Northrop Grumman Space and Mission Systems Corp
Northrop GActive Patents
0
Total Holdings
121
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB587287A | Shock absorbers | Expired / Lapsed | 1944-09-06 | — | 0 | Details |
| US5774064A | Remote control system for door locks | Expired / Lapsed | 1996-11-18 | 1998-06-30 | 8 | Details |
| US4669815A | Integrated optical waveguide multiplexer/demultiplexer | Expired / Lapsed | 1985-08-12 | 1987-06-02 | 4 | Details |
| US4523468A | Phased array inspection of cylindrical objects | Expired / Lapsed | 1983-10-03 | 1985-06-18 | 18 | Details |
| US4050035A | Self-aligned polarized laser | Expired / Lapsed | 1976-02-13 | 1977-09-20 | 5 | Details |
| US4012120A | Guided wave acousto-optic device | Expired / Lapsed | 1975-05-14 | 1977-03-15 | 11 | Details |
| US4011542A | Redundant data transmission system | Expired / Lapsed | 1974-10-10 | 1977-03-08 | 11 | Details |
| US3952301A | Digital adaptive speed control for vehicles | Expired / Lapsed | 1974-02-11 | 1976-04-20 | 5 | Details |
| US3949359A | Digital speed control | Expired / Lapsed | 1973-04-09 | 1976-04-06 | 12 | Details |
| US3934461A | Multiple exposure holographic interferometer method | Expired / Lapsed | 1974-09-16 | 1976-01-27 | 13 | Details |
| US3922533A | Method of locating a radiating target | Expired / Lapsed | 1975-01-28 | 1975-11-25 | 21 | Details |
| US3921669A | Integral power steering gear and sintered metal valve sleev… | Expired / Lapsed | 1974-05-10 | 1975-11-25 | 11 | Details |
| US3896702A | Power steering gear with relief valve on power piston | Expired / Lapsed | 1973-07-27 | 1975-07-29 | 6 | Details |
| US3891046A | Digital speed control | Expired / Lapsed | 1972-02-03 | 1975-06-24 | 9 | Details |
| US3886555A | Radiating target direction finding system | Expired / Lapsed | 1973-06-04 | 1975-05-27 | 27 | Details |
| US3849010A | Dual seat socket joint | Expired / Lapsed | 1973-05-02 | 1974-11-19 | 12 | Details |
| US3832072A | Clamp assembly | Expired / Lapsed | 1973-04-23 | 1974-08-27 | 14 | Details |
| US3812496A | Optical signal recording system | Expired / Lapsed | 1972-08-22 | 1974-05-21 | 8 | Details |
| US3787775A | Phase correction circuit | Expired / Lapsed | 1973-03-28 | 1974-01-22 | 8 | Details |
| US3779457A | Data normalizing method and system | Expired / Lapsed | 1971-06-28 | 1973-12-18 | 23 | Details |
| US3776092A | Fastener | Expired / Lapsed | 1971-12-16 | 1973-12-04 | 9 | Details |
| US3773081A | Power steering gear assembly | Expired / Lapsed | 1971-09-20 | 1973-11-20 | 3 | Details |
| US3737249A | High flow pump impeller for low net positive suction head a… | Expired / Lapsed | 1970-08-26 | 1973-06-05 | 3 | Details |
| US3728006A | Holographic schlieren method | Expired / Lapsed | 1971-10-20 | 1973-04-17 | 11 | Details |
| US3678797A | Fastener | Expired / Lapsed | 1970-07-02 | 1972-07-25 | 9 | Details |
| US3672776A | Holographic real-time interferometry with a reconstructed r… | Expired / Lapsed | 1970-10-09 | 1972-06-27 | 0 | Details |
| US3637994A | Active electrical card device | Expired / Lapsed | 1970-10-19 | 1972-01-25 | 6 | Details |
| US3565528A | Contour mapper data presentation storage device | Expired / Lapsed | 1967-10-25 | 1971-02-23 | 0 | Details |
| US3547542A | High scanning speed spectrometer | Expired / Lapsed | 1968-03-01 | 1970-12-15 | 0 | Details |
| US3532891A | Means for stabilization of transverse pockels' cells | Expired / Lapsed | 1967-12-26 | 1970-10-06 | 0 | Details |
| US3527533A | Method and apparatus for deriving and processing topographi… | Expired / Lapsed | 1964-08-25 | 1970-09-08 | 0 | Details |
| US3500375A | Digital overspeed detector | Expired / Lapsed | 1967-02-21 | 1970-03-10 | 0 | Details |
| US3393366A | High precision motor speed control circuit utilizing binary… | Expired / Lapsed | 1964-06-05 | 1968-07-16 | 0 | Details |
| US3378837A | Precision tracking system | Expired / Lapsed | 1963-10-14 | 1968-04-16 | 2 | Details |
| US3378687A | Scanning system which optically locks on object and mechani… | Expired / Lapsed | 1963-06-25 | 1968-04-16 | 1 | Details |
| US3329900A | Phase-stable receiver employing a phase-modulated injected … | Expired / Lapsed | 1963-11-05 | 1967-07-04 | 1 | Details |
| US3327322A | Artificial heart powered by a fluid pressure pump means sim… | Expired / Lapsed | 1964-07-27 | 1967-06-27 | 2 | Details |
| US3320485A | Dielectric isolation for monolithic circuit | Expired / Lapsed | 1964-03-30 | 1967-05-16 | 0 | Details |
| US3320594A | Associative computer | Expired / Lapsed | 1964-03-10 | 1967-05-16 | 1 | Details |
| US3308380A | Phase-stable receiver | Expired / Lapsed | 1962-11-13 | 1967-03-07 | 2 | Details |
| US3290677A | Continuous wave angle and range determining radar | Expired / Lapsed | 1962-12-31 | 1966-12-06 | 1 | Details |
| US3246303A | Stored logic computer | Expired / Lapsed | 1961-09-11 | 1966-04-12 | 2 | Details |
| US3246331A | Direction finder antenna apparatus | Expired / Lapsed | 1958-08-20 | 1966-04-12 | 2 | Details |
| US3242345A | Lightweight electrical generator set employing a mercury po… | Expired / Lapsed | 1961-11-09 | 1966-03-22 | 2 | Details |
| US3241038A | Portable static inverter with reduced harmonic content in t… | Expired / Lapsed | 1960-02-02 | 1966-03-15 | 1 | Details |
| US3228344A | Centrifugal impeller and method of making same | Expired / Lapsed | 1963-08-30 | 1966-01-11 | 2 | Details |
| US3226713A | Precision tracking system | Expired / Lapsed | 1963-10-31 | 1965-12-28 | 2 | Details |
| US3219910A | Silicon controlled rectifier circuit | Expired / Lapsed | 1960-10-31 | 1965-11-23 | 2 | Details |
| US3199037A | Phase-locked loops | Expired / Lapsed | 1962-09-25 | 1965-08-03 | 2 | Details |
| US3199106A | Time distortion tolerant signalling system | Expired / Lapsed | 1962-04-02 | 1965-08-03 | 4 | Details |
| US3165671A | Polyphase control device | Expired / Lapsed | 1960-08-10 | 1965-01-12 | 2 | Details |
| US3146408A | Millivolt controlled oscillator | Expired / Lapsed | 1960-02-24 | 1964-08-25 | 1 | Details |
| US3134896A | Electrical signal analyzing systems | Expired / Lapsed | 1960-05-27 | 1964-05-26 | 2 | Details |
| US3134100A | Doppler difference collision warning system | Expired / Lapsed | 1959-07-29 | 1964-05-19 | 4 | Details |
| US3129323A | Fail-safe process control system | Expired / Lapsed | 1958-03-26 | 1964-04-14 | 2 | Details |
| US3109974A | Machine tool control system having feedrate control | Expired / Lapsed | 1961-06-19 | 1963-11-05 | 2 | Details |
| US3105230A | Compensating circuits | Expired / Lapsed | 1958-09-24 | 1963-09-24 | 2 | Details |
| US3103009A | Signal detection system | Expired / Lapsed | 1958-08-04 | 1963-09-03 | 1 | Details |
