Northrop Grumman Guidance and Electronics Co Inc
Northrop GActive Patents
0
Total Holdings
120
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE2947863A1 | SELF-ALIGNING STRAP-DOWN HEADING AND POSITION REFERENCE SYS… | Expired / Lapsed | 1979-11-28 | — | 0 | Details |
| GB1198903A | Transformation and Registration of Photographic Images | Expired / Lapsed | 1968-01-08 | — | 0 | Details |
| US6282334B1 | Large scale WDM/TDM sensor array employing erbium-doped fib… | Expired / Lapsed | 1999-05-13 | 2001-08-28 | 58 | Details |
| US6266583B1 | System and method for improving the accuracy of pressure al… | Expired / Lapsed | 2000-03-30 | 2001-07-24 | 27 | Details |
| US6240113B1 | Microlaser-based electro-optic system and associated fabric… | Expired / Lapsed | 1999-07-30 | 2001-05-29 | 25 | Details |
| US5099486A | Frequency stabilized Ho:YAG laser | Expired / Lapsed | 1991-04-25 | 1992-03-24 | 11 | Details |
| US4995720A | Pulsed coherent Doppler laser radar | Expired / Lapsed | 1989-12-12 | 1991-02-26 | 14 | Details |
| US4848906A | Multiplexed fiber optic sensor | Expired / Lapsed | 1987-02-02 | 1989-07-18 | 8 | Details |
| US4825260A | Apparatus and method using amplification cells for ring las… | Expired / Lapsed | 1987-02-20 | 1989-04-25 | 52 | Details |
| USRE32849E | Method for fabricating multi-layer optical films | Expired / Lapsed | 1985-07-02 | 1989-01-31 | 13 | Details |
| US4740083A | Pathlength controller for ring laser gyroscope | Expired / Lapsed | 1984-10-02 | 1988-04-26 | 16 | Details |
| US4679894A | Electrically switched fiber optic directional coupler | Expired / Lapsed | 1984-08-20 | 1987-07-14 | 24 | Details |
| US4646096A | Enhanced global positioning system Delta-Range processing | Expired / Lapsed | 1984-10-05 | 1987-02-24 | 18 | Details |
| US4637255A | Non-planar ring laser accelerometer | Expired / Lapsed | 1985-12-30 | 1987-01-20 | 10 | Details |
| US4597667A | Dither controller for ring laser angular rotation sensor | Expired / Lapsed | 1982-12-09 | 1986-07-01 | 128 | Details |
| US4575722A | Magneto-optic display | Expired / Lapsed | 1982-05-05 | 1986-03-11 | 36 | Details |
| US4428642A | Body-carry electrical contact strips | Expired / Lapsed | 1982-01-11 | 1984-01-31 | 2 | Details |
| US4328576A | Wide band demodulator of phase modulated signals | Expired / Lapsed | 1980-03-10 | 1982-05-04 | 13 | Details |
| US4326769A | Rotary coaxial assembly | Expired / Lapsed | 1980-04-21 | 1982-04-27 | 2 | Details |
| US4166406A | Self-aligning pitch and azimuth reference unit | Expired / Lapsed | 1977-09-06 | 1979-09-04 | 17 | Details |
| US4142958A | Method for fabricating multi-layer optical films | Expired / Lapsed | 1978-04-13 | 1979-03-06 | 10 | Details |
| US4129780A | Active imaging system using time programmed dwell | Expired / Lapsed | 1977-06-21 | 1978-12-12 | 35 | Details |
| US4121578A | Physiological responsive control for an oxygen regulator | Expired / Lapsed | 1976-10-04 | 1978-10-24 | 3 | Details |
| US4112413A | Rate of change in altitude apparatus | Expired / Lapsed | 1976-09-27 | 1978-09-05 | 12 | Details |
| US4107701A | Acousto-optic snapshot recorder | Expired / Lapsed | 1976-09-16 | 1978-08-15 | 6 | Details |
| US4089581A | Printed circuit board connector | Expired / Lapsed | 1977-05-03 | 1978-05-16 | 16 | Details |
| US4025195A | Image subtraction/addition system | Expired / Lapsed | 1974-07-22 | 1977-05-24 | 5 | Details |
| US4022993A | Switch assembly having electrically illuminated character d… | Expired / Lapsed | 1975-06-09 | 1977-05-10 | 7 | Details |
| USD242930S | Membrane switch assembly font | Expired / Lapsed | 1975-11-12 | 1977-01-04 | 1 | Details |
| US3988717A | General purpose computer or logic chip and system | Expired / Lapsed | 1975-08-06 | 1976-10-26 | 17 | Details |
| US3987446A | Direction finding apparatus | Expired / Lapsed | 1972-10-27 | 1976-10-19 | 21 | Details |
| US3980386A | Electrical connector with molded pin protector | Expired / Lapsed | 1975-01-06 | 1976-09-14 | 6 | Details |
| US3976906A | Programmable character display module | Expired / Lapsed | 1975-06-09 | 1976-08-24 | 19 | Details |
| US3973685A | Photoelectric sensing apparatus for pallet storage systems | Expired / Lapsed | 1975-06-23 | 1976-08-10 | 6 | Details |
| US3962577A | Electro-optic system with expanded power range | Expired / Lapsed | 1975-01-10 | 1976-06-08 | 6 | Details |
| US3957337A | Miniature electrical connector having contact centering mea… | Expired / Lapsed | 1975-02-21 | 1976-05-18 | 10 | Details |
| US3934153A | Electro-optic system with expanded power range | Expired / Lapsed | 1975-01-10 | 1976-01-20 | 9 | Details |
| US3924232A | Optical warning system | Expired / Lapsed | 1974-08-26 | 1975-12-02 | 5 | Details |
| US3898392A | Answer-back assembly for a key telephone system | Expired / Lapsed | 1974-02-25 | 1975-08-05 | 2 | Details |
| US3849592A | Graphic data redundancy reduction for text and half-tone op… | Expired / Lapsed | 1973-02-05 | 1974-11-19 | 16 | Details |
| US3834775A | Ferrohydrodynamic low-friction bearing with improved volume… | Expired / Lapsed | 1972-05-26 | 1974-09-10 | 14 | Details |
| US3811011A | Multiple image registration system | Expired / Lapsed | 1969-07-08 | 1974-05-14 | 37 | Details |
| US3800411A | Method of forming a stable mnos igfet | Expired / Lapsed | 1972-05-22 | 1974-04-02 | 25 | Details |
| US3793511A | Digital motor control circuit | Expired / Lapsed | 1972-07-03 | 1974-02-19 | 11 | Details |
| US3788730A | Multielement window | Expired / Lapsed | 1972-03-29 | 1974-01-29 | 10 | Details |
| US3783433A | Solderless electrical connection system | Expired / Lapsed | 1971-01-18 | 1974-01-01 | 10 | Details |
| US3780252A | Microwave oven power supply circuit | Expired / Lapsed | 1972-07-20 | 1973-12-18 | 20 | Details |
| US3777201A | Light amplifier tube having an ion and low energy electron … | Expired / Lapsed | 1972-12-11 | 1973-12-04 | 7 | Details |
| US3747085A | Tool monitoring apparatus | Expired / Lapsed | 1971-11-03 | 1973-07-17 | 14 | Details |
| US3742224A | Light amplifier device having an ion and low energy electro… | Expired / Lapsed | 1972-03-23 | 1973-06-26 | 31 | Details |
| US3732389A | Touch entry switch array | Expired / Lapsed | 1972-02-14 | 1973-05-08 | 7 | Details |
| US3716853A | Airborne radar detecting and recording system | Expired / Lapsed | 1969-11-13 | 1973-02-13 | 0 | Details |
| US3700902A | Optical information processing using variable electro-optic… | Expired / Lapsed | 1971-01-13 | 1972-10-24 | 2 | Details |
| US3681764A | Low power memory system | Expired / Lapsed | 1971-03-15 | 1972-08-01 | 11 | Details |
| US3658528A | Photochemical figuring of optical elements | Expired / Lapsed | 1969-09-22 | 1972-04-25 | 8 | Details |
| US3641563A | Correction circuit for converters | Expired / Lapsed | 1970-02-25 | 1972-02-08 | 14 | Details |
| US3633285A | Laser markmanship trainer | Expired / Lapsed | 1970-03-09 | 1972-01-11 | 10 | Details |
| US3628647A | Article combiner | Expired / Lapsed | 1969-11-12 | 1971-12-21 | 12 | Details |
| US3626206A | Circuit means for cyclically monitoring and indicating the … | Expired / Lapsed | 1970-09-16 | 1971-12-07 | 16 | Details |
| US3626284A | An apparatus for measuring changes in microwave frequencies… | Expired / Lapsed | 1969-08-07 | 1971-12-07 | 4 | Details |
| US3613451A | Mass flowmeter | Expired / Lapsed | 1969-10-24 | 1971-10-19 | 0 | Details |
| US3610932A | Frequency conversion of noncoherent radiation with a noncoh… | Expired / Lapsed | 1969-08-27 | 1971-10-05 | 11 | Details |
| US3597083A | Method and apparatus for detecting registration between mul… | Expired / Lapsed | 1969-04-16 | 1971-08-03 | 17 | Details |
| US3596335A | Method for making a mosaic of ultrasonic transducers adapte… | Expired / Lapsed | 1969-03-24 | 1971-08-03 | 3 | Details |
| US3587029A | Rf connector | Expired / Lapsed | 1969-12-04 | 1971-06-22 | 10 | Details |
| US3580150A | Panoramic camera with forward image motion compensation by … | Expired / Lapsed | 1968-04-15 | 1971-05-25 | 8 | Details |
| US3572119A | Fluid quantity indicating device | Expired / Lapsed | 1969-08-07 | 1971-03-23 | 0 | Details |
| US3566130A | By addition of a spatially invariant modulation to spatiall… | Expired / Lapsed | 1969-05-15 | 1971-02-23 | 32 | Details |
| US3528749A | Apparatus for measuring optical density | Expired / Lapsed | 1966-12-09 | 1970-09-15 | 0 | Details |
| US3528743A | Laser densitometer | Expired / Lapsed | 1964-06-29 | 1970-09-15 | 0 | Details |
| US3528741A | Apparatus for measuring velocity by the detection of scatte… | Expired / Lapsed | 1964-06-26 | 1970-09-15 | 0 | Details |
| US3527537A | Automatic correlating interferometer | Expired / Lapsed | 1968-02-09 | 1970-09-08 | 0 | Details |
| US3526223A | Space suit and membrane pump system therefor | Expired / Lapsed | 1965-09-20 | 1970-09-01 | 0 | Details |
| US3525810A | Microphone assembly for use in a stethoscope | Expired / Lapsed | 1966-12-05 | 1970-08-25 | 0 | Details |
| US3519347A | Automatic printer systems | Expired / Lapsed | 1968-01-26 | 1970-07-07 | 0 | Details |
| US3517206A | Apparatus and method for optical read-out of internal elect… | Expired / Lapsed | 1968-04-08 | 1970-06-23 | 0 | Details |
| US3515881A | Panning control circuit for electronic image motion stabili… | Expired / Lapsed | 1965-06-08 | 1970-06-02 | 0 | Details |
| US3495891A | Floating mark systems in a stereoscopic device | Expired / Lapsed | 1967-12-18 | 1970-02-17 | 0 | Details |
| US3450833A | Automatic focusing system for a flying-spot scanner | Expired / Lapsed | 1966-01-14 | 1969-06-17 | 0 | Details |
| US3435446A | Digital encoder | Expired / Lapsed | 1965-01-04 | 1969-03-25 | 0 | Details |
| US3429359A | Method and apparatus for blowing cores using microwave ener… | Expired / Lapsed | 1965-05-21 | 1969-02-25 | 0 | Details |
| US3427581A | Clear air turbulence detector | Expired / Lapsed | 1965-08-04 | 1969-02-11 | 0 | Details |
| US3393320A | Data pattern motion cancellation system using image amplifi… | Expired / Lapsed | 1964-08-07 | 1968-07-16 | 0 | Details |
| US3390620A | Data recording apparatus | Expired / Lapsed | 1964-04-15 | 1968-07-02 | 0 | Details |
| US3370980A | Method for orienting single crystal films on polycrystallin… | Expired / Lapsed | 1963-08-19 | 1968-02-27 | 2 | Details |
| US3369445A | Optical alignment ascertaining device and process for elimi… | Expired / Lapsed | 1963-09-09 | 1968-02-20 | 2 | Details |
| US3356936A | Method and means for total battery voltage testing | Expired / Lapsed | 1964-02-12 | 1967-12-05 | 2 | Details |
| US3336211A | Reduction of oxides by ion bombardment | Expired / Lapsed | 1963-04-30 | 1967-08-15 | 1 | Details |
| US3330191A | Character printer | Expired / Lapsed | 1965-03-25 | 1967-07-11 | 2 | Details |
| US3323120A | Optical vernier for analog-to-digital converters | Expired / Lapsed | 1963-10-11 | 1967-05-30 | 2 | Details |
| US3320114A | Method for lowering index of refraction of glass surfaces | Expired / Lapsed | 1963-07-31 | 1967-05-16 | 3 | Details |
| US3303374A | Cathode ray tube including face plate comprising tapered fi… | Expired / Lapsed | 1965-03-15 | 1967-02-07 | 2 | Details |
| US3293629A | Planar media magnetic code identification system | Expired / Lapsed | 1965-04-02 | 1966-12-20 | 2 | Details |
| US3289148A | Connectors | Expired / Lapsed | 1964-07-29 | 1966-11-29 | 2 | Details |
| US3258525A | High speed video display apparatus | Expired / Lapsed | 1961-05-25 | 1966-06-28 | 1 | Details |
| US3251261A | Stellar aberrascope | Expired / Lapsed | 1960-05-02 | 1966-05-17 | 2 | Details |
| US3237039A | Cathode ray tube using fiber optics faceplate | Expired / Lapsed | 1961-04-17 | 1966-02-22 | 2 | Details |
| US3233137A | Method and apparatus for cleansing by ionic bombardment | Expired / Lapsed | 1961-08-28 | 1966-02-01 | 4 | Details |
| US3230864A | Microwave cooking | Expired / Lapsed | 1961-05-15 | 1966-01-25 | 2 | Details |
| US3222677A | Lobe switching directional antenna with directional coupler… | Expired / Lapsed | 1960-01-04 | 1965-12-07 | 2 | Details |
| US3219749A | Multilayer printed circuit board with solder access apertur… | Expired / Lapsed | 1961-04-21 | 1965-11-23 | 2 | Details |
| US3174037A | Method and apparatus for measuring the concentration of a g… | Expired / Lapsed | 1962-05-28 | 1965-03-16 | 2 | Details |
| US3173248A | Ionization and plasma acceleration apparatus | Expired / Lapsed | 1960-11-07 | 1965-03-16 | 1 | Details |
| US3167267A | Tape recorder | Expired / Lapsed | 1961-10-24 | 1965-01-26 | 2 | Details |
| US3165045A | Data processing system | Expired / Lapsed | 1962-04-05 | 1965-01-12 | 2 | Details |
| US3160879A | Object locating system | Expired / Lapsed | 1961-07-17 | 1964-12-08 | 2 | Details |
| US3153230A | Terrain clearance system | Expired / Lapsed | 1959-06-02 | 1964-10-13 | 2 | Details |
| US3152321A | High frequency transducing apparatus | Expired / Lapsed | 1961-04-12 | 1964-10-06 | 2 | Details |
| US3137841A | Transducer using spin resonant material | Expired / Lapsed | 1963-07-02 | 1964-06-16 | 2 | Details |
| US3137003A | Microwave process and apparatus | Expired / Lapsed | 1960-12-05 | 1964-06-09 | 2 | Details |
| US3133439A | Precisional navigational orientation | Expired / Lapsed | 1960-02-26 | 1964-05-19 | 1 | Details |
| US3112481A | Continuous wave frequency modulation distance measuring app… | Expired / Lapsed | 1957-12-20 | 1963-11-26 | 2 | Details |
| US3098225A | Measuring process | Expired / Lapsed | 1961-06-20 | 1963-07-16 | 2 | Details |
| US3079765A | Cooling garment | Expired / Lapsed | 1961-09-26 | 1963-03-05 | 1 | Details |
| US3071008A | Acceleration measuring system | Expired / Lapsed | 1959-08-20 | 1963-01-01 | 1 | Details |
| US3056958A | Measuring system | Expired / Lapsed | 1960-08-04 | 1962-10-02 | 0 | Details |
| US3034643A | Data processing for edge coded cards | Expired / Lapsed | 1959-08-13 | 1962-05-15 | 0 | Details |
| US3009146A | Longe range navigation system | Expired / Lapsed | 1958-02-06 | 1961-11-14 | 0 | Details |
| US2980806A | Corrected diode | Expired / Lapsed | 1957-04-22 | 1961-04-18 | 0 | Details |
| US2967267A | Reactive intercoupling of modular units | Expired / Lapsed | 1958-03-26 | 1961-01-03 | 0 | Details |