Inventor · disambiguated record
Masao Kumagai
Also filed as: KUMAGAI MASAO
21 granted patents·2 pending applications·172 citations·filing 1980–2011
94Inventor score
Files withFUJITSU LTD10ALPS ELECTRIC CO LTD4FUJITSU SEMICONDUCTOR LTD2FUJI MFG CO LTD1FUJITSU MICROELECTRONICS LTD1
Top patents by PatentIndex Score
23 records- 0182US7268763B2Method for driving display and drive circuit for displayFUJITSU LTD·Filed 2003·Granted Sep 11, 2007·24 cites·12 claims
- 0282US5939543AStable solid 2-octynyl adenosine and process for producing the sameYAMASA SHOYU KK·Filed 1992·Granted Aug 17, 1999·49 cites·24 claims
- 0380US8518543B2DLC-coated sliding member and method for producing the sameKANO MAKOTO·Filed 2009·Granted Aug 27, 2013·5 cites·14 claims
- 0478US6847346B2Semiconductor device equipped with transfer circuit for cascade connectionFUJITSU LTD·Filed 2002·Granted Jan 25, 2005·19 cites·20 claims
- 0572US7580020B2Semiconductor device and liquid crystal panel driver deviceFUJITSU MICROELECTRONICS LTD·Filed 2006·Granted Aug 25, 2009·2 cites·8 claims
- 0667US8823344B2Control circuit, electronic device, and method for controlling power supplyKUSHIDA KOICHIRO·Filed 2011·Granted Sep 2, 2014·5 cites·15 claims
- 0766US7567873B2Nondestructive inspection method and apparatus for a surface processed by shot peeningFUJI MFG CO LTD·Filed 2007·Granted Jul 28, 2009·4 cites·12 claims
- 0862US4259559AIlluminated push-button electrical switch assemblyALPS ELECTRIC CO LTD·Filed 1980·Granted Mar 31, 1981·11 cites·5 claims
- 0956US4835642AMagnetic head assembly for double-sided disk drive apparatusALPS ELECTRIC CO LTD·Filed 1988·Granted May 30, 1989·12 cites·5 claims
- 1056US4383153ALocking type push-button switchALPS ELECTRIC CO LTD·Filed 1981·Granted May 10, 1983·9 cites·4 claims
- 1155US7098878B2Semiconductor device and liquid crystal panel driver deviceFUJITSU LTD·Filed 2002·Granted Aug 29, 2006·4 cites·1 claims
- 1250US7079104B2Semiconductor device and liquid crystal panel display driverFUJITSU LTD·Filed 2002·Granted Jul 18, 2006·2 cites·9 claims
- 1347US7215312B2Semiconductor device, display device, and signal transmission systemFUJITSU LTD·Filed 2003·Granted May 8, 2007·1 cites·7 claims
- 1447US7180512B2Integrated circuit free from accumulation of duty ratio errorsFUJITSU LTD·Filed 2003·Granted Feb 20, 2007·2 cites·8 claims
- 1546US4883975ASchmitt trigger circuitFUJITSU LTD·Filed 1988·Granted Nov 28, 1989·9 cites·20 claims
- 1644US2009250859A1Method and Device for Manufacture of Connecting RodHONDA MOTOR CO LTD·Filed 2006·Application pending·0 cites
- 1740US7978168B2D/A converterFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Jul 12, 2011·0 cites·7 claims
- 1840US7903071B2Driver IC for display and display including sameFUJITSU SEMICONDUCTOR LTD·Filed 2007·Granted Mar 8, 2011·0 cites·15 claims
- 1940US4764830AMagnetic head assembly in floppy disk driveALPS ELECTRIC CO LTD·Filed 1986·Granted Aug 16, 1988·4 cites·3 claims
- 2039US4703202ATwo-stage gate circuit providing inverted and non-inverted outputsFUJITSU LTD·Filed 1985·Granted Oct 27, 1987·5 cites·11 claims
- 2139US2003151575A1Driver circuit for liquid crystal display panelFUJITSU LTD·Filed 2002·Application pending·0 cites
- 2236US4774620ALogic circuitFUJITSU LTD·Filed 1987·Granted Sep 27, 1988·4 cites·3 claims
- 2332US7838075B2Surface strengthening methodJATCO LTD·Filed 2006·Granted Nov 23, 2010·1 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →