frequency waveguide and transmission system | Expired / Lapsed | 1969-01-24 | 1971-04-20 | 10 | Details |
| US3572935A | Fringe counter for interferometers | Expired / Lapsed | 1968-10-09 | 1971-03-30 | 9 | Details |
| US3568702A | Pneumatic oscillator | Expired / Lapsed | 1969-03-07 | 1971-03-09 | 8 | Details |
| US3568748A | Resilient wheel | Expired / Lapsed | 1969-02-17 | 1971-03-09 | 7 | Details |
| US3569744A | Resettable monostable pulse generator | Expired / Lapsed | 1968-08-30 | 1971-03-09 | 16 | Details |
| US3567927A | Ion microprobe mass spectrometer for analyzing fluid materi… | Expired / Lapsed | 1969-04-11 | 1971-03-02 | 7 | Details |
| US3566268A | Rapid sync-acquisition system | Expired / Lapsed | 1968-02-09 | 1971-02-23 | 0 | Details |
| US3556048A | Vacuum evaporator with electromagnetic ion steering | Expired / Lapsed | 1968-09-05 | 1971-01-19 | 11 | Details |
| US3556634A | Optical frequency waveguide | Expired / Lapsed | 1965-10-11 | 1971-01-19 | 0 | Details |
| US3550129A | Satellite aided vehicle avoidance system | Expired / Lapsed | 1969-03-28 | 1970-12-22 | 0 | Details |
| US3547105A | Flexible conductive disc electrode | Expired / Lapsed | 1968-08-29 | 1970-12-15 | 0 | Details |
| US3545275A | Transducer circuit and catheter transducer | Expired / Lapsed | 1968-09-12 | 1970-12-08 | 0 | Details |
| US3543050A | Peak polarity selector | Expired / Lapsed | 1968-10-30 | 1970-11-24 | 0 | Details |
| US3540045A | Electromagnetic polarization systems and methods | Expired / Lapsed | 1969-01-10 | 1970-11-10 | 0 | Details |
| US3540054A | Radar antenna system for acquisition and tracking | Expired / Lapsed | 1968-10-09 | 1970-11-10 | 0 | Details |
| US3537096A | Integrated time shared instrumentation display | Expired / Lapsed | 1967-10-17 | 1970-10-27 | 0 | Details |
| US3535683A | Electronic checkout system for space vehicles | Expired / Lapsed | 1969-11-07 | 1970-10-20 | 0 | Details |
| US3534650A | Fastener apparatus | Expired / Lapsed | 1968-12-12 | 1970-10-20 | 0 | Details |
| US3535013A | Focused image holography with extended sources | Expired / Lapsed | 1967-10-20 | 1970-10-20 | 0 | Details |
| US3535110A | Method of producing refractory bodies having controlled por… | Expired / Lapsed | 1967-06-09 | 1970-10-20 | 0 | Details |
| US3535560A | Data processor having multiple sections activated at differ… | Expired / Lapsed | 1967-06-09 | 1970-10-20 | 0 | Details |
| US3534727A | Biomedical electrode arrangement | Expired / Lapsed | 1967-03-24 | 1970-10-20 | 0 | Details |
| US3534365A | Tracking antenna system | Expired / Lapsed | 1969-05-01 | 1970-10-13 | 0 | Details |
| US3532427A | Laser doppler system for measuring three dimensional vector… | Expired / Lapsed | 1969-04-22 | 1970-10-06 | 0 | Details |
| US3532985A | Time division radio relay synchronizing system using differ… | Expired / Lapsed | 1968-03-13 | 1970-10-06 | 0 | Details |
| US3532807A | Automatic closed circuit television arc guidance control | Expired / Lapsed | 1967-10-05 | 1970-10-06 | 0 | Details |
| US3526473A | Process for conditioning tanned sharkskin and articles made… | Expired / Lapsed | 1968-06-19 | 1970-09-01 | 0 | Details |
| US3526134A | Thermobulb mount | Expired / Lapsed | 1968-05-21 | 1970-09-01 | 0 | Details |
| US3517171A | Self-testing and repairing computer | Expired / Lapsed | 1967-10-30 | 1970-06-23 | 0 | Details |
| US3517318A | Synchronous counter | Expired / Lapsed | 1967-07-24 | 1970-06-23 | 0 | Details |
| US3516970A | Direct synthesis of polymeric schiff bases from two amines … | Expired / Lapsed | 1966-11-09 | 1970-06-23 | 0 | Details |
| US3516971A | Aromatic diamine-aromatic dialdehyde high - molecular - wei… | Expired / Lapsed | 1966-11-09 | 1970-06-23 | 0 | Details |
| US3508541A | Electrode construction | Expired / Lapsed | 1967-10-16 | 1970-04-28 | 0 | Details |
| US3501704A | Frequency shift keyed demodulator | Expired / Lapsed | 1967-11-27 | 1970-03-17 | 0 | Details |
| US3501750A | Data compression processor | Expired / Lapsed | 1967-09-19 | 1970-03-17 | 0 | Details |
| US3501701A | Digital frequency discriminator | Expired / Lapsed | 1967-06-19 | 1970-03-17 | 0 | Details |
| US3495262A | Horn feed having overlapping apertures | Expired / Lapsed | 1969-02-10 | 1970-02-10 | 0 | Details |
| US3493294A | Retrodirective modulator | Expired / Lapsed | 1967-08-07 | 1970-02-03 | 0 | Details |
| US3493522A | Synthesis of polymeric schiff bases by reaction of acetals … | Expired / Lapsed | 1966-11-09 | 1970-02-03 | 0 | Details |
| US3493524A | Azine polymers and process for preparing the same | Expired / Lapsed | 1966-11-09 | 1970-02-03 | 0 | Details |
| US3486279A | Deployable lattice column | Expired / Lapsed | 1967-11-30 | 1969-12-30 | 0 | Details |
| US3484712A | Adaptive system and method for signal generation | Expired / Lapsed | 1967-10-13 | 1969-12-16 | 0 | Details |
| US3481638A | Method of forming ceramic-to-metal seal | Expired / Lapsed | 1968-01-25 | 1969-12-02 | 0 | Details |
| US3474413A | Parallel generation of the check bits of a pn sequence | Expired / Lapsed | 1965-11-22 | 1969-10-21 | 0 | Details |
| US3472019A | Time synchronization system utilizing moon reflected coded … | Expired / Lapsed | 1967-12-21 | 1969-10-14 | 0 | Details |
| US3471856A | Position location and data collection system and method | Expired / Lapsed | 1967-05-22 | 1969-10-07 | 0 | Details |
| US3470313A | Narrow bandwidth video | Expired / Lapsed | 1966-05-13 | 1969-09-30 | 0 | Details |
| US3470318A | Solid state television camera system | Expired / Lapsed | 1966-05-11 | 1969-09-30 | 0 | Details |
| US3465638A | Hypervelocity gun | Expired / Lapsed | 1967-08-23 | 1969-09-09 | 0 | Details |
| US3464018A | Digitally controlled frequency synthesizer | Expired / Lapsed | 1966-08-26 | 1969-08-26 | 0 | Details |
| US3460781A | Tape recorder | Expired / Lapsed | 1967-09-06 | 1969-08-12 | 0 | Details |
| US3453546A | Telemeter adaptable for implanting in an animal | Expired / Lapsed | 1966-11-04 | 1969-07-01 | 0 | Details |
| US3448341A | Electrical load protection device | Expired / Lapsed | 1968-09-19 | 1969-06-03 | 0 | Details |
| US3447154A | Cooperative doppler radar system | Expired / Lapsed | 1967-10-17 | 1969-05-27 | 0 | Details |
| US3446558A | Method for measuring the characteristics of a gas | Expired / Lapsed | 1965-12-08 | 1969-05-27 | 0 | Details |
| US3444380A | Electronic background suppression method and apparatus for … | Expired / Lapsed | 1966-10-26 | 1969-05-13 | 0 | Details |
| US3435246A | Light radiation direction indicator with a baffle of two pa… | Expired / Lapsed | 1966-02-09 | 1969-03-25 | 0 | Details |
| US3433953A | Compensating radiometer | Expired / Lapsed | 1967-01-04 | 1969-03-18 | 0 | Details |
| US3431460A | Method of erasing target material of a vidicon tube or the … | Expired / Lapsed | 1967-06-27 | 1969-03-04 | 0 | Details |
| US3431397A | Heat shield oven | Expired / Lapsed | 1966-01-20 | 1969-03-04 | 0 | Details |
| US3426746A | Method and apparatus for attaching physiological monitoring… | Expired / Lapsed | 1966-10-10 | 1969-02-11 | 2 | Details |
| US3424966A | Synchronous servo loop control system | Expired / Lapsed | 1966-05-04 | 1969-01-28 | 0 | Details |
| US3422324A | Pressure variable capacitor | Expired / Lapsed | 1967-05-17 | 1969-01-14 | 0 | Details |
| US3421768A | Foil seal | Expired / Lapsed | 1966-04-20 | 1969-01-14 | 0 | Details |
| US3421105A | Automatic acquisition system for phase-lock loop | Expired / Lapsed | 1967-02-28 | 1969-01-07 | 0 | Details |
| US3420223A | Electrode for biological recording | Expired / Lapsed | 1964-12-31 | 1969-01-07 | 0 | Details |
| US3412729A | Method and apparatus for continuously monitoring blood oxyg… | Expired / Lapsed | 1965-08-30 | 1968-11-26 | 0 | Details |
| US3409252A | Controllers | Expired / Lapsed | 1966-09-19 | 1968-11-05 | 0 | Details |
| US3393380A | Phase locked phase modulator including a voltage controlled… | Expired / Lapsed | 1966-03-15 | 1968-07-16 | 2 | Details |
| US3390378A | Comparator for the comparison of two binary numbers | Expired / Lapsed | 1965-10-22 | 1968-06-25 | 0 | Details |
| US3384075A | Digital cardiotachometer system | Expired / Lapsed | 1965-10-01 | 1968-05-21 | 0 | Details |
| US3383461A | Reduced bandwidth video communication system utilizing samp… | Expired / Lapsed | 1964-08-17 | 1968-05-14 | 0 | Details |
| US3379885A | Sight switch using an infrared source and sensor | Expired / Lapsed | 1966-03-01 | 1968-04-23 | 0 | Details |
| US3375451A | Adaptive tracking notch filter system | Expired / Lapsed | 1965-06-17 | 1968-03-26 | 0 | Details |
| US3365657A | Power supply | Expired / Lapsed | 1966-03-04 | 1968-01-23 | 2 | Details |
| US3364366A | Multiple slope sweep generator | Expired / Lapsed | 1965-08-26 | 1968-01-16 | 0 | Details |
| US3361067A | Piezoelectric pump | Expired / Lapsed | 1966-09-09 | 1968-01-02 | 0 | Details |
| US3100294A | Time-division multiplexer | Expired / Lapsed | 1961-09-29 | 1963-08-06 | 2 | Details |
| US2512191A | Broad band directional coupler | Expired / Lapsed | 1946-01-07 | 1950-06-20 | 0 | Details |
| US2440999A | Compressed neutron source | Expired / Lapsed | 1943-07-01 | 1948-05-04 | 0 | Details |
| US2437876A | Signal receiver and warning device | Expired / Lapsed | 1945-07-09 | 1948-03-16 | 0 | Details |
| US2437608A | Coaxial optical system for displacement gauges | Expired / Lapsed | 1946-03-08 | 1948-03-09 | 0 | Details |
| US2437329A | Surgical instrument for curetting | Expired / Lapsed | 1945-10-31 | 1948-03-09 | 0 | Details |
| US2437482A | High-frequency electrical transmission line | Expired / Lapsed | 1942-12-07 | 1948-03-09 | 0 | Details |
| US2437060A | Process of recovering gamma globulins from human blood serum | Expired / Lapsed | 1945-10-23 | 1948-03-02 | 0 | Details |
| US2436891A | Electronic system for differentiating voltage wave forms | Expired / Lapsed | 1945-02-19 | 1948-03-02 | 0 | Details |
| US2436890A | Modulated saw-tooth sweep generator | Expired / Lapsed | 1945-01-24 | 1948-03-02 | 0 | Details |
| US2436512A | Pulse frequency selective recorder | Expired / Lapsed | 1946-01-17 | 1948-02-24 | 0 | Details |
| US2436084A | Ionization chamber | Expired / Lapsed | 1943-11-27 | 1948-02-17 | 0 | Details |
| US2435820A | Transfusion equipment | Expired / Lapsed | 1944-09-05 | 1948-02-10 | 0 | Details |
| US2435227A | Method and apparatus for producing articles from powdered m… | Expired / Lapsed | 1942-08-25 | 1948-02-03 | 0 | Details |
| US2414579A | Rocket launcher for aircraft | Expired / Lapsed | 1944-10-20 | 1947-01-21 | 0 | Details |
| US2414106A | Cable connector | Expired / Lapsed | 1944-01-18 | 1947-01-14 | 0 | Details |
| US2403706A | Metallic coating | Expired / Lapsed | 1944-04-06 | 1946-07-09 | 0 | Details |
| US2401289A | Photoelectric timer for roentgen photography | Expired / Lapsed | 1943-07-22 | 1946-05-28 | 0 | Details |
| US2401288A | Method of and apparatus for measuring radiations | Expired / Lapsed | 1943-05-12 | 1946-05-28 | 0 | Details |
| US2396474A | Desiccator unit | Expired / Lapsed | 1944-03-06 | 1946-03-12 | 0 | Details |
| US2395309A | Direct reading sound pressure meter | Expired / Lapsed | 1943-09-30 | 1946-02-19 | 0 | Details |
| US2392873A | Art of locating objects by heat radiation | Expired / Lapsed | 1934-04-03 | 1946-01-15 | 0 | Details |
| US2391678A | Magnetostriction transducer | Expired / Lapsed | 1945-08-29 | 1945-12-25 | 0 | Details |
| US2391489A | Method of molding | Expired / Lapsed | 1943-05-10 | 1945-12-25 | 0 | Details |
| US2390848A | Rodenticide | Expired / Lapsed | 1943-12-31 | 1945-12-11 | 0 | Details |