Inventor · disambiguated record
Takuya Ishigaki
Also filed as: ISHIGAKI TAKUYA
13 granted patents·2 pending applications·455 citations·filing 2005–2021
88Inventor score
Files withMITSUBISHI MATERIALS CORP4HITACHI LTD3HITACHI AUTOMOTIVE SYSTEMS LTD2HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD2RENESAS TECH CORP2
Top patents by PatentIndex Score
15 records- 0198US7385380B2Switching power supplyRENESAS TECH CORP·Filed 2007·Granted Jun 10, 2008·202 cites·10 claims
- 0298US7138786B2Power supply driver circuitRENESAS TECH CORP·Filed 2005·Granted Nov 21, 2006·227 cites·11 claims
- 0386US8120345B2Semiconductor device and power supply using the sameAKIYAMA NOBORU·Filed 2009·Granted Feb 21, 2012·23 cites·15 claims
- 0476US10541549B2Power supply apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2016·Granted Jan 21, 2020·3 cites·16 claims
- 0558US12162079B2Surface-coated cutting toolMITSUBISHI MATERIALS CORP·Filed 2019·Granted Dec 10, 2024·0 cites·5 claims
- 0656US12350742B2Surface-coated cutting toolMITSUBISHI MATERIALS CORP·Filed 2021·Granted Jul 8, 2025·0 cites·4 claims
- 0751US11040402B2Surface-coated cutting tool having hard coating layer exhibiting excellent chipping resistance and wear resistanceMITSUBISHI MATERIALS CORP·Filed 2018·Granted Jun 22, 2021·0 cites·5 claims
- 0850US11998992B2Surface coated cutting tool having hard coating layer exhibiting excellent chipping resistanceMITSUBISHI MATERIALS CORP·Filed 2019·Granted Jun 4, 2024·0 cites·4 claims
- 0948US9750125B2Power supply apparatusHITACHI LTD·Filed 2016·Granted Aug 29, 2017·0 cites·12 claims
- 1047US12113467B2Power conversion system and motor control method based on sameHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2020·Granted Oct 8, 2024·0 cites·7 claims
- 1144US11424685B2Resonance type power supply deviceHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2019·Granted Aug 23, 2022·0 cites·6 claims
- 1243US9806622B2Power conversion device and power conversion control method for the sameHITACHI LTD·Filed 2016·Granted Oct 31, 2017·0 cites·8 claims
- 1337US2010301823A1Power supply unit and control circuit of power supply unitRENESAS ELECTRONICS CORP·Filed 2010·Application pending·0 cites
- 1434US9887638B2Power conversion apparatus with frequency operation change based on input voltageHITACHI LTD·Filed 2016·Granted Feb 6, 2018·0 cites·10 claims
- 1528US2019273440A1Power ConverterHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →