Inventor · disambiguated record
Isao Nakagawa
Also filed as: KUROYANAGI TOMOMITSU · MIZUTANI KEIICHI · NAKAGAWA ISAO
44 granted patents·1 pending application·984 citations·filing 1975–2021
98Inventor score
Top patents by PatentIndex Score
45 records- 0194US9991574B2Onboard battery for vehicleFUJI HEAVY IND LTD·Filed 2016·Granted Jun 5, 2018·6 cites·7 claims
- 0294US7339895B2Gateway device and control method for communication with IP and IPV6 protocolsHITACHI LTD·Filed 2002·Granted Mar 4, 2008·117 cites·6 claims
- 0392US5218436AProcessing circuit for a plurality of different TV signalsHITACHI LTD·Filed 1991·Granted Jun 8, 1993·156 cites·17 claims
- 0491US9627721B2Electricity storage device and vehicleKOSAKI AKIHIRO·Filed 2011·Granted Apr 18, 2017·29 cites·6 claims
- 0585US5760820ADigital signal transmission system with priority information forcing display of text on a receiverHITACHI LTD·Filed 1996·Granted Jun 2, 1998·100 cites·4 claims
- 0680US6840448B2Portable information processing apparatusHITACHI LTD·Filed 2003·Granted Jan 11, 2005·30 cites·7 claims
- 0780US5249037AImage signal correction circuit and image signal processor using the circuitHITACHI LTD·Filed 1989·Granted Sep 28, 1993·41 cites·22 claims
- 0879US9672961B2Bus bar module accommodating part structureYAZAKI CORP·Filed 2013·Granted Jun 6, 2017·2 cites·2 claims
- 0979US4754322AYC-signal separation circuit responsive to magnitude of vertical correlationHITACHI LTD·Filed 1986·Granted Jun 28, 1988·36 cites·9 claims
- 1078US4860090ADigital signal processing circuit driven by a switched clock and used in television receiver for processing standard and nonstandard television signalsHITACHI LTD·Filed 1988·Granted Aug 22, 1989·35 cites·16 claims
- 1178US4733300AContour signal correction circuit for television receiverHITACHI LTD·Filed 1986·Granted Mar 22, 1988·36 cites·3 claims
- 1277US4739390ATelevision signal processing circuitHITACHI LTD·Filed 1986·Granted Apr 19, 1988·32 cites·8 claims
- 1376US4924305AMotion detecting circuit for video signal processing using correlation techniquesHITACHI LTD·Filed 1989·Granted May 8, 1990·34 cites·18 claims
- 1476US4853765ASequential scanning converter with frame comb filter and freeze frame featureHITACHI LTD·Filed 1988·Granted Aug 1, 1989·30 cites·5 claims
- 1574US4128848AAutomatic ghost-suppression systemHITACHI LTD·Filed 1976·Granted Dec 5, 1978·19 cites·10 claims
- 1673US10594177B2Rotary electric machine and rotor core manufacturing methodYASKAWA ELECTRIC CORP·Filed 2016·Granted Mar 17, 2020·2 cites·12 claims
- 1773US4794454AMovement detection circuit of a video signal used in a television receiverHITACHI LTD·Filed 1987·Granted Dec 27, 1988·28 cites·20 claims
- 1872US5353065AApparatus for receiving wide/standard picture plane television signalHITACHI LTD·Filed 1992·Granted Oct 4, 1994·34 cites·12 claims
- 1972US4733297AVideo signal processing circuit of motion adaptive typeHITACHI LTD·Filed 1987·Granted Mar 22, 1988·26 cites·15 claims
- 2071US8093191B2Engine lubricant for improved fuel economyFAHMY MOHAMED G·Filed 2006·Granted Jan 10, 2012·4 cites·20 claims
- 2169US6657666B1Method and apparatus for recording image informationHITACHI LTD·Filed 1999·Granted Dec 2, 2003·39 cites·10 claims
- 2265US4821112ADetection circuit for detecting standard television signals and nonstandard television signalsHITACHI LTD·Filed 1987·Granted Apr 11, 1989·20 cites·4 claims
- 2363US11912162B2Battery management system for electric vehicles and electric vehicleSUBARU CORP·Filed 2021·Granted Feb 27, 2024·0 cites·11 claims
- 2463US4707732ASeparating circuit of luminance and chrominance signals for TV receiver selecting between three three line comb filtersHITACHI LTD·Filed 1986·Granted Nov 17, 1987·19 cites·9 claims
- 2562US10008892B2IPM motor for vacuum pumpEDWARDS JAPAN LTD·Filed 2013·Granted Jun 26, 2018·1 cites·4 claims
- 2660US4205335ACircuit arrangement for separating chrominance and luminance information in a composite video signal of an NTSC systemHITACHI LTD·Filed 1978·Granted May 27, 1980·12 cites·2 claims
- 2759US9601743B2Electric wire routing structure for bus bar moduleYAZAKI CORP·Filed 2013·Granted Mar 21, 2017·2 cites·2 claims
- 2859US6810624B2Structure of molding part of a weather strip for use in a slide type rear doorNISHIKAWA RUBBER CO LTD·Filed 2002·Granted Nov 2, 2004·11 cites·9 claims
- 2957US4775888AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1988·Granted Oct 4, 1988·14 cites·24 claims
- 3056US10994631B2Vehicle power supply apparatusSUBARU CORP·Filed 2019·Granted May 4, 2021·0 cites·19 claims
- 3156US4736252AMotion detector for chrominance signal in TV receiverHITACHI LTD·Filed 1986·Granted Apr 5, 1988·14 cites·10 claims
- 3254US11565569B2Heater apparatusSUBARU CORP·Filed 2019·Granted Jan 31, 2023·0 cites·18 claims
- 3354US4405937AChrominance signal reproducing apparatusHITACHI LTD·Filed 1981·Granted Sep 20, 1983·11 cites·7 claims
- 3452US9614197B2Onboard batteryFUJI HEAVY IND LTD·Filed 2015·Granted Apr 4, 2017·0 cites·18 claims
- 3550US2016312826A1Protective bearing, bearing unit, and vacuum pumpEDWARDS JAPAN LTD·Filed 2014·Application pending·0 cites
- 3648US5016111ATelevision signal recording/reproducing apparatus of color-under recording typeHITACHI LTD·Filed 1988·Granted May 14, 1991·10 cites·7 claims
- 3744US12002937B2Vehicle and non-contact power feeding apparatusSUBARU CORP·Filed 2017·Granted Jun 4, 2024·0 cites·19 claims
- 3841US4634995AElectronic circuitry utilizing an inerted Darlington amplifier output stage to be operable with a low supply voltageHITACHI LTD·Filed 1983·Granted Jan 6, 1987·6 cites·4 claims
- 3941US4242602APhase comparator circuit with gated isolation circuitHITACHI LTD·Filed 1978·Granted Dec 30, 1980·5 cites·3 claims
- 4037US4904129AAnnular milling cutter for machining bevel gearNISSAN MOTOR·Filed 1989·Granted Feb 27, 1990·6 cites·1 claims
- 4137US4291335AVertical synchronizing signal detectorHITACHI LTD·Filed 1979·Granted Sep 22, 1981·3 cites·5 claims
- 4237US3988775AGhost signal suppressing device for television receiver setHITACHI LTD·Filed 1975·Granted Oct 26, 1976·3 cites·3 claims
- 4336US4456885AFilter circuit suitable for being fabricated into integrated circuitHITACHI LTD·Filed 1981·Granted Jun 26, 1984·4 cites·7 claims
- 4431US4607292AAutomatic phase control color signal circuit for video tape recorders operating in the NTSC or PAL systemsHITACHI LTD·Filed 1983·Granted Aug 19, 1986·3 cites·9 claims
- 4527US4788141AAutomatic analyzer for guanase activityMARUHO KK·Filed 1987·Granted Nov 29, 1988·4 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →