Inventor · disambiguated record
Hironobu Shiroyama
Also filed as: SHIROYAMA HIRONOBU
8 granted patents·69 citations·filing 2001–2023
83Inventor score
Files withFUJI ELECTRIC CO LTD5FUJI ELEC DEVICE TECH CO LTD1FUJI ELECTRIC SYSTEMS CO LTD1MATSUO HIROFUMI1
Top patents by PatentIndex Score
8 records- 0188US11233448B2Switching control circuit and switching control methodFUJI ELECTRIC CO LTD·Filed 2021·Granted Jan 25, 2022·2 cites·19 claims
- 0283US9537417B2Power supply control circuit and power source cut-off detection methodFUJI ELECTRIC CO LTD·Filed 2013·Granted Jan 3, 2017·7 cites·11 claims
- 0381US6657877B2Power supply circuitFUJI ELECTRIC CO LTD·Filed 2001·Granted Dec 2, 2003·45 cites·18 claims
- 0478US7859864B2Switching power supply deviceFUJI ELECTRIC SYSTEMS CO LTD·Filed 2008·Granted Dec 28, 2010·10 cites·9 claims
- 0562US12062976B2Power supply circuit and power supply deviceFUJI ELECTRIC CO LTD·Filed 2022·Granted Aug 13, 2024·0 cites·7 claims
- 0659US12438473B2Control circuit and power factor correction circuitFUJI ELECTRIC CO LTD·Filed 2023·Granted Oct 7, 2025·0 cites·10 claims
- 0759US8902550B2Direct-current switchMATSUO HIROFUMI·Filed 2011·Granted Dec 2, 2014·2 cites·3 claims
- 0850US7751209B2Switching power supply equipmentFUJI ELEC DEVICE TECH CO LTD·Filed 2007·Granted Jul 6, 2010·3 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →