Inventor · disambiguated record
Katsumi Ishikawa
Also filed as: ISHIKAWA KATSUMI · KAWAI MASAYASU
53 granted patents·17 pending applications·624 citations·filing 1977–2025
98Inventor score
Top patents by PatentIndex Score
70 records- 0196US7570085B2Gate driver circuit for switching deviceHITACHI LTD·Filed 2007·Granted Aug 4, 2009·37 cites·12 claims
- 0295US7547966B2Power semiconductor moduleHITACHI LTD·Filed 2007·Granted Jun 16, 2009·47 cites·21 claims
- 0393US7737761B2Gate drive circuit with reduced switching loss and noiseHITACHI LTD·Filed 2008·Granted Jun 15, 2010·29 cites·4 claims
- 0491US8395422B2Drive circuit for switching deviceOGAWA KAZUTOSHI·Filed 2010·Granted Mar 12, 2013·19 cites·9 claims
- 0591US7671465B2Power semiconductor moduleHITACHI LTD·Filed 2007·Granted Mar 2, 2010·24 cites·16 claims
- 0691US7285854B2Wire bonding method and semiconductor deviceDENSO CORP·Filed 2005·Granted Oct 23, 2007·27 cites·5 claims
- 0791US6676158B2Airbag and folding method thereofNIHON PLAST CO LTD·Filed 2001·Granted Jan 13, 2004·58 cites·27 claims
- 0890US8508258B2Driver circuit for switching deviceISHIKAWA KATSUMI·Filed 2007·Granted Aug 13, 2013·22 cites·4 claims
- 0990US8471622B2Drive circuit of semiconductor deviceISHIKAWA KATSUMI·Filed 2010·Granted Jun 25, 2013·13 cites·4 claims
- 1086US8928363B2Semiconductor drive circuit and power conversion apparatus using sameHATANAKA AYUMU·Filed 2011·Granted Jan 6, 2015·10 cites·8 claims
- 1186US7405478B2Substrate package structure and packaging method thereofDENSO CORP·Filed 2005·Granted Jul 29, 2008·20 cites·5 claims
- 1285US8441075B2Power semiconductor apparatus having a silicon power semiconductor device and a wide gap semiconductor deviceISHIKAWA KATSUMI·Filed 2010·Granted May 14, 2013·7 cites·15 claims
- 1384US7483250B2Drive circuit for switching deviceHITACHI LTD·Filed 2006·Granted Jan 27, 2009·10 cites·2 claims
- 1484US7352184B2MRI apparatus with high-resistance magnetHITACHI LTD·Filed 2006·Granted Apr 1, 2008·10 cites·9 claims
- 1584US6724313B2Fault detection systemHITACHI LTD·Filed 2002·Granted Apr 20, 2004·31 cites·1 claims
- 1683US7746614B2Drive circuit for switching deviceHITACHI LTD·Filed 2009·Granted Jun 29, 2010·9 cites·3 claims
- 1781US7880174B2Circuit arrangement having a free-wheel diodeHITACHI LTD·Filed 2008·Granted Feb 1, 2011·10 cites·8 claims
- 1880US7783396B2Hybrid cruising control systemHITACHI LTD·Filed 2008·Granted Aug 24, 2010·13 cites·5 claims
- 1980US6892564B2Fall impact apparatusUNIDEN KK·Filed 2003·Granted May 17, 2005·18 cites·4 claims
- 2079US8619448B2Power converter and motor driving device using the sameOGAWA KAZUTOSHI·Filed 2011·Granted Dec 31, 2013·6 cites·12 claims
- 2179US7631892B2Airbag, airbag folding method, and airbag deviceNIHON PLAST CO LTD·Filed 2005·Granted Dec 15, 2009·14 cites·5 claims
- 2279US4092693ATemperature sensing protection circuit for ic power chip having thermal hysteresis characteristicPIONEER ELECTRONIC CORP·Filed 1977·Granted May 30, 1978·17 cites·6 claims
- 2377US7830109B2Method of setting the origin of a linear motorWAKO GIKEN CO LTD·Filed 2008·Granted Nov 9, 2010·9 cites·61 claims
- 2476US8952642B2Power conversion device and temperature rise calculation method thereofAYANO HIDEKI·Filed 2011·Granted Feb 10, 2015·7 cites·16 claims
- 2575US7126802B2Drive circuit for switching deviceHITACHI LTD·Filed 2004·Granted Oct 24, 2006·13 cites·3 claims
- 2675US6759964B2Fault detection systemHITACHI LTD·Filed 2002·Granted Jul 6, 2004·17 cites·6 claims
- 2774US2025280254A1Live data distribution method, live data distribution system, and live data distribution apparatusYAMAHA CORP·Filed 2025·Application pending·0 cites