| US3096475A | Electrical apparatus | Expired / Lapsed | 1958-05-16 | 1963-07-02 | 2 | Details |
| US3081822A | Rotary regenerator drum fabrication | Expired / Lapsed | 1960-04-14 | 1963-03-19 | 1 | Details |
| US3080487A | Timing signal generator | Expired / Lapsed | 1959-07-06 | 1963-03-05 | 2 | Details |
| US3079079A | Process and control apparatus for improving operating effic… | Expired / Lapsed | 1958-05-21 | 1963-02-26 | 2 | Details |
| US3070304A | Arithmetic unit for digital control systems | Expired / Lapsed | 1957-04-12 | 1962-12-25 | 0 | Details |
| US3068474A | Radio direction finding system | Expired / Lapsed | 1958-12-04 | 1962-12-11 | 0 | Details |
| US3054064A | D.-c. output frequency discriminators using lag lead phase … | Expired / Lapsed | 1958-02-12 | 1962-09-11 | 0 | Details |
| US3048165A | Pump for an artificial heart | Expired / Lapsed | 1959-04-17 | 1962-08-07 | 0 | Details |
| US3045231A | Signal analyzing method and system | Expired / Lapsed | 1958-04-17 | 1962-07-17 | 0 | Details |
| US3043965A | Amplifier circuit having degenerative and regenerative feed… | Expired / Lapsed | 1957-10-14 | 1962-07-10 | 0 | Details |
| US3032029A | System controlling apparatus and method | Expired / Lapsed | 1958-07-09 | 1962-05-01 | 0 | Details |
| US3023371A | Precision variable frequency generator | Expired / Lapsed | 1958-03-07 | 1962-02-27 | 0 | Details |
| US3021450A | Ring counter | Expired / Lapsed | 1960-04-07 | 1962-02-13 | 0 | Details |
| US3015091A | Memory matrix control devices | Expired / Lapsed | 1958-03-03 | 1961-12-26 | 0 | Details |
| US3004786A | Ball joint | Expired / Lapsed | 1958-07-30 | 1961-10-17 | 0 | Details |
| US3003121A | Transistor oscillator control circuits | Expired / Lapsed | 1959-11-06 | 1961-10-03 | 0 | Details |
| US2998532A | Linear ramp voltage wave shape generator | Expired / Lapsed | 1958-05-21 | 1961-08-29 | 0 | Details |
| US2997669A | Broad band lobing switch | Expired / Lapsed | 1958-02-03 | 1961-08-22 | 0 | Details |
| US2992384A | Frequency counter | Expired / Lapsed | 1959-07-06 | 1961-07-11 | 0 | Details |
| US2991463A | Collision indication system | Expired / Lapsed | 1956-05-28 | 1961-07-04 | 0 | Details |
| US2978227A | Rotor construction for rotary regenerator | Expired / Lapsed | 1958-07-23 | 1961-04-04 | 0 | Details |
| US2974271A | Voltage regulator | Expired / Lapsed | 1957-07-08 | 1961-03-07 | 0 | Details |
| US2946288A | Pump | Expired / Lapsed | 1958-06-25 | 1960-07-26 | 0 | Details |
| US2940076A | Passive position determining system | Expired / Lapsed | 1957-02-15 | 1960-06-07 | 0 | Details |
| US2936715A | Seal assembly | Expired / Lapsed | 1955-11-14 | 1960-05-17 | 0 | Details |
| US2895756A | Self-positioning tie rod clamp and turnbuckle assembly | Expired / Lapsed | 1955-10-06 | 1959-07-21 | 0 | Details |
| US2880337A | Particle acceleration method and apparatus | Expired / Lapsed | 1958-01-02 | 1959-03-31 | 0 | Details |
| US2877448A | Superconductive logical circuits | Expired / Lapsed | 1957-11-08 | 1959-03-10 | 0 | Details |
| US2876705A | Pressure loaded gear pump | Expired / Lapsed | 1953-05-29 | 1959-03-10 | 0 | Details |
| US2849888A | Power steering apparatus | Expired / Lapsed | 1954-08-23 | 1958-09-02 | 0 | Details |
| US2825579A | Self-contained automatic leveling vehicle suspension | Expired / Lapsed | 1955-09-13 | 1958-03-04 | 0 | Details |
| US2795747A | Automatic speed and stabilizing control using variable tran… | Expired / Lapsed | 1952-07-16 | 1957-06-11 | 0 | Details |
| US2784379A | Switch for coaxial lines | Expired / Lapsed | 1952-10-02 | 1957-03-05 | 0 | Details |
| US2778344A | Pneumatic powered linear actuator | Expired / Lapsed | 1953-11-06 | 1957-01-22 | 0 | Details |
| US2761393A | Submerged booster pump assembly | Expired / Lapsed | 1950-05-19 | 1956-09-04 | 0 | Details |
| US2756626A | Apparatus for detecting particles in fluids | Expired / Lapsed | 1951-11-15 | 1956-07-31 | 2 | Details |
| US2755116A | Joint | Expired / Lapsed | 1952-11-19 | 1956-07-17 | 0 | Details |
| US2755184A | Method of making ni3al | Expired / Lapsed | 1952-05-06 | 1956-07-17 | 2 | Details |
| US2699917A | Turbine wheel and blade construction | Expired / Lapsed | 1946-08-24 | 1955-01-18 | 0 | Details |
| US2690409A | Binary coating of refractory metals | Expired / Lapsed | 1949-07-08 | 1954-09-28 | 2 | Details |
| US2688925A | Mixed flow multiple pump | Expired / Lapsed | 1950-09-27 | 1954-09-14 | 0 | Details |
| US2661019A | Automatic venting drum cap and valve assembly | Expired / Lapsed | 1950-04-27 | 1953-12-01 | 0 | Details |
| US2622024A | Method of controlling the density of sintered compacts | Expired / Lapsed | 1950-06-08 | 1952-12-16 | 0 | Details |
| US2603466A | Mounting for supplementary feed device for internal-combust… | Expired / Lapsed | 1948-10-27 | 1952-07-15 | 0 | Details |
| US2593943A | Methods of molding powders of metal character | Expired / Lapsed | 1949-03-01 | 1952-04-22 | 2 | Details |
| US2594009A | Inverted extrusion apparatus | Expired / Lapsed | 1947-07-15 | 1952-04-22 | 0 | Details |
| US2563138A | Pump regulator | Expired / Lapsed | 1946-08-21 | 1951-08-07 | 0 | Details |
| US2471936A | Method of making poppet valves | Expired / Lapsed | 1944-01-21 | 1949-05-31 | 0 | Details |
| US2403926A | Sheathed valve | Expired / Lapsed | 1942-01-24 | 1946-07-16 | 0 | Details |
| US2350398A | Joint construction | Expired / Lapsed | 1940-12-06 | 1944-06-06 | 0 | Details |
| US2333423A | Quick disconnect coupling | Expired / Lapsed | 1941-09-29 | 1943-11-02 | 0 | Details |
| US2328330A | Rubber bushed joint | Expired / Lapsed | 1941-12-04 | 1943-08-31 | 0 | Details |
| US2287608A | Joint assembly | Expired / Lapsed | 1940-05-10 | 1942-06-23 | 0 | Details |
| US2283440A | Resilient joint construction | Expired / Lapsed | 1940-12-04 | 1942-05-19 | 0 | Details |
| US2126389A | Ball joint | Expired / Lapsed | 1936-10-19 | 1938-08-09 | 0 | Details |
| US2093773A | Method of making hollow valves | Expired / Lapsed | 1931-05-16 | 1937-09-21 | 0 | Details |
| US2093771A | Method of making copper cooled valves | Expired / Lapsed | 1931-02-27 | 1937-09-21 | 0 | Details |
| US2054082A | Joint and process of making same | Expired / Lapsed | 1934-02-26 | 1936-09-15 | 0 | Details |
| US1985805A | Valve tip hardening machine | Expired / Lapsed | 1933-05-09 | 1934-12-25 | 0 | Details |
| US1980716A | Method of making inlaid metal valves | Expired / Lapsed | 1931-05-20 | 1934-11-13 | 0 | Details |
| US1881601A | Ball joint | Expired / Lapsed | 1929-06-05 | 1932-10-11 | 0 | Details |
| US1828891A | Tie-rod construction | Expired / Lapsed | 1926-02-26 | 1931-10-27 | 0 | Details |
| US1691562A | Apparatus for electrically heating metal parts | Expired / Lapsed | 1926-11-17 | 1928-11-13 | 0 | Details |