Inventor · disambiguated record
Kunio Seki
Also filed as: SEKI KUNIO
27 granted patents·5 pending applications·472 citations·filing 1973–2014
97Inventor score
Top patents by PatentIndex Score
32 records- 0192US6344721B2Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatusHITACHI LTD·Filed 2001·Granted Feb 5, 2002·47 cites·11 claims
- 0285US5384516AInformation processing apparatus including a control circuit for controlling a liquid crystal display illumination based on whether illuminatio power is being supplied from an AC power source or from a batteryHITACHI LTD·Filed 1992·Granted Jan 24, 1995·121 cites·19 claims
- 0384US6340873B2Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatusHITACHI LTD·Filed 2001·Granted Jan 22, 2002·27 cites·4 claims
- 0481US9573502B2Seat cushion deviceUD TRUCKS CORP·Filed 2012·Granted Feb 21, 2017·15 cites·20 claims
- 0581US6563286B2Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatusHITACHI LTD·Filed 2001·Granted May 13, 2003·23 cites·4 claims
- 0681US4321428AAcoustic monolithic power semiconductor integrated circuit and acoustic system using the sameHITACHI LTD·Filed 1979·Granted Mar 23, 1982·18 cites·6 claims
- 0777US5293077APower switching circuitHITACHI LTD·Filed 1992·Granted Mar 8, 1994·48 cites·47 claims
- 0870US4403240AIntegrated circuit with at least three ground padsHITACHI LTD·Filed 1980·Granted Sep 6, 1983·35 cites·15 claims
- 0969US4015215APush-pull power amplifier circuitHITACHI LTD·Filed 1975·Granted Mar 29, 1977·12 cites·22 claims
- 1068US5847521AMethod and apparatus for driving an electric motorHITACHI LTD·Filed 1996·Granted Dec 8, 1998·29 cites·5 claims
- 1163US8390222B2Brushless motor driving circuitSEKI KUNIO·Filed 2010·Granted Mar 5, 2013·3 cites·2 claims
- 1262US4414514ATwo signal amplifying systemHITACHI LTD·Filed 1981·Granted Nov 8, 1983·12 cites·8 claims
- 1362US4258406AProtecting circuitHITACHI LTD·Filed 1979·Granted Mar 24, 1981·13 cites·6 claims
- 1460US4017749ATransistor circuit including source voltage ripple removalHITACHI LTD·Filed 1976·Granted Apr 12, 1977·9 cites·16 claims
- 1558US9637891B2Management server for working machine and management method for working machineHITACHI CONSTRUCTION MACH CO·Filed 2014·Granted May 2, 2017·1 cites·9 claims
- 1658US4145666AMultistage amplifier circuitHITACHI LTD·Filed 1978·Granted Mar 20, 1979·8 cites·5 claims
- 1755US5621288AMotor speed regulating circuit with starter and storage medium drive using the sameHITACHI LTD·Filed 1994·Granted Apr 15, 1997·10 cites·17 claims
- 1852US3947637ASignal composing circuitHITACHI LTD·Filed 1974·Granted Mar 30, 1976·8 cites·10 claims
- 1948US4543539AAmplifierHITACHI LTD·Filed 1983·Granted Sep 24, 1985·7 cites·14 claims
- 2045US3988693AComplementary push-pull amplifier device with protective circuit meansHITACHI LTD·Filed 1975·Granted Oct 26, 1976·5 cites·11 claims
- 2142US5428281ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1993·Granted Jun 27, 1995·9 cites·11 claims
- 2241US4051443ADifferential amplifierHITACHI LTD·Filed 1976·Granted Sep 27, 1977·4 cites·9 claims
- 2337US9102257B2Cushion structure for vehicle seatSEKI KUNIO·Filed 2011·Granted Aug 11, 2015·0 cites·2 claims
- 2435US4503478ATransistor power amplifier circuitHITACHI LTD·Filed 1979·Granted Mar 5, 1985·3 cites·8 claims
- 2535US4323576ADerivatives of pyrazole for use in therapyMORISHITA PHARMA·Filed 1980·Granted Apr 6, 1982·1 cites·8 claims
- 2635US2002171388A1Apparatus for driving three-phase half-wave drive brushless motorFiled 2002·Application pending·0 cites
- 2735US2002185986A1Apparatus for driving brushless motorFiled 2002·Application pending·0 cites
- 2834US2002167290A1Apparatus for driving three-phase brushless motorFiled 2002·Application pending·0 cites
- 2931US2010237812A1Motor driving apparatusSEKI KUNIO·Filed 2010·Application pending·0 cites
- 3031US2010237813A1Brushless motor driving apparatusSEKI KUNIO·Filed 2010·Application pending·0 cites
- 3125US3942128AConstant-voltage circuitHITACHI LTD·Filed 1973·Granted Mar 2, 1976·2 cites·15 claims
- 3224US4336504APush-pull output circuitHITACHI LTD·Filed 1980·Granted Jun 22, 1982·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →