Assignee
HEWLETT PACKARD CORP
US·65 granted patents·4,074 citations·filing 1991–1997
Top patents by PatentIndex Score
65 records- 0198US5414245AThermal-ink heater array using rectifying materialHEWLETT PACKARD CORP·Filed 1992·Granted May 9, 1995·171 cites·16 claims
- 0297US5455576AApparatus and methods for Lempel Ziv data compression with improved management of multiple dictionaries in content addressable memoryHEWLETT PACKARD CORP·Filed 1994·Granted Oct 3, 1995·197 cites·23 claims
- 0397US5412308ADual voltage power supplyHEWLETT PACKARD CORP·Filed 1994·Granted May 2, 1995·246 cites·13 claims
- 0497US5363134AIntegrated circuit printhead for an ink jet printer including an integrated identification circuitHEWLETT PACKARD CORP·Filed 1992·Granted Nov 8, 1994·315 cites·17 claims
- 0596US5476540AGel-forming inks for use in the alleviation of bleedHEWLETT PACKARD CORP·Filed 1994·Granted Dec 19, 1995·116 cites·20 claims
- 0696US5428383AMethod and apparatus for preventing color bleed in a multi-ink printing systemHEWLETT PACKARD CORP·Filed 1992·Granted Jun 27, 1995·145 cites·14 claims
- 0795US5426458APoly-p-xylylene films as an orifice plate coatingHEWLETT PACKARD CORP·Filed 1993·Granted Jun 20, 1995·92 cites·16 claims
- 0895US5409134APressure-sensitive accumulator for ink-jet pensHEWLETT PACKARD CORP·Filed 1991·Granted Apr 25, 1995·194 cites·40 claims
- 0995US5373290AApparatus and method for managing multiple dictionaries in content addressable memory based data compressionHEWLETT PACKARD CORP·Filed 1992·Granted Dec 13, 1994·200 cites·20 claims
- 1094US5485090AMethod and apparatus for differentiating battery typesHEWLETT PACKARD CORP·Filed 1993·Granted Jan 16, 1996·293 cites·12 claims
- 1193US5441593AFabrication of ink fill slots in thermal ink-jet printheads utilizing chemical micromachiningHEWLETT PACKARD CORP·Filed 1994·Granted Aug 15, 1995·78 cites·7 claims
- 1292US6076105ADistributed resource and project managementHEWLETT PACKARD CORP·Filed 1997·Granted Jun 13, 2000·124 cites·18 claims
- 1392US5416434AAdaptive clock generation with pseudo random variationHEWLETT PACKARD CORP·Filed 1993·Granted May 16, 1995·95 cites·4 claims
- 1491US5469858AECG P-QRS-T onset/offset annotation method and apparatusHEWLETT PACKARD CORP·Filed 1994·Granted Nov 28, 1995·97 cites·21 claims
- 1591US5446678ATransmission of information over an alphanumeric paging networkHEWLETT PACKARD CORP·Filed 1992·Granted Aug 29, 1995·193 cites·16 claims
- 1691US5428355APosition encoder systemHEWLETT PACKARD CORP·Filed 1992·Granted Jun 27, 1995·76 cites·36 claims
- 1789US5442318AGain enhancement technique for operational amplifiersHEWLETT PACKARD CORP·Filed 1993·Granted Aug 15, 1995·59 cites·18 claims
- 1888US5446404ACMOS power-on reset circuitHEWLETT PACKARD CORP·Filed 1994·Granted Aug 29, 1995·48 cites·8 claims
- 1987US5443713AThin-film structure method of fabricationHEWLETT PACKARD CORP·Filed 1994·Granted Aug 22, 1995·60 cites·22 claims
- 2087US5369310ACMOS power-on reset circuitHEWLETT PACKARD CORP·Filed 1992·Granted Nov 29, 1994·45 cites·11 claims
- 2185US5434606AOrifice plate for an ink-jet penHEWLETT PACKARD CORP·Filed 1991·Granted Jul 18, 1995·49 cites·19 claims
- 2281US5485526AMemory circuit for lossless data compression/decompression dictionary storageHEWLETT PACKARD CORP·Filed 1994·Granted Jan 16, 1996·74 cites·10 claims
- 2381US5473351AMethod and apparatus for regulating print density in an ink-jet printerHEWLETT PACKARD CORP·Filed 1994·Granted Dec 5, 1995·45 cites·18 claims
- 2481US5342440ABlack-to-color bleed control in thermal ink-jet printingHEWLETT PACKARD CORP·Filed 1992·Granted Aug 30, 1994·40 cites·15 claims
- 2580US5342439ABleed resistance of dyes by counter-ion substitutionHEWLETT PACKARD CORP·Filed 1993·Granted Aug 30, 1994·38 cites·19 claims
