Inventor · disambiguated record
Kazutoshi Ogawa
Also filed as: OGAWA KAZUTOSHI
11 granted patents·2 pending applications·67 citations·filing 1986–2020
88Inventor score
Top patents by PatentIndex Score
13 records- 0191US8395422B2Drive circuit for switching deviceOGAWA KAZUTOSHI·Filed 2010·Granted Mar 12, 2013·19 cites·9 claims
- 0290US8471622B2Drive circuit of semiconductor deviceISHIKAWA KATSUMI·Filed 2010·Granted Jun 25, 2013·13 cites·4 claims
- 0385US8441075B2Power 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
- 0479US8619448B2Power converter and motor driving device using the sameOGAWA KAZUTOSHI·Filed 2011·Granted Dec 31, 2013·6 cites·12 claims
- 0576US8952642B2Power conversion device and temperature rise calculation method thereofAYANO HIDEKI·Filed 2011·Granted Feb 10, 2015·7 cites·16 claims
- 0673US9171831B2Power 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
- 0771US8860170B2Power 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
- 0847US11701971B2Three-phase AC motor drive device, rail vehicle equipped with same, and three-phase AC motor drive methodHITACHI LTD·Filed 2020·Granted Jul 18, 2023·0 cites·11 claims
- 0939US4819178AAutomatic circuit adjusting system and circuit adjusting tool thereforSONY CORP·Filed 1986·Granted Apr 4, 1989·11 cites·29 claims
- 1038US2014334214A1Inverter DeviceHITACHI LTD·Filed 2012·Application pending·0 cites
- 1137US8110944B2Switching circuit and power converterOGAWA KAZUTOSHI·Filed 2010·Granted Feb 7, 2012·0 cites·11 claims
- 1237US2015003133A1Drive Circuit of Semiconductor Switching Element and Power Conversion Circuit Using the SameHITACHI LTD·Filed 2013·Application pending·0 cites
- 1333US8829838B2Power converterAYANO HIDEKI·Filed 2010·Granted Sep 9, 2014·0 cites·20 claims
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