Inventor · disambiguated record
Seiki Igarashi
Also filed as: IGARASHI SEIKI
14 granted patents·5 pending applications·464 citations·filing 1991–2024
94Inventor score
Top patents by PatentIndex Score
19 records- 0191US7433212B2System linking apparatus for generated electric powerFUJI ELEC DEVICE TECH CO LTD·Filed 2005·Granted Oct 7, 2008·42 cites·8 claims
- 0282US6061253AVariable frequency soft switching power supply with reduced noise and improved power factorFUJI ELECTRICAL CO LTD·Filed 1998·Granted May 9, 2000·68 cites·17 claims
- 0379US6459597B1Electric power conversion apparatus with noise reduction deviceFUJI ELECTRIC CO LTD·Filed 2001·Granted Oct 1, 2002·42 cites·11 claims
- 0478US6288595B1On-delay-compensating arm on-detection circuitFUJI ELECTRIC CO LTD·Filed 2000·Granted Sep 11, 2001·37 cites·1 claims
- 0576US5616955APower transistor module wiring structureFUJI ELECTRIC CO LTD·Filed 1994·Granted Apr 1, 1997·61 cites·8 claims
- 0675US6339262B1Switching power supply using an input DC power supplyFUJI ELECTRIC CO LTD·Filed 2000·Granted Jan 15, 2002·28 cites·2 claims
- 0770US6111762ASwitching power supplyFUJI ELECTRIC CO LTD·Filed 1999·Granted Aug 29, 2000·40 cites·2 claims
- 0866US5936387AGate drive circuit for power converters that reduces surge voltagesFUJI ELECTRIC CO LTD·Filed 1997·Granted Aug 10, 1999·40 cites·8 claims
- 0964US6108218ASwitching power supply with power factor controlFUJI ELECTRIC CO LTD·Filed 1999·Granted Aug 22, 2000·33 cites·9 claims
- 1064US5889663ACircuit for balancing steady-state currents of switching devices in electric power converterFUJI ELECTRIC CO LTD·Filed 1998·Granted Mar 30, 1999·53 cites·6 claims
- 1157US2024038750A1Semiconductor moduleFUJI ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 1256US2024297596A1Power converter circuit and semiconductor moduleFUJI ELECTRIC CO LTD·Filed 2024·Application pending·0 cites
- 1352US11621626B2Driving apparatus, semiconductor apparatus, and driving methodFUJI ELECTRIC CO LTD·Filed 2021·Granted Apr 4, 2023·0 cites·12 claims
- 1451US2023344361A1Semiconductor device and semiconductor moduleFUJI ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 1550US6657873B2Switching power supply circuitFUJI ELECTRIC CO LTD·Filed 2002·Granted Dec 2, 2003·9 cites·6 claims
- 1647US5202619AControl circuit for a switching transistorFUJI ELECTRIC CO LTD·Filed 1991·Granted Apr 13, 1993·11 cites·20 claims
- 1745US2022052608A1Semiconductor oscillation suppression circuitFUJI ELECTRIC CO LTD·Filed 2021·Application pending·0 cites
- 1835US2001019490A1Switching power supplyFUJI ELECTRIC CO LTD·Filed 2001·Application pending·0 cites
- 1934US10566966B2Semiconductor device and oscillation suppressing deviceFUJI ELECTRIC CO LTD·Filed 2018·Granted Feb 18, 2020·0 cites·15 claims
Join the waitlist — get patent alerts
Get an alert when Seiki Igarashi files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →