Inventor · disambiguated record
Hiroshi Ogawa
Also filed as: AOKI SHIGETA · AONUMA MASASHI · KISHI HIROTOSHI · NAKAMURA MATSUAKI
456 granted patents·58 pending applications·8,238 citations·filing 1973–2025
99Inventor score
Top patents by PatentIndex Score
514 records- 0198US5886985AOptical recording medium having a plurality of sectors separated by sync signalsSONY CORP·Filed 1997·Granted Mar 23, 1999·150 cites·20 claims
- 0298US4967403AMulti-format optical disk and reading deviceSONY CORP·Filed 1987·Granted Oct 30, 1990·108 cites·6 claims
- 0397US11668401B2Dual gate valveSMC CORP·Filed 2021·Granted Jun 6, 2023·5 cites·11 claims
- 0497US7181919B2System utilizing waste heat of internal combustion engineNIPPON SOKEN·Filed 2005·Granted Feb 27, 2007·26 cites·23 claims
- 0597US5674058AScroll-type refrigerant compressorNIPPON DENSO CO·Filed 1996·Granted Oct 7, 1997·115 cites·9 claims
- 0696US6728174B1Recording medium and reproducing method and apparatus for recording mediumSONY CORP·Filed 2000·Granted Apr 27, 2004·72 cites·31 claims
- 0796US5734957AImage forming apparatus with toner re-use featureCANON KK·Filed 1994·Granted Mar 31, 1998·74 cites·29 claims
- 0896US4963433AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1989·Granted Oct 16, 1990·72 cites·8 claims
- 0996US4863793AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Sep 5, 1989·71 cites·8 claims
- 1096US4716530ASystem for automatically controlling movement of unmanned vehicle and method thereforMEIDENSHA ELECTRIC MFG CO LTD·Filed 1985·Granted Dec 29, 1987·191 cites·18 claims
- 1196US4501000AMethod of coding binary dataSONY CORP·Filed 1981·Granted Feb 19, 1985·72 cites·13 claims
- 1295US11844246B1Display deviceJAPAN DISPLAY INC·Filed 2023·Granted Dec 12, 2023·2 cites·30 claims
- 1395US7735335B2Fluid pump having expansion device and rankine cycle using the sameDENSO CORP·Filed 2006·Granted Jun 15, 2010·37 cites·6 claims
- 1495US7279970B2Feedback circuitFLYING MOLE CORP·Filed 2005·Granted Oct 9, 2007·39 cites·1 claims
- 1595US6234769B1Hybrid type compressor driven by engine and electric motorDENSO CORP·Filed 1998·Granted May 22, 2001·99 cites·2 claims
- 1695US6185312B1Method for embedding and reading watermark-information in digital form, and apparatus thereofNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Feb 6, 2001·384 cites·75 claims
- 1795US5878024AOptical disc, apparatus and method for recording and reproducing dataSONY CORP·Filed 1997·Granted Mar 2, 1999·82 cites·19 claims
- 1895US5836582ASheet feeding device with air injectors for separating sheetsCANON KK·Filed 1997·Granted Nov 17, 1998·74 cites·14 claims
- 1995US4588280AImage forming apparatus and process unit detachably mountable theretoCANON KK·Filed 1983·Granted May 13, 1986·52 cites·21 claims
- 2095US4338683AVideodisc player with constant turntable velocitySONY CORP·Filed 1980·Granted Jul 6, 1982·53 cites·1 claims
- 2195US4063000AProcess for production of ferromagnetic powderFUJI PHOTO FILM CO LTD·Filed 1975·Granted Dec 13, 1977·49 cites·14 claims
- 2294US8800956B2Non-sliding gate valveSMC CORP·Filed 2012·Granted Aug 12, 2014·18 cites·13 claims
- 2394US6443712B2Hybrid type compressor driven by engine and electric motorDENSO CORP·Filed 2001·Granted Sep 3, 2002·54 cites·3 claims
- 2494US6075761AOptical recording medium having pits that are formed with respect to a wobbled groove at substantially constant positions in each cycle of the groove having a pitSONY CORP·Filed 1997·Granted Jun 13, 2000·65 cites·33 claims
