Inventor · disambiguated record
Kenichi Fukumoto
Also filed as: FUKUMOTO KENICHI
49 granted patents·4 pending applications·1,573 citations·filing 2001–2018
98Inventor score
Top patents by PatentIndex Score
53 records- 0199US7466566B2DC-AC converter, controller IC therefor, and electronic apparatus utilizing such DC-AC converterROHM CO LTD·Filed 2005·Granted Dec 16, 2008·175 cites·16 claims
- 0298US8044604B2InverterROHM CO LTD·Filed 2009·Granted Oct 25, 2011·990 cites·7 claims
- 0390US6927989B2DC-AC converter and controller IC for the sameROHM CO LTD·Filed 2003·Granted Aug 9, 2005·72 cites·6 claims
- 0488US7248488B2DC-AC converter, and method for supplying AC powerROHM CO LTD·Filed 2006·Granted Jul 24, 2007·15 cites·5 claims
- 0588US7099168B2DC-AC converter and controller IC thereforROHM CO LTD·Filed 2005·Granted Aug 29, 2006·21 cites·10 claims
- 0687US7944652B2Inverter with protection functionROHM CO LTD·Filed 2006·Granted May 17, 2011·14 cites·36 claims
- 0787US7394671B2Controller IC, DC-AC conversion apparatus, and parallel running system of DC-AC conversion apparatusesROHM CO LTD·Filed 2005·Granted Jul 1, 2008·16 cites·10 claims
- 0882US7292463B2DC-AC converter and controller IC thereforROHM CO LTD·Filed 2006·Granted Nov 6, 2007·14 cites·4 claims
- 0982US7126831B2DC-AC converter, and method for supplying AC powerROHM CO LTD·Filed 2006·Granted Oct 24, 2006·15 cites·5 claims
- 1081US6982889B2DC/AC converter and its controller ICROHM CO LTD·Filed 2003·Granted Jan 3, 2006·31 cites·10 claims
- 1180US7236377B2DC-AC converter and controller IC thereforROHM CO LTD·Filed 2006·Granted Jun 26, 2007·11 cites·7 claims
- 1280US7046526B2DC-AC converter, and method for supplying AC powerROHM CO LTD·Filed 2004·Granted May 16, 2006·31 cites·6 claims
- 1379US8599333B2Circuit and method for driving LED string for backlight, and backlight and display device using the circuitSASAKI YOSHIKAZU·Filed 2010·Granted Dec 3, 2013·3 cites·11 claims
- 1479US7323832B2Inverter with dimming functionROHM CO LTD·Filed 2007·Granted Jan 29, 2008·7 cites·11 claims
- 1577US7339802B2DC-AC converter and controller IC thereforROHM CO LTD·Filed 2007·Granted Mar 4, 2008·9 cites·16 claims
- 1677US7095632B2Dc/ac conversion device and ac power supply methodROHM CO LTD·Filed 2003·Granted Aug 22, 2006·22 cites·15 claims
- 1777US6982886B2Dc-ac converter parallel operation system and controller ic thereforROHM CO LTD·Filed 2003·Granted Jan 3, 2006·30 cites·11 claims
- 1875US7492620B2DC-AC converter and controller IC thereofROHM CO LTD·Filed 2007·Granted Feb 17, 2009·10 cites·4 claims
- 1973US7095635B2Dc/ac converter and controller ICROHM CO LTD·Filed 2003·Granted Aug 22, 2006·19 cites·16 claims
- 2072US7936137B2InverterROHM CO LTD·Filed 2008·Granted May 3, 2011·4 cites·9 claims
- 2171US7599202B2DC-AC converter with feedback signal control circuit utilizing power supply voltage, controller IC therefor, and electronic apparatus utilizing the DC-AC converterROHM CO LTD·Filed 2005·Granted Oct 6, 2009·10 cites·8 claims
- 2271US7554823B2Controller IC, DC-AC conversion apparatus, and parallel running system of DC-AC conversion apparatusesROHM CO LTD·Filed 2008·Granted Jun 30, 2009·4 cites·10 claims
- 2367US7362150B2Method and system for synchronizing phase of triangular signalROHM CO LTD·Filed 2007·Granted Apr 22, 2008·4 cites·5 claims
- 2464US7633769B2DC-AC converter, and method for supplying AC powerROHM CO LTD·Filed 2007·Granted Dec 15, 2009·5 cites·5 claims
- 2564US7233509B2Parallel operating system of DC-AC converters and controller IC thereforROHM CO LTD·Filed 2005·Granted Jun 19, 2007·4 cites·5 claims
- 2663US7525820B2InverterROHM CO LTD·Filed 2007·Granted Apr 28, 2009·5 cites·11 claims
- 2762US7920390B2DC-AC converter, controller IC therefor, and electronic apparatus utilizing such DC-AC converterROHM CO LTD·Filed 2008·Granted Apr 5, 2011·1 cites·21 claims
- 2860US7554370B2Method and system for synchronizing phase of triangular signalROHM CO LTD·Filed 2008·Granted Jun 30, 2009·2 cites·3 claims
- 2958US7622870B2Inverter apparatusROHM CO LTD·Filed 2007·Granted Nov 24, 2009·2 cites·13 claims
- 3058US7236375B2DC/AC converter and its controller ICROHM CO LTD·Filed 2003·Granted Jun 26, 2007·13 cites·9 claims
- 3156US7948282B2Triangular-wave generating circuit, and inverter, light emitting device and liquid crystal television using the circuitROHM CO LTD·Filed 2006·Granted May 24, 2011·4 cites·8 claims
- 3256US7589981B2DC-AC converter and method of supplying AC powerROHM CO LTD·Filed 2008·Granted Sep 15, 2009·2 cites·8 claims
- 3355US7859866B2Controller IC, DC-AC conversion apparatus, and parallel running system of DC-AC conversion apparatusesROHM CO LTD·Filed 2009·Granted Dec 28, 2010·0 cites·9 claims
- 3453US8294494B2Triangular-wave generating circuit synchronized with an external circuitHAGINO JUNICHI·Filed 2007·Granted Oct 23, 2012·2 cites·12 claims
- 3552US10467967B2Driving circuit of LED for liquid crystal backlight, control circuit thereof, and electronic deviceROHM CO LTD·Filed 2017·Granted Nov 5, 2019·0 cites·20 claims
- 3650US7224196B2Method and system for synchronizing phase of triangular signalROHM CO LTD·Filed 2003·Granted May 29, 2007·4 cites·13 claims
- 3749US2010188614A1Driving apparatus and method for fluorescent lampROHM CO LTD·Filed 2008·Application pending·0 cites
- 3848US10820385B2LED drive circuit, LED drive device, and LED drive systemROHM CO LTD·Filed 2018·Granted Oct 27, 2020·0 cites·17 claims
- 3948US7778047B2InverterROHM CO LTD·Filed 2009·Granted Aug 17, 2010·1 cites·11 claims
- 4048US7471528B2Parallel operating system of DC-AC converters and controller IC thereforROHM CO LTD·Filed 2007·Granted Dec 30, 2008·0 cites·6 claims
- 4148US2008303447A1Inverter apparatusROHM CO LTD·Filed 2008·Application pending·0 cites
- 4247US7724554B2DC-AC converter and controller IC thereofROHM CO LTD·Filed 2009·Granted May 25, 2010·1 cites·10 claims
- 4346US7859197B2Inverter using PWM methodROHM CO LTD·Filed 2006·Granted Dec 28, 2010·0 cites·27 claims
- 4446US2009015177A1Power supply device and light-emitting device and electronic equipment using such power supply deviceROHM CO LTD·Filed 2007·Application pending·0 cites
- 4545US7835161B2DC-AC converter and method of supplying AC powerROHM CO LTD·Filed 2009·Granted Nov 16, 2010·0 cites·10 claims
- 4643US7538536B2DC-AC converter and controller IC thereforROHM CO LTD·Filed 2008·Granted May 26, 2009·0 cites·12 claims
- 4743US7403401B2DC-AC converter and method of supplying AC powerROHM CO LTD·Filed 2007·Granted Jul 22, 2008·0 cites·3 claims
- 4842US7272022B2DC-AC converter and method of supplying AC powerROHM CO LTD·Filed 2006·Granted Sep 18, 2007·0 cites·6 claims
- 4938US8264162B2Inverter apparatusNAM GOANG-WOO·Filed 2009·Granted Sep 11, 2012·0 cites·15 claims
- 5038US8030850B2Fluorescent lamp driving apparatus with abnormality detection circuitROHM CO LTD·Filed 2006·Granted Oct 4, 2011·0 cites·24 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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