Massachusetts Institute of Technology
MassachuseActive Patents
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Total Holdings
188
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| WO1997032182A1 | Method and apparatus for performing optical measurements us… | Expired / Lapsed | 1997-02-27 | — | 0 | Details |
| WO1995033970A1 | Rotating cam for optical systems | Expired / Lapsed | 1995-05-16 | — | 0 | Details |
| WO1995003356A1 | Nanoparticles and microparticles of non-linear hydrophilic-… | Expired / Lapsed | 1994-07-22 | — | 0 | Details |
| WO1992014399A1 | Devices and methods for optical diagnosis of tissue | Expired / Lapsed | 1992-02-25 | — | 0 | Details |
| WO1990009783A1 | Delivery system for controlled release of bioactive factors | Expired / Lapsed | 1990-02-22 | — | 0 | Details |
| WO1989000855A1 | Polyanhydrides with improved hydrolytic degradation propert… | Expired / Lapsed | 1988-07-28 | — | 0 | Details |
| WO1989001005A1 | One-step polymerization of polyanhydrides | Expired / Lapsed | 1988-07-28 | — | 0 | Details |
| WO1989001006A1 | Unsaturated polyanhydrides | Expired / Lapsed | 1988-07-28 | — | 0 | Details |
| WO1988007841A1 | Method and apparatus for laser angiosurgery | Expired / Lapsed | 1988-04-12 | — | 0 | Details |
| EP0266603A1 | Preparation of anhydride copolymers | Expired / Lapsed | 1987-10-16 | — | 8 | Details |
| EP0195375A2 | Catheter for laser angiosurgery | Expired / Lapsed | 1986-03-14 | — | 36 | Details |
| EP0152898A2 | Process for encapsulation and encapsulated active material … | Expired / Lapsed | 1985-02-12 | — | 13 | Details |
| WO1983003536A1 | A multilayer bioreplaceable blood vessel prosthesis | Expired / Lapsed | 1983-04-18 | — | 0 | Details |
| WO1983001384A1 | Cell-seeding procedures involving fibrous lattices | Expired / Lapsed | 1982-10-26 | — | 0 | Details |
| WO1982003764A1 | Fabrication of living blood vessels and glandular tissues | Expired / Lapsed | 1982-05-05 | — | 0 | Details |
| FR2318189A1 | BLOOD COMPATIBLE COLLAGEN-MUCOPOLYSACCHARIDE COMPOSITE MATE… | Expired / Lapsed | 1976-07-15 | — | 0 | Details |
| FR2332863A1 | MULTI-LAYER MEMBRANE USEFUL AS A SYNTHETIC SKIN | Expired / Lapsed | 1976-07-15 | — | 0 | Details |
| GB1515963A | Crosslinked collagen-mucopolysaccharide composite materials | Expired / Lapsed | 1976-07-08 | — | 0 | Details |
| GB1482954A | Electronic device | Expired / Lapsed | 1974-08-20 | — | 0 | Details |
| US6179858B1 | Stent expansion and apposition sensing | Expired / Lapsed | 1999-01-08 | 2001-01-30 | 17 | Details |
| US6060053A | Injectable chondrocyte-carrier suspension for treatment of … | Expired / Lapsed | 1996-05-29 | 2000-05-09 | 20 | Details |
| US6025725A | Electrically active resonant structures for wireless monito… | Expired / Lapsed | 1997-12-04 | 2000-02-15 | 34 | Details |
| US5906828A | Cell growth substrates with tethered cell growth effector m… | Expired / Lapsed | 1997-10-08 | 1999-05-25 | 5 | Details |
| US5869170A | Preparation of medical devices by solid free-form fabricati… | Expired / Lapsed | 1995-06-05 | 1999-02-09 | 13 | Details |
| US5837752A | Semi-interpenetrating polymer networks | Expired / Lapsed | 1997-07-17 | 1998-11-17 | 35 | Details |
| US5810888A | Thermodynamic adaptive phased array system for activating t… | Expired / Lapsed | 1997-06-26 | 1998-09-22 | 30 | Details |
| US5807437A | Three dimensional printing system | Expired / Lapsed | 1996-02-05 | 1998-09-15 | 52 | Details |
| US5784352A | Apparatus and method for accessing data on multilayered opt… | Expired / Lapsed | 1997-08-19 | 1998-07-21 | 58 | Details |
| US5766618A | Polymeric-hydroxyapatite bone composite | Expired / Lapsed | 1997-03-05 | 1998-06-16 | 14 | Details |
| US5748598A | Apparatus and methods for reading multilayer storage media … | Expired / Lapsed | 1995-12-22 | 1998-05-05 | 31 | Details |
| US5663063A | Method for producing polyester biopolymers | Expired / Lapsed | 1995-05-10 | 1997-09-02 | 12 | Details |
| US5626861A | Polymeric-hydroxyapatite bone composite | Expired / Lapsed | 1994-04-01 | 1997-05-06 | 7 | Details |
| US5593974A | Localized oligonucleotide therapy | Expired / Lapsed | 1995-01-06 | 1997-01-14 | 24 | Details |
| US5570095A | Automatic dependent surveillance air navigation system | Expired / Lapsed | 1994-04-01 | 1996-10-29 | 14 | Details |
| US5565215A | Biodegradable injectable particles for imaging | Expired / Lapsed | 1994-03-18 | 1996-10-15 | 33 | Details |
| US5540737A | Minimally invasive monopole phased array hyperthermia appli… | Expired / Lapsed | 1993-11-24 | 1996-07-30 | 33 | Details |
| US5534432A | Polyhydroxybutyrate polymerase | Expired / Lapsed | 1995-04-07 | 1996-07-09 | 11 | Details |
| US5518680A | Tissue regeneration matrices by solid free form fabrication… | Expired / Lapsed | 1994-02-23 | 1996-05-21 | 19 | Details |
| US5512669A | Gene encoding bacterial acetoacetyl-COA reductase | Expired / Lapsed | 1994-08-29 | 1996-04-30 | 10 | Details |
| US5496305A | Catheter for laser angiosurgery | Expired / Lapsed | 1992-01-29 | 1996-03-05 | 21 | Details |
| US5490962A | Preparation of medical devices by solid free-form fabricati… | Expired / Lapsed | 1993-10-18 | 1996-02-13 | 20 | Details |
| US5490882A | Process for removing loose powder particles from interior p… | Expired / Lapsed | 1992-11-30 | 1996-02-13 | 7 | Details |
| US5465147A | Method and apparatus for acquiring images using a ccd detec… | Expired / Lapsed | 1994-06-02 | 1995-11-07 | 37 | Details |
| US5452723A | Calibrated spectrographic imaging | Expired / Lapsed | 1992-07-24 | 1995-09-26 | 24 | Details |
| US5394413A | Passively Q-switched picosecond microlaser | Expired / Lapsed | 1994-03-04 | 1995-02-28 | 54 | Details |
| US5365539A | Microchip laser | Expired / Lapsed | 1993-10-22 | 1994-11-15 | 28 | Details |
| US5348259A | Flexible, articulable column | Expired / Lapsed | 1992-02-10 | 1994-09-20 | 20 | Details |
| US5321501A | Method and apparatus for optical imaging with means for con… | Expired / Lapsed | 1992-04-29 | 1994-06-14 | 51 | Details |
| US5318870A | Method of patterning a phenolic polymer film without photoa… | Expired / Lapsed | 1992-07-31 | 1994-06-07 | 8 | Details |
| US5318024A | Laser endoscope for spectroscopic imaging | Expired / Lapsed | 1991-12-16 | 1994-06-07 | 18 | Details |
| US5290275A | Catheter for laser angiosurgery | Expired / Lapsed | 1991-07-16 | 1994-03-01 | 28 | Details |
| US5265116A | Microchip laser | Expired / Lapsed | 1993-02-03 | 1993-11-23 | 22 | Details |
| US5256164A | Method of fabricating a microchip laser | Expired / Lapsed | 1992-12-30 | 1993-10-26 | 38 | Details |
| US5251645A | Adaptive nulling hyperthermia array | Expired / Lapsed | 1991-06-26 | 1993-10-12 | 33 | Details |
| US5214749A | Dynamic control of a robot with its center of mass decouple… | Expired / Lapsed | 1991-06-12 | 1993-05-25 | 26 | Details |
| US5204055A | Three-dimensional printing techniques | Expired / Lapsed | 1989-12-08 | 1993-04-20 | 44 | Details |
| US5201318A | Contour mapping of spectral diagnostics | Expired / Lapsed | 1991-10-04 | 1993-04-13 | 23 | Details |
| US5115445A | Microchip laser array | Expired / Lapsed | 1990-08-22 | 1992-05-19 | 58 | Details |
| US5114719A | Extended drug delivery of small, water-soluble molecules | Expired / Lapsed | 1989-09-14 | 1992-05-19 | 7 | Details |
| US5100668A | Controlled release systems containing heparin and growth fa… | Expired / Lapsed | 1988-06-14 | 1992-03-31 | 13 | Details |
| US5078137A | Apparatus for measuring oxygen partial pressure and tempera… | Expired / Lapsed | 1986-05-05 | 1992-01-07 | 8 | Details |
| US5022745A | Electrostatically deformable single crystal dielectrically … | Expired / Lapsed | 1989-09-07 | 1991-06-11 | 13 | Details |
| US4999417A | Biodegradable polymer compositions | Expired / Lapsed | 1989-03-30 | 1991-03-12 | 22 | Details |
| US4967745A | Multi-fiber plug for a laser catheter | Expired / Lapsed | 1988-08-17 | 1990-11-06 | 13 | Details |
| US4960109A | Multi-purpose temperature sensing probe for hyperthermia th… | Expired / Lapsed | 1988-06-21 | 1990-10-02 | 11 | Details |
| US4955893A | Prosthesis for promotion of nerve regeneration | Expired / Lapsed | 1989-03-23 | 1990-09-11 | 41 | Details |
| US4948587A | Ultrasound enhancement of transbuccal drug delivery | Expired / Lapsed | 1988-08-18 | 1990-08-14 | 21 | Details |
| US4947840A | Biodegradable templates for the regeneration of tissues | Expired / Lapsed | 1987-08-21 | 1990-08-14 | 13 | Details |
| US4946929A | Bioerodible articles useful as implants and prostheses havi… | Expired / Lapsed | 1987-06-15 | 1990-08-07 | 8 | Details |
| US4943750A | Electrostatic micromotor | Expired / Lapsed | 1989-07-03 | 1990-07-24 | 31 | Details |
| US4938217A | Electronically-controlled variable focus ultrasound hyperth… | Expired / Lapsed | 1988-06-21 | 1990-07-03 | 12 | Details |
| US4916204A | Pure polyanhydride from dicarboxylic acid and coupling agent | Expired / Lapsed | 1987-07-31 | 1990-04-10 | 8 | Details |
| US4913142A | Catheter for laser angiosurgery | Expired / Lapsed | 1987-05-26 | 1990-04-03 | 24 | Details |
| US4906465A | Antithrombogenic devices containing polysiloxanes | Expired / Lapsed | 1988-03-16 | 1990-03-06 | 15 | Details |
| US4906474A | Bioerodible polyanhydrides for controlled drug delivery | Expired / Lapsed | 1984-05-21 | 1990-03-06 | 5 | Details |
| US4902289A | Multilayer bioreplaceable blood vessel prosthesis | Expired / Lapsed | 1988-08-09 | 1990-02-20 | 17 | Details |
| US4898734A | Polymer composite for controlled release or membrane format… | Expired / Lapsed | 1988-02-29 | 1990-02-06 | 18 | Details |
| US4893624A | Diffuse focus ultrasound hyperthermia system | Expired / Lapsed | 1988-06-21 | 1990-01-16 | 38 | Details |
| US4888176A | Controlled drug delivery high molecular weight polyanhydrid… | Expired / Lapsed | 1987-06-12 | 1989-12-19 | 21 | Details |
| US4886870A | Bioerodible articles useful as implants and prostheses havi… | Expired / Lapsed | 1985-02-15 | 1989-12-12 | 8 | Details |
| US4883666A | Controlled drug delivery system for treatment of neural dis… | Expired / Lapsed | 1987-04-29 | 1989-11-28 | 24 | Details |
| US4881237A | Hybrid two-dimensional surface-emitting laser arrays | Expired / Lapsed | 1988-08-26 | 1989-11-14 | 35 | Details |
| US4800100A | Combined ion and molecular beam apparatus and method for de… | Expired / Lapsed | 1987-10-27 | 1989-01-24 | 59 | Details |
| US4791490A | Detector for three-dimensional optical imaging | Expired / Lapsed | 1987-07-02 | 1988-12-13 | 30 | Details |
| US4789724A | Preparation of anhydride copolymers | Expired / Lapsed | 1986-10-17 | 1988-12-06 | 7 | Details |
| US4787900A | Process for forming multilayer bioreplaceable blood vessel … | Expired / Lapsed | 1987-01-12 | 1988-11-29 | 16 | Details |
| USRE32782E | Method for determining in vivo, bone strength | Expired / Lapsed | 1985-12-20 | 1988-11-15 | 3 | Details |
| US4780212A | Ultrasound enchancement of membrane permeability | Expired / Lapsed | 1987-07-31 | 1988-10-25 | 24 | Details |
| US4767402A | Ultrasound enhancement of transdermal drug delivery | Expired / Lapsed | 1986-07-08 | 1988-08-30 | 13 | Details |
| US4749620A | Encapsulated active material system | Expired / Lapsed | 1985-09-18 | 1988-06-07 | 9 | Details |
| US4733189A | Magnetic resonance imaging systems | Expired / Lapsed | 1986-06-03 | 1988-03-22 | 19 | Details |
| US4721601A | Molecule-based microelectronic devices | Expired / Lapsed | 1984-11-23 | 1988-01-26 | 14 | Details |
| US4690551A | Laser radar utilizing pulse-tone waveform | Expired / Lapsed | 1985-04-19 | 1987-09-01 | 8 | Details |
| US4669467A | Mode mixer for a laser catheter | Expired / Lapsed | 1985-03-22 | 1987-06-02 | 5 | Details |
| US4666362A | Parallel link manipulators | Expired / Lapsed | 1985-05-07 | 1987-05-19 | 24 | Details |
| US4660563A | Method and means for detection of arterial lesions | Expired / Lapsed | 1985-09-11 | 1987-04-28 | 10 | Details |
| US4657543A | Ultrasonically modulated polymeric devices for delivering c… | Expired / Lapsed | 1984-07-23 | 1987-04-14 | 7 | Details |
| US4648892A | Method for making optical shield for a laser catheter | Expired / Lapsed | 1985-03-22 | 1987-03-10 | 6 | Details |
| US4647445A | Radiolabelled lipoproteins and method for making same | Expired / Lapsed | 1984-03-28 | 1987-03-03 | 18 | Details |
| US4615904A | Maskless growth of patterned films | Expired / Lapsed | 1985-04-01 | 1986-10-07 | 21 | Details |
| US4604346A | Skin-equivalent prepared by the use of punch biopsy | Expired / Lapsed | 1984-10-09 | 1986-08-05 | 14 | Details |
| US4547622A | Solar cells and photodetectors | Expired / Lapsed | 1984-04-27 | 1985-10-15 | 13 | Details |
| US4546500A | Fabrication of living blood vessels and glandular tissues | Expired / Lapsed | 1982-02-26 | 1985-10-15 | 19 | Details |
| US4539716A | Fabrication of living blood vessels and glandular tissues | Expired / Lapsed | 1981-05-08 | 1985-09-10 | 20 | Details |
| US4522753A | Method for preserving porosity in porous materials | Expired / Lapsed | 1981-07-29 | 1985-06-11 | 10 | Details |
| US4515430A | Integrated optical transducers | Expired / Lapsed | 1983-06-10 | 1985-05-07 | 27 | Details |
| US4505266A | Method of using a fibrous lattice | Expired / Lapsed | 1984-04-17 | 1985-03-19 | 7 | Details |
| US4500919A | Color reproduction system | Expired / Lapsed | 1982-05-04 | 1985-02-19 | 25 | Details |
| US4485097A | Bone-equivalent and method for preparation thereof | Expired / Lapsed | 1983-05-25 | 1984-11-27 | 5 | Details |
| US4485096A | Tissue-equivalent and method for preparation thereof | Expired / Lapsed | 1982-05-26 | 1984-11-27 | 38 | Details |
| US4482669A | Preceramic organosilazane polymers | Expired / Lapsed | 1984-01-19 | 1984-11-13 | 40 | Details |
| US4458678A | Cell-seeding procedures involving fibrous lattices | Expired / Lapsed | 1981-10-26 | 1984-07-10 | 18 | Details |
| CA1170001A | Method for preserving porosity in porous materials | Expired / Lapsed | 1981-07-15 | 1984-07-03 | 10 | Details |
| US4448718A | Method for the preparation of collagen-glycosaminoglycan co… | Expired / Lapsed | 1983-09-13 | 1984-05-15 | 11 | Details |
| US4426712A | Correlation system for global position receiver | Expired / Lapsed | 1981-05-22 | 1984-01-17 | 8 | Details |
| US4420873A | Optical guided wave devices employing semiconductor-insulat… | Expired / Lapsed | 1980-01-25 | 1983-12-20 | 6 | Details |
| US4418691A | Method of promoting the regeneration of tissue at a wound | Expired / Lapsed | 1981-10-26 | 1983-12-06 | 20 | Details |
| US4414147A | Methods of decreasing the hydrophobicity of fibroblast and … | Expired / Lapsed | 1981-04-17 | 1983-11-08 | 5 | Details |
| US4404256A | Surface fluorinated polymers | Expired / Lapsed | 1980-12-01 | 1983-09-13 | 12 | Details |
| US4397828A | Stable liquid polymeric precursor to silicon nitride and pr… | Expired / Lapsed | 1981-11-16 | 1983-08-09 | 7 | Details |
| US4305666A | Optical heterodyne detection system and method | Expired / Lapsed | 1979-10-24 | 1981-12-15 | 18 | Details |
| US4304866A | Transplantable sheets of living keratinous tissue | Expired / Lapsed | 1979-11-14 | 1981-12-08 | 7 | Details |
| US4298280A | Infrared radar system | Expired / Lapsed | 1979-09-25 | 1981-11-03 | 15 | Details |
| US4293654A | Cell culture microcarriers | Expired / Lapsed | 1979-07-02 | 1981-10-06 | 13 | Details |
| US4286026A | Article for implanting radioactive metal on a substrate | Expired / Lapsed | 1979-08-14 | 1981-08-25 | 4 | Details |
| US4283799A | Pre-coated body implant | Expired / Lapsed | 1979-09-10 | 1981-08-18 | 5 | Details |
| US4264750A | Process for fluorinating polymers | Expired / Lapsed | 1980-03-26 | 1981-04-28 | 10 | Details |
| US4252759A | Cross flow filtration molding method | Expired / Lapsed | 1979-04-11 | 1981-02-24 | 6 | Details |
| US4248675A | Method of forming electrical contact and antireflection lay… | Expired / Lapsed | 1980-02-25 | 1981-02-03 | 3 | Details |
| US4243923A | Servo-controlled mobility device | Expired / Lapsed | 1979-01-22 | 1981-01-06 | 16 | Details |
| US4227941A | Shallow-homojunction solar cells | Expired / Lapsed | 1979-03-21 | 1980-10-14 | 7 | Details |
| US4223411A | Internal laryngeal prosthesis | Expired / Lapsed | 1978-08-07 | 1980-09-23 | 10 | Details |
| US4195643A | Diagnostic force analysis system | Expired / Lapsed | 1976-12-27 | 1980-04-01 | 6 | Details |
| US4174952A | Immunoassay by light scattering intensity anisotropy measur… | Expired / Lapsed | 1978-01-23 | 1979-11-20 | 6 | Details |
| US4174536A | Digital communications controller with firmware control | Expired / Lapsed | 1977-01-21 | 1979-11-13 | 36 | Details |
| US4166669A | Planar optical waveguide, modulator, variable coupler and s… | Expired / Lapsed | 1977-05-13 | 1979-09-04 | 35 | Details |
| US4156835A | Servo-controlled mobility device | Expired / Lapsed | 1974-05-29 | 1979-05-29 | 16 | Details |
| US4135822A | Laser gyroscope | Expired / Lapsed | 1976-05-06 | 1979-01-23 | 22 | Details |
| US4110122A | High-intensity, solid-state-solar cell device | Expired / Lapsed | 1976-05-26 | 1978-08-29 | 27 | Details |
| US4108643A | Method for forming high fraction solid metal compositions a… | Expired / Lapsed | 1976-09-22 | 1978-08-22 | 43 | Details |
| US4086539A | First-order phase-lock loop | Expired / Lapsed | 1972-08-11 | 1978-04-25 | 7 | Details |
| US4080264A | Immunoassay by light scattering spectroscopy | Expired / Lapsed | 1976-03-01 | 1978-03-21 | 17 | Details |
| US4076916A | Fluorinated functionalized polymers | Expired / Lapsed | 1975-11-03 | 1978-02-28 | 10 | Details |
| US4066821A | Tungsten carbide tools treated with group IVB and VB metals | Expired / Lapsed | 1976-01-22 | 1978-01-03 | 27 | Details |
| US4059982A | Apparatus for the measurement of thermal properties of biom… | Expired / Lapsed | 1975-08-29 | 1977-11-29 | 34 | Details |
| US4060081A | Multilayer membrane useful as synthetic skin | Expired / Lapsed | 1975-07-15 | 1977-11-29 | 30 | Details |
| US4059461A | Method for improving the crystallinity of semiconductor fil… | Expired / Lapsed | 1975-12-10 | 1977-11-22 | 39 | Details |
| US4051371A | Opto-acoustic spectroscopy employing amplitude and waveleng… | Expired / Lapsed | 1976-04-26 | 1977-09-27 | 18 | Details |
| US4036693A | Treatment of cell culture microcarries | Expired / Lapsed | 1976-02-02 | 1977-07-19 | 16 | Details |
| US3970839A | Generating and using coherent optical radiation | Expired / Lapsed | 1974-12-20 | 1976-07-20 | 9 | Details |
| US3965277A | Photoformed plated interconnection of embedded integrated c… | Expired / Lapsed | 1974-02-28 | 1976-06-22 | 15 | Details |
| US3949320A | Miniature crystalline laser | Expired / Lapsed | 1974-11-29 | 1976-04-06 | 21 | Details |
| US3922618A | Multiple transition laser | Expired / Lapsed | 1974-05-28 | 1975-11-25 | 23 | Details |
| US3897766A | Apparatus adapted to opto-electrically monitor the output o… | Expired / Lapsed | 1973-10-10 | 1975-08-05 | 26 | Details |
| US3898453A | Solid state optical junction devices and arrays and systems… | Expired / Lapsed | 1973-08-20 | 1975-08-05 | 25 | Details |
| US3827433A | Respiratory device and procedure | Expired / Lapsed | 1972-03-07 | 1974-08-06 | 12 | Details |
| US3792245A | Double-scaled autocorrelator | Expired / Lapsed | 1972-08-21 | 1974-02-12 | 15 | Details |
| US3764856A | Heat transfer in electronic equipment | Expired / Lapsed | 1972-05-17 | 1973-10-09 | 8 | Details |
| US3742265A | Superconducting apparatus with double armature structure | Expired / Lapsed | 1972-05-25 | 1973-06-26 | 21 | Details |
| US3720884A | Method and apparatus for compression of optical laser pulses | Expired / Lapsed | 1970-03-23 | 1973-03-13 | 13 | Details |
| US3673612A | Non-thrombogenic materials and methods for their preparation | Expired / Lapsed | 1970-08-28 | 1972-07-04 | 63 | Details |
| US3667031A | Phase-locked resolver tracking system | Expired / Lapsed | 1970-08-18 | 1972-05-30 | 10 | Details |
| US3649838A | Semiconductor device for producing radiation in response to… | Expired / Lapsed | 1968-07-25 | 1972-03-14 | 20 | Details |
| US3594476A | Submicron aqueous aerosols containing lecithin | Expired / Lapsed | 1969-05-12 | 1971-07-20 | 0 | Details |
| US3591779A | Variable frequency compensation for sampled data control sy… | Expired / Lapsed | 1968-02-21 | 1971-07-06 | 13 | Details |
| US3590248A | Laser arrays | Expired / Lapsed | 1965-04-13 | 1971-06-29 | 15 | Details |
| US3568087A | Optically pumped semiconductor laser | Expired / Lapsed | 1965-07-16 | 1971-03-02 | 2 | Details |
| US3564535A | Vector generation by analog integration of a train of stand… | Expired / Lapsed | 1967-02-15 | 1971-02-16 | 0 | Details |
| US3505561A | Analog pen tracking on a cathode ray tube display device | Expired / Lapsed | 1967-02-14 | 1970-04-07 | 0 | Details |
| US3504335A | Aircraft take-off monitoring system | Expired / Lapsed | 1967-08-14 | 1970-03-31 | 0 | Details |
| US3497698A | Metal insulator semiconductor radiation detector | Expired / Lapsed | 1968-01-12 | 1970-02-24 | 0 | Details |
| US3486007A | Rate counter | Expired / Lapsed | 1964-09-29 | 1969-12-23 | 0 | Details |
| US3475410A | Treatment of a film of cellulose to introduce amino groups … | Expired / Lapsed | 1967-02-08 | 1969-10-28 | 0 | Details |
| US3471644A | Voice vocoding and transmitting system | Expired / Lapsed | 1966-05-02 | 1969-10-07 | 0 | Details |
| US3469922A | Gas ring laser gyroscope system | Expired / Lapsed | 1967-03-27 | 1969-09-30 | 0 | Details |
| US3469107A | Stimulated brillouin parametric devices | Expired / Lapsed | 1964-08-14 | 1969-09-23 | 0 | Details |
| US3440643A | Analog to digital converter | Expired / Lapsed | 1963-12-19 | 1969-04-22 | 2 | Details |
| US3412382A | Shared-access data processing system | Expired / Lapsed | 1965-11-26 | 1968-11-19 | 0 | Details |
| US3381136A | Interferometric fluorescent lifetime measuring arrangement | Expired / Lapsed | 1964-06-17 | 1968-04-30 | 0 | Details |
| US3317855A | Oscillator including a tunnel diode as a two-level switch | Expired / Lapsed | 1965-07-15 | 1967-05-02 | 2 | Details |
| US3309643A | Electric heating element | Expired / Lapsed | 1964-01-02 | 1967-03-14 | 2 | Details |
| US3258718A | Semiconductor infrared maser | Expired / Lapsed | 1963-02-07 | 1966-06-28 | 0 | Details |
| US3221151A | Adaptive control system using a performance reference model | Expired / Lapsed | 1962-01-22 | 1965-11-30 | 2 | Details |
| US3221230A | Adaptive control method and apparatus for applying same | Expired / Lapsed | 1962-01-22 | 1965-11-30 | 2 | Details |
| US3221229A | Model reference adaptive control system | Expired / Lapsed | 1962-01-22 | 1965-11-30 | 2 | Details |
| US3192508A | Computing system | Expired / Lapsed | 1961-04-24 | 1965-06-29 | 2 | Details |
| US3167663A | Magneto-semiconductor devices | Expired / Lapsed | 1962-08-06 | 1965-01-26 | 2 | Details |
| US2149076A | Method for the manufacture of crystalline bodies | Expired / Lapsed | 1935-10-18 | 1939-02-28 | 0 | Details |