Inventor · disambiguated record
Hisao Okada
Also filed as: OKADA HISAO · SUZUKI SHOICHI
80 granted patents·3 pending applications·1,385 citations·filing 1974–2018
99Inventor score
Top patents by PatentIndex Score
83 records- 0193US6509895B2Voltage generating circuit, and common electrode drive circuit, signal line drive circuit and gray-scale voltage generating circuit for display devicesSHARP KK·Filed 2001·Granted Jan 21, 2003·50 cites·6 claims
- 0292US4251812ARemote control systemSONY CORP·Filed 1978·Granted Feb 17, 1981·27 cites·10 claims
- 0389US5923933AElectrophotographic apparatusHITACHI KOKI KK·Filed 1998·Granted Jul 13, 1999·49 cites·14 claims
- 0489US4206249AProcess for producing a paper container having high impermeability to liquidNIHON DIXIE CO LTD·Filed 1979·Granted Jun 3, 1980·48 cites·4 claims
- 0587US5929847AVoltage generating circuit, and common electrode drive circuit, signal line drive circuit and gray-scale voltage generating circuit for display devicesSHARP KK·Filed 1994·Granted Jul 27, 1999·68 cites·16 claims
- 0686US4115607AProcess of coating aluminum materials molded by extrusion with polysiloxane coatingYOSHIDA KOGYO KK·Filed 1977·Granted Sep 19, 1978·25 cites·11 claims
- 0785US6345163B1Developing device for image forming apparatusHITACHI KOKI KK·Filed 2000·Granted Feb 5, 2002·25 cites·6 claims
- 0885US4085371AAutomatically tuned memory television channel selecting apparatusSONY CORP·Filed 1976·Granted Apr 18, 1978·15 cites·12 claims
- 0985US3944982ARemote control system for electric apparatusSONY CORP·Filed 1974·Granted Mar 16, 1976·31 cites·10 claims
- 1081US4127822ADigitally controlled tuner with automatic fine tuningSONY CORP·Filed 1976·Granted Nov 28, 1978·12 cites·7 claims
- 1180US5537129ACommon electrode driving circuit for use in a display apparatusSHARP KK·Filed 1993·Granted Jul 16, 1996·54 cites·4 claims
- 1280US4280139AMuting circuit for a television receiverSONY CORP·Filed 1979·Granted Jul 21, 1981·24 cites·4 claims
- 1378US7702259B2Multi-pass image forming apparatus and image forming method using the same for providing plural print modes with different numbers of passes depending on desired print speed and image qualitySAMSUNG ELECTRONICS CO LTD·Filed 2006·Granted Apr 20, 2010·6 cites·14 claims
- 1478US6813462B2Electro-photographic developing unitHITACHI PRINTING SOLUTIONS LTD·Filed 2003·Granted Nov 2, 2004·17 cites·19 claims
- 1575US6172663B1Driver circuitSHARP KK·Filed 1996·Granted Jan 9, 2001·52 cites·11 claims
- 1675US5548375AIntegrated printing system for automated and maintenance free operationHITACHI LTD·Filed 1995·Granted Aug 20, 1996·19 cites·8 claims
- 1774US7574164B2Developing device and electrophotographic apparatus using the sameRICOH KK·Filed 2005·Granted Aug 11, 2009·4 cites·19 claims
- 1874US6310616B1Voltage generating circuit, and common electrode drive circuit signal line drive circuit and gray-scale voltage generating circuit for display deviceSHARP KK·Filed 1999·Granted Oct 30, 2001·34 cites·30 claims
- 1973US6797932B2Charge amount detection circuit and two-dimensional image sensor using sameSHARP KK·Filed 2001·Granted Sep 28, 2004·11 cites·13 claims
- 2073US6118421AMethod and circuit for driving liquid crystal panelSHARP KK·Filed 1996·Granted Sep 12, 2000·41 cites·19 claims
- 2172US5621439AVoltage compensation circuit and display apparatusSHARP KK·Filed 1994·Granted Apr 15, 1997·36 cites·16 claims
- 2272US3949403ARemote power control apparatusSONY CORP·Filed 1975·Granted Apr 6, 1976·19 cites·5 claims
- 2371US5402142ADrive circuit for display apparatusSHARP KK·Filed 1992·Granted Mar 28, 1995·35 cites·9 claims
- 2471US4665282ATablet type coordinate input apparatus using elastic waveHITACHI LTD·Filed 1985·Granted May 12, 1987·47 cites·20 claims
- 2570US4130804AChannel selecting apparatus with linearized tuningSONY CORP·Filed 1976·Granted Dec 19, 1978·8 cites·12 claims
- 2669US6433765B1Liquid crystal displaySHARP KK·Filed 2000·Granted Aug 13, 2002·11 cites·8 claims
- 2769US4127821AChannel selecting apparatus with automatic rewriting of channel identifying codes in a memorySONY CORP·Filed 1977·Granted Nov 28, 1978·8 cites·11 claims
- 2869US4085372AChannel selecting apparatus for a television receiver with an electronic tunerSONY CORP·Filed 1976·Granted Apr 18, 1978·14 cites·9 claims
- 2968US4518993ATelevision signal receiving systemSONY CORP·Filed 1981·Granted May 21, 1985·19 cites·20 claims
- 3068US4322855ARemote control apparatusSONY CORP·Filed 1980·Granted Mar 30, 1982·21 cites·11 claims
- 3167US5561442AMethod and circuit for driving a display deviceSHARP KK·Filed 1995·Granted Oct 1, 1996·33 cites·5 claims
- 3266US6480691B2Developing roll, developing device using the same and electrophotographic apparatusHITACHI KOKI KK·Filed 2001·Granted Nov 12, 2002·9 cites·3 claims
- 3366US5673061ADriving circuit for display apparatusSHARP KK·Filed 1996·Granted Sep 30, 1997·32 cites·16 claims
- 3466US5621426ADisplay apparatus and driving circuit for driving the sameSHARP KK·Filed 1995·Granted Apr 15, 1997·31 cites·12 claims
- 3565US6288697B1Method and circuit for driving display deviceSHARP KK·Filed 1997·Granted Sep 11, 2001·35 cites·10 claims
- 3664US6556229B2Electrophotographic apparatus having a fringe development preventing mechanismHITACHI KOKI KK·Filed 2001·Granted Apr 29, 2003·9 cites·6 claims
- 3764US5521611ADriving circuit for a display apparatusSHARP KK·Filed 1993·Granted May 28, 1996·26 cites·10 claims
- 3863US6297813B1Driving circuit for display deviceSHARP KK·Filed 1997·Granted Oct 2, 2001·29 cites·25 claims
- 3961US4000470ARadio receiverSANYO ELECTRIC CO·Filed 1975·Granted Dec 28, 1976·6 cites·21 claims
- 4059US7090956B2Image forming method and image forming apparatusRICOH PRINTING SYS LTD·Filed 2001·Granted Aug 15, 2006·7 cites·10 claims
- 4157US6815658B2Testing circuit for charge detection circuit, LSI, image sensor, and testing method for the charge detection circuitSHARP KK·Filed 2002·Granted Nov 9, 2004·2 cites·12 claims
- 4257US6061534ATwo-color image forming apparatus that prevents fringe developmentHITACHI KOKI KK·Filed 1998·Granted May 9, 2000·12 cites·9 claims
- 4357US5884119ALight exposure controlling method of electrophotographic apparatus for suppressing fringe in pictureHITACHI LTD·Filed 1997·Granted Mar 16, 1999·12 cites·6 claims
- 4457US5784041ADriving circuit for display deviceSHARP KK·Filed 1997·Granted Jul 21, 1998·23 cites·7 claims
- 4557US4079420AChannel selecting apparatusSONY CORP·Filed 1976·Granted Mar 14, 1978·5 cites·17 claims
- 4656US4217552AReceiverSONY CORP·Filed 1978·Granted Aug 12, 1980·5 cites·11 claims
- 4755US5608421ADrive circuit for a display apparatusSHARP KK·Filed 1995·Granted Mar 4, 1997·14 cites·2 claims
- 4855US5132794AHorizontal synchronizing signal separation circuit for a display apparatusSHARP KK·Filed 1991·Granted Jul 21, 1992·15 cites·6 claims
- 4954US5686933ADrive circuit for a display apparatusSHARP KK·Filed 1994·Granted Nov 11, 1997·14 cites·7 claims
- 5054US5440323ADrive circuit for a display apparatus having signal voltage circuits selectively controlled by selection signalSHARP KK·Filed 1991·Granted Aug 8, 1995·12 cites·14 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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