- 2594US5835461AOptical disc, apparatus and method for recording and reproducing dataSONY CORP·Filed 1997·Granted Nov 10, 1998·65 cites·6 claims
- 2694US5342876ASpherical granules of porous silica or silicate, process for the production thereof, and applications thereofMISUZAWA IND CHEMICALS LTD·Filed 1993·Granted Aug 30, 1994·114 cites·21 claims
- 2794US5139760AAmorphous silica-alumina spherical particles and process for preparation thereofMIZUSAWA INDUSTRIAL CHEM·Filed 1990·Granted Aug 18, 1992·78 cites·7 claims
- 2894US5060221ADigital data recording/reproduction apparatusSONY CORP·Filed 1989·Granted Oct 22, 1991·59 cites·9 claims
- 2994US4851289AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Jul 25, 1989·57 cites·14 claims
- 3094US4780067AMulticylinder rotary compressorMITSUBISHI ELECTRIC CORP·Filed 1987·Granted Oct 25, 1988·65 cites·14 claims
- 3194US4257115ASwitch structure for electronic timepieceCITIZEN WATCH CO LTD·Filed 1978·Granted Mar 17, 1981·72 cites·2 claims
- 3293US12433097B2Method of manufacturing display deviceMAGNOLIA WHITE CORP·Filed 2023·Granted Sep 30, 2025·1 cites·19 claims
- 3393US7418824B2Refrigerating apparatus and fluid machine thereforDENSO CORP·Filed 2005·Granted Sep 2, 2008·21 cites·10 claims
- 3493US6282166B1Optical recording medium with wobbled grooves and interconnecting pitsSONY CORP·Filed 2000·Granted Aug 28, 2001·29 cites·4 claims
- 3592US6704431B1Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Mar 9, 2004·106 cites·32 claims
- 3692US5835478AOptical disc having address information for recording and reproducing data at correct positionsSONY CORP·Filed 1996·Granted Nov 10, 1998·55 cites·13 claims
- 3792US5185732ARecording medium and recording and reproducing apparatus employing the recording mediumSONY CORP·Filed 1989·Granted Feb 9, 1993·44 cites·20 claims
- 3892US4907215AIntegral optical recording of product code in data areasSONY CORP·Filed 1987·Granted Mar 6, 1990·50 cites·7 claims
- 3992USD275747SVehicle tireBRIDGESTONE TIRE CO LTD·Filed 1982·Granted Oct 2, 1984·31 cites·1 claims
- 4092US4460267ARemovable developing device with shutterCANON KK·Filed 1983·Granted Jul 17, 1984·38 cites·7 claims
- 4192US4124296AOriginal urging deviceCANON KK·Filed 1977·Granted Nov 7, 1978·26 cites·5 claims
- 4292US3977243ATesting machine for tires on imitation roadsBRIDGESTONE TIRE CO LTD·Filed 1975·Granted Aug 31, 1976·63 cites·14 claims
- 4391US7072492B2Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Jul 4, 2006·48 cites·8 claims
- 4491US6730435B1Active material for non-aqueous secondary battery, and non-aqueous secondary battery using the sameSUMITOMO CHEMICAL CO·Filed 2000·Granted May 4, 2004·46 cites·10 claims
- 4591US5399076ARolling piston compressorNIPPON DENSO CO·Filed 1993·Granted Mar 21, 1995·59 cites·24 claims
- 4691US5188520AScroll type compressor with frames supporting the crankshaftMITSUBISHI ELECTRIC CORP·Filed 1991·Granted Feb 23, 1993·46 cites·2 claims
- 4791US4620300ADigital signal detecting and compensating circuit with adjustable window signalSONY CORP·Filed 1985·Granted Oct 28, 1986·38 cites·17 claims
- 4890US6731578B1Optical disk recording and/or reproducing device, and focusing servomechanismSONY CORP·Filed 2000·Granted May 4, 2004·29 cites·26 claims
- 4990US6677041B1Platy potassium titanate, process for producing the same, and friction materialOTSUKA CHEMICAL CO LTD·Filed 2000·Granted Jan 13, 2004·41 cites·32 claims
- 5090US5067556AController of refrigerating plantMITSUBISHI HEAVY IND LTD·Filed 1990·Granted Nov 26, 1991·85 cites·2 claims
Showing the top 50 of 514 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →