Inventor · disambiguated record
Koji Sonobe
Also filed as: SONOBE KOJI
14 granted patents·58 citations·filing 2007–2020
89Inventor score
Top patents by PatentIndex Score
14 records- 0180US7982248B2Junction field effect transistor, integrated circuit for switching power supply, and switching power supplyFUJI ELECTRIC SYSTEMS CO LTD·Filed 2007·Granted Jul 19, 2011·7 cites·4 claims
- 0278US8243473B2Switching power supply device and switching power supply control circuitCHEN JIAN·Filed 2009·Granted Aug 14, 2012·15 cites·13 claims
- 0378US7859860B2Switching power source device, switching power source control circuit, and switching power source device control methodFUJI ELECTRIC SYSTEMS CO LTD·Filed 2009·Granted Dec 28, 2010·9 cites·11 claims
- 0473US8283705B2Junction field effect transistor, integrated circuit for switching power supply, and switching power supplySAITO MASARU·Filed 2011·Granted Oct 9, 2012·3 cites·11 claims
- 0572US10277134B2Switching power supply deviceFUJI ELECTRIC CO LTD·Filed 2016·Granted Apr 30, 2019·2 cites·20 claims
- 0671US7948780B2Semiconductor device for switching power supply control, startup circuit, and startup method for switching power supply deviceFUJI ELECTRIC SYSTEMS CO LTD·Filed 2009·Granted May 24, 2011·10 cites·10 claims
- 0764US9627977B2Quasi-resonant switching power supplyFUJI ELECTRIC CO LTD·Filed 2013·Granted Apr 18, 2017·2 cites·12 claims
- 0859US8411469B2Switching power source device and switching power source control circuitCHEN JIAN·Filed 2009·Granted Apr 2, 2013·5 cites·11 claims
- 0957US8879281B2Switching power source deviceFUJI ELECTRIC CO LTD·Filed 2013·Granted Nov 4, 2014·1 cites·4 claims
- 1050US9461115B2Junction field effect transistor, integrated circuit for switching power supply, and switching power supplySAITO MASARU·Filed 2012·Granted Oct 4, 2016·0 cites·17 claims
- 1150US8098501B2Switching power supply control circuitSONOBE KOJI·Filed 2009·Granted Jan 17, 2012·4 cites·6 claims
- 1244US11411498B2Controller of switching power supply apparatusFUJI ELECTRIC CO LTD·Filed 2020·Granted Aug 9, 2022·0 cites·7 claims
- 1342US10512137B2LED drive circuitFUJI ELECTRIC CO LTD·Filed 2013·Granted Dec 17, 2019·0 cites·3 claims
- 1437US11005373B2Switching power supply control circuit with bottom point detectionFUJI ELECTRIC CO LTD·Filed 2018·Granted May 11, 2021·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →