Northrop Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B64C AEROPLANES; HELICOPTERS 668
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 5100
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 5200
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES4105
 
  
 
B01D SEPARATION 2132
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 266
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 2118
 
  
 
F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 247
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS297
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 276

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8728424 Method and apparatus for carbon dioxide sequestrationNov 10, 10May 20, 14[B01D]
7347918 Energy efficient evaporation systemMay 11, 06Mar 25, 08[B01D]
5596332 Aircraft location and identification systemMay 22, 96Jan 21, 97[G01S]
5550434 Boost-mode energization and modulation circuit for an arc lampMay 23, 94Aug 27, 96[H05B]
5538201 Supersonic natural laminar flow wingDec 14, 93Jul 23, 96[B64C]
5538202 Hydraulic actuation system for aircraft control surfacesNov 02, 93Jul 23, 96[B64C]
5512902 Stock locator system using GPS translatorApr 18, 94Apr 30, 96[H04B, G01S]
5497253 Multi-layer opto-electronic neural networkJul 30, 93Mar 05, 96[G02B, G03H]
5471326 Holographic laser scanner and rangefinderApr 30, 93Nov 28, 95[G02B]
5465142 Obstacle avoidance system for helicopters and other aircraftApr 30, 93Nov 07, 95[G08B, G02B, G01C, G01B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5680336 Continuous wave synthesis from a finite periodic waveformExpiredApr 19, 94Oct 21, 97[G06F]
5542357 Linear turbine propulsion systemExpiredMar 18, 94Aug 06, 96[B61C]
5529645 Thin wall casting and processExpiredMay 17, 94Jun 25, 96[C22F]
5530451 Repeater with low spurious time outputsExpiredApr 12, 94Jun 25, 96[G01S]
5523579 Infrared line source projectorExpiredApr 19, 94Jun 04, 96[G01J]
5506675 Laser target designator tester for measuring static and dynamic errorExpiredMar 11, 94Apr 09, 96[G01J, F41G, G01C, G01B]
5506702 Holographic optical element providing an artificial star for an optical systemExpiredApr 07, 94Apr 09, 96[G02B, G01C]
5474631 Tension bonding processExpiredMay 09, 94Dec 12, 95[B64C, B32B]
5432457 Capacitive disk probeExpiredJan 28, 94Jul 11, 95[G01R]
5429772 Polythioether-spherical filler compositionsExpiredNov 19, 93Jul 04, 95[C23C, C08G]
5430755 Pressure-equalized self-compensating discharge configuration for triangular ring laser gyroscopesExpiredMay 24, 91Jul 04, 95[G01B]
5430858 Method for RAM conservation employing a RAM disk area non-sequential addresses on arranged order basis to access executable proceduresExpiredNov 24, 93Jul 04, 95[G06F]
5427328 Laser beam rider guidance utilizing beam quadrature detectionExpiredFeb 12, 85Jun 27, 95[F41G]
5406876 Store retention and release systemExpiredJun 21, 94Apr 18, 95[F41F, B64D]
D356990 AircraftExpiredOct 15, 93Apr 04, 95[]
5402720 Booster-missile self-aligning adapterExpiredNov 05, 91Apr 04, 95[F42B]
5402806 Cleaning apparatus having a partitioned boil sumpExpiredOct 19, 93Apr 04, 95[B08B]
5399221 Continuous process for forming fiber-reinforced high temperature thermoplastic resin honeycomb structuresExpiredMay 04, 90Mar 21, 95[B32B]
5399855 Atmospheric exclusion system having an expandable shroud and a non-elastic bladderExpiredDec 16, 93Mar 21, 95[H01J]
5396203 Demountable wire cage waveguide for permittivity measurements of dielectric materialsExpiredMar 17, 93Mar 07, 95[H01P, G01R]

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