- 2679USD355171SPortable computerHEWLETT PACKARD CORP·Filed 1993·Granted Feb 7, 1995·19 cites·1 claims
- 2778US5332321ATwo line contact bushing mounting of a plotter carriage with pre-loadHEWLETT PACKARD CORP·Filed 1993·Granted Jul 26, 1994·37 cites·9 claims
- 2877US5481228AMethod and apparatus for controlling oscillator duty cycleHEWLETT PACKARD CORP·Filed 1993·Granted Jan 2, 1996·28 cites·20 claims
- 2975US5402148AMulti-resolution video apparatus and method for displaying biological dataHEWLETT PACKARD CORP·Filed 1992·Granted Mar 28, 1995·51 cites·22 claims
- 3071USD365336SPortable computerHEWLETT PACKARD CORP·Filed 1994·Granted Dec 19, 1995·14 cites·1 claims
- 3171US5369428ABidirectional ink jet printingHEWLETT PACKARD CORP·Filed 1992·Granted Nov 29, 1994·27 cites·11 claims
- 3270US5477255AInk cartridge system with improved volumetric capacity and method for using the sameHEWLETT PACKARD CORP·Filed 1993·Granted Dec 19, 1995·30 cites·25 claims
- 3370US5355892AMethod and apparatus for controlling a medical device with a macro instructionHEWLETT PACKARD CORP·Filed 1993·Granted Oct 18, 1994·33 cites·7 claims
- 3469US5574832ADouble axis dot depletion for 600 DPI edge acuity with 300 DPI print cartridgeHEWLETT PACKARD CORP·Filed 1993·Granted Nov 12, 1996·47 cites·11 claims
- 3565USD364606SPortable computerHEWLETT PACKARD CORP·Filed 1994·Granted Nov 28, 1995·11 cites·1 claims
- 3665US5444469APrinting method and apparatus for registering dotsHEWLETT PACKARD CORP·Filed 1992·Granted Aug 22, 1995·17 cites·12 claims
- 3765US5381803AQRS detector for defibrillator/monitorHEWLETT PACKARD CORP·Filed 1993·Granted Jan 17, 1995·103 cites·5 claims
- 3865US5341160AValve for ink-jet penHEWLETT PACKARD CORP·Filed 1991·Granted Aug 23, 1994·20 cites·24 claims
- 3964US6243577B1Frequency translation to local multi-point distribution system for personal communications servicesHEWLETT PACKARD CORP·Filed 1997·Granted Jun 5, 2001·52 cites·9 claims
- 4064US5414420ASwitch interconnect for position encoder systemHEWLETT PACKARD CORP·Filed 1992·Granted May 9, 1995·18 cites·12 claims
- 4164US5395394ADefibrillator with a high voltage solid state relayHEWLETT PACKARD CORP·Filed 1993·Granted Mar 7, 1995·15 cites·5 claims
- 4264US5384544AMethod and apparatus for calibrating the energy output of a defibrillatorHEWLETT PACKARD CORP·Filed 1993·Granted Jan 24, 1995·27 cites·8 claims
- 4362US5469076AStatic current testing apparatus and method for current steering logic (CSL)HEWLETT PACKARD CORP·Filed 1993·Granted Nov 21, 1995·15 cites·23 claims
- 4459USRE35026ESelf-aligning thermal print head and paper loading mechanismHEWLETT PACKARD CORP·Filed 1994·Granted Aug 22, 1995·13 cites·2 claims
- 4556US5436578ACMOS output pad driver with variable drive currents ESD protection and improved leakage current behaviorHEWLETT PACKARD CORP·Filed 1993·Granted Jul 25, 1995·17 cites·9 claims
- 4656US5423325AMethods for enhancement of HRV and late potentials measurementsHEWLETT PACKARD CORP·Filed 1993·Granted Jun 13, 1995·56 cites·15 claims
- 4756US5388326ASelf aligning orifice construction for thermal ink-jet printheadsHEWLETT PACKARD CORP·Filed 1993·Granted Feb 14, 1995·17 cites·6 claims
- 4855US5359307AHigh voltage relayHEWLETT PACKARD CORP·Filed 1993·Granted Oct 25, 1994·12 cites·14 claims
- 4954US5425843AProcess for semiconductor device etch damage reduction using hydrogen-containing plasmaHEWLETT PACKARD CORP·Filed 1993·Granted Jun 20, 1995·29 cites·20 claims
- 5054US5406955AECG recorder and playback unitHEWLETT PACKARD CORP·Filed 1993·Granted Apr 18, 1995·52 cites·33 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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