North American Philips Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 13229
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 4107
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 391
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 3359
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 270
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS297
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 2445
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 2136
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 2126
 
  
 
H03K PULSE TECHNIQUE 2129

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5862399 Write control unitSep 17, 96Jan 19, 99[G06F]
5766991 CMOS process utilizing disposable silicon nitride spacers for making lightly doped drainAug 29, 96Jun 16, 98[H01L]
5751038 Electrically erasable and programmable read only memory (EEPROM) having multiple overlapping metallization layersNov 26, 96May 12, 98[H01L, G11C]
5646804 Thin film magnetic head having polymer on broken flux guide sections, method of producing and integrated structure incorporating sameDec 20, 91Jul 08, 97[G11B]
5570044 BiCMOS output driver with reduced static power consumptionSep 19, 94Oct 29, 96[H03K]
5568202 System for echo cancellation comprising an improved ghost cancellation reference signalSep 22, 92Oct 22, 96[H04N]
5561468 Multiplexed modulation system for robust audio digital televisionFeb 28, 95Oct 01, 96[H04N]
5525863 Hid lamp having an arc tube with offset press sealsJan 17, 95Jun 11, 96[H01J]
5512849 Low power intelligent current source for monitoring a high voltageSep 19, 94Apr 30, 96[H03K]
5508738 Single panel color porjection video display having control circuitry for synchronizing the color illumination system with reading/writing of the lightMar 09, 95Apr 16, 96[H04N]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6728581 Differential budding: method and apparatus for path planning with moving obstacles and goalsExpiredApr 11, 90Apr 27, 04[G05B]
6337544 Digital lamp signal processorExpiredDec 14, 99Jan 08, 02[G05F]
6241819 Method of manufacturing quantum sized doped semiconductor particlesExpiredApr 20, 93Jun 05, 01[C30B]
6235546 Method of forming an active matrix electro-optic display device with storage capacitorsExpiredOct 14, 94May 22, 01[H01L]
6089742 Method and apparatus for controlling robots and the like using a bubble data hierarchy placed along a medial axisExpiredNov 01, 89Jul 18, 00[G06F]
5995336 Composite structure with single domain magnetic element, and thin film magnetic head incorporating sameExpiredAug 31, 93Nov 30, 99[G11B]
5929463 Active matrix electro-optic display device with storage capacitors and projection color apparatus employing sameExpiredJan 11, 94Jul 27, 99[H01L]
5905610 Combined read/write magnetic head having MRE positioned between broken flux guide and non-magnetic substrateExpiredJun 25, 93May 18, 99[G11B]
5879590 Low conductivity, doped KTIOPO.sub.4 and devices based thereonExpiredJul 13, 90Mar 09, 99[G02B, G02F, G30B]
5686798 Lamp ballast circuit characterized by a single resonant frequency substantially greater than the fundamental frequency of the inverter output signalExpiredJun 05, 95Nov 11, 97[H05B]
5663879 Method and apparatus for smooth control of a vehicle with automatic recovery for interferenceExpiredOct 26, 92Sep 02, 97[G06F, G06G]
5633951 Registration of volumetric images which are relatively elastically deformed by matching surfacesExpiredJun 07, 95May 27, 97[G06T]
5624874 Barrier layer enhancement in metallization scheme for semiconductor device fabricationExpiredOct 18, 95Apr 29, 97[H01L]
5585694 Low pressure discharge lamp having sintered "cold cathode" discharge electrodesExpiredAug 10, 92Dec 17, 96[H01J]
5577130 Method and apparatus for determining the distance between an image and an objectExpiredAug 05, 91Nov 19, 96[G06K]
5574706 Focus offset optimization for reading optically recorded dataExpiredJun 28, 94Nov 12, 96[G11B]
5562480 Electrical connecting deviceExpiredOct 25, 94Oct 08, 96[H01R]
5547274 Modulated light source with a linear transfer functionExpiredMar 14, 90Aug 20, 96[G02B]
5546544 Arbiter with a direct signal path that is modifiable under priority-conflict controlExpiredNov 21, 94Aug 13, 96[G06F]
5532763 Single panel color projection video displayExpiredFeb 10, 95Jul 02, 96[H04N]

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