- 2873US9171831B2Power semiconductor with a Si chip and a wideband chip having matched loss and area ratiosHITACHI LTD·Filed 2014·Granted Oct 27, 2015·2 cites·1 claims
- 2972US11279635B2Method of using an agricultural electrolyzed water-generating apparatus for generation of agricultural electrolyzed water useful for plant growthNIHON TRIM CO LTD·Filed 2020·Granted Mar 22, 2022·1 cites·11 claims
- 3072US7295412B2Protection circuit for power management semiconductor devices and power converter having the protection circuitHITACHI LTD·Filed 2004·Granted Nov 13, 2007·13 cites·13 claims
- 3171US8860170B2Power semiconductor with a Si chip and a wideband chip having matched loss and area ratiosHITACHI LTD·Filed 2013·Granted Oct 14, 2014·2 cites·1 claims
- 3269US7994826B2Drive circuit for power semiconductor switching deviceHITACHI LTD·Filed 2007·Granted Aug 9, 2011·6 cites·8 claims
- 3369US5883403APower semiconductor deviceHITACHI LTD·Filed 1996·Granted Mar 16, 1999·29 cites·18 claims
- 3468US2025182736A1Live data distribution method, live data distribution system, and live data distribution apparatusYAMAHA CORP·Filed 2025·Application pending·0 cites
- 3565US10885806B2Musical score processing method and musical score processing systemYAMAHA CORP·Filed 2019·Granted Jan 5, 2021·0 cites·6 claims
- 3665US7675727B2Protection circuit for power management semiconductor devices and power converter having the protection circuitHITACHI LTD·Filed 2007·Granted Mar 9, 2010·5 cites·13 claims
- 3765US2025014554A1Method for outputting data, data output device and electronic musical instrumentYAMAHA CORP·Filed 2024·Application pending·0 cites
- 3864US7806991B2Low loss magnet and magnetic circuit using the sameHITACHI LTD·Filed 2006·Granted Oct 5, 2010·3 cites·19 claims
- 3963US12288546B2Live data distribution method, live data distribution system, and live data distribution apparatusYAMAHA CORP·Filed 2022·Granted Apr 29, 2025·0 cites·20 claims
- 4063US7046155B2Fault detection systemHITACHI LTD·Filed 2004·Granted May 16, 2006·8 cites·3 claims
- 4163US4212197AStrain gage load converterKYOWA ELECTRONIC INSTRUMENTS·Filed 1979·Granted Jul 15, 1980·14 cites·3 claims
- 4262US10204617B2Voice synthesis method and voice synthesis deviceYAMAHA CORP·Filed 2016·Granted Feb 12, 2019·1 cites·15 claims
- 4361US7336118B2Inverter apparatusHITACHI LTD·Filed 2005·Granted Feb 26, 2008·3 cites·11 claims
- 4461US2023014315A1Trained model establishment method, estimation method, performance agent recommendation method, performance agent adjustment method, trained model establishment system, estimation system, trained model establishment program, and estimation programYAMAHA CORP·Filed 2022·Application pending·0 cites
- 4560US12342151B2Live data distribution method, live data distribution system, and live data distribution apparatusYAMAHA CORP·Filed 2022·Granted Jun 24, 2025·0 cites·17 claims
- 4659US2025240595A1Sound processing method, sound processing device, and sound processing programYAMAHA CORP·Filed 2025·Application pending·0 cites
- 4757US8860213B2Power converterHITACHI LTD·Filed 2013·Granted Oct 14, 2014·1 cites·6 claims
- 4857US7786631B2Linear motorWAKO GIKEN CO LTD·Filed 2008·Granted Aug 31, 2010·2 cites·20 claims
- 4957US7696650B2Driving circuit for switching elementsHITACHI LTD·Filed 2008·Granted Apr 13, 2010·2 cites·2 claims
- 5057US2025133361A1Method of Processing Sound, Sound Processing Apparatus, and Non-Transitory Computer-Readable Storage MediumYAMAHA CORP·Filed 2024·Application pending·0 cites
Showing the top 50 of 70 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →