Inventor · disambiguated record
Kazuo Okawa
Also filed as: OKAWA KAZUO
20 granted patents·138 citations·filing 2002–2012
94Inventor score
Top patents by PatentIndex Score
20 records- 0191US7511433B2Discharge lamp lighting device and projectorSEIKO EPSON CORP·Filed 2007·Granted Mar 31, 2009·23 cites·7 claims
- 0289US7923940B2Discharge lamp lighting device and projectorSEIKO EPSON CORP·Filed 2009·Granted Apr 12, 2011·17 cites·12 claims
- 0386US8203280B2Light source device, projector, and driving method of discharge lampYAMAUCHI KENTARO·Filed 2008·Granted Jun 19, 2012·7 cites·7 claims
- 0486US6979960B2Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the sameSEIKO EPSON CORP·Filed 2003·Granted Dec 27, 2005·38 cites·8 claims
- 0584US7946715B2Light source and projectorSEIKO EPSON CORP·Filed 2008·Granted May 24, 2011·13 cites·12 claims
- 0682US8558471B2Light source device, projector, and driving method of discharge lampYAMAUCHI KENTARO·Filed 2011·Granted Oct 15, 2013·4 cites·9 claims
- 0780US8264170B2Discharge lamp lighting device, method of driving discharge lamp, and projectorTERASHIMA TETSUO·Filed 2010·Granted Sep 11, 2012·4 cites·20 claims
- 0878US9392676B2Discharge lamp lighting device, projector, and method for driving discharge lampOKAWA KAZUO·Filed 2010·Granted Jul 12, 2016·5 cites·11 claims
- 0974US7999488B2Ignition controller, light source, projector and ignition control methodSEIKO EPSON CORP·Filed 2008·Granted Aug 16, 2011·5 cites·11 claims
- 1071US7999490B2Light source, projector, and method for driving light sourceSEIKO EPSON CORP·Filed 2008·Granted Aug 16, 2011·4 cites·20 claims
- 1170US8167438B2Light source device, projector, and driving method of discharge lampYAMAUCHI KENTARO·Filed 2008·Granted May 1, 2012·2 cites·10 claims
- 1265US7439681B2Ballast and projectorSEIKO EPSON CORP·Filed 2006·Granted Oct 21, 2008·2 cites·20 claims
- 1361US7084586B2Discharge lamp lighting apparatus and discharge lamp apparatusSEIKO EPSON CORP·Filed 2004·Granted Aug 1, 2006·7 cites·2 claims
- 1460US8044613B2Discharge lamp lighting device, control method thereof, and projectorSEIKO EPSON CORP·Filed 2009·Granted Oct 25, 2011·1 cites·10 claims
- 1557US8937436B2Light source device, projector, and driving method of discharge lampYAMAUCHI KENTARO·Filed 2012·Granted Jan 20, 2015·0 cites·15 claims
- 1654US8102128B2Driving method and driving device for discharge lamp, light source device, and image display deviceTERASHIMA TETSUO·Filed 2009·Granted Jan 24, 2012·0 cites·14 claims
- 1754US8089214B2Driving method and driving device for discharge lamp, light source device, and image display deviceTERASHIMA TETSUO·Filed 2009·Granted Jan 3, 2012·0 cites·11 claims
- 1853US8076861B2Driving method and driving device for discharge lamp, light source device, and image display deviceTERASHIMA TETSUO·Filed 2009·Granted Dec 13, 2011·0 cites·11 claims
- 1953US6815912B2Discharge lamp lighting apparatus and discharge lamp apparatusTDK CORP·Filed 2002·Granted Nov 9, 2004·4 cites·15 claims
- 2047US8541955B2Discharge lamp lighting device, projector, and discharge lamp lighting device control methodOKAWA KAZUO·Filed 2008·Granted Sep 24, 2013·2 cites·14 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →