Inventor · disambiguated record
Sadaharu Oka
Also filed as: OKA SADAHARU
16 granted patents·6 pending applications·39 citations·filing 1990–2009
89Inventor score
Files withYOKOGAWA ELECTRIC CORP22
Top patents by PatentIndex Score
22 records- 0179US7667544B2Clock reproducing apparatusYOKOGAWA ELECTRIC CORP·Filed 2007·Granted Feb 23, 2010·9 cites·6 claims
- 0265US7116856B2Optical switch matrixYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Oct 3, 2006·9 cites·13 claims
- 0360US7787777B2Optical packet network systemYOKOGAWA ELECTRIC CORP·Filed 2006·Granted Aug 31, 2010·2 cites·4 claims
- 0455US6930623B2Optical signal processing systemYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Aug 16, 2005·3 cites·8 claims
- 0551US7035490B2Active diffraction gratingYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Apr 25, 2006·4 cites·4 claims
- 0649US6891986B2Optical switchYOKOGAWA ELECTRIC CORP·Filed 2004·Granted May 10, 2005·3 cites·13 claims
- 0746US7746549B2Optical communication apparatusYOKOGAWA ELECTRIC CORP·Filed 2006·Granted Jun 29, 2010·0 cites·5 claims
- 0846US7620284B2Optical waveform shaping device including portions for respectively absorbing and amplifying transmitted optical signalYOKOGAWA ELECTRIC CORP·Filed 2006·Granted Nov 17, 2009·0 cites·8 claims
- 0944US7732807B2Integrated circuitYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Jun 8, 2010·0 cites·16 claims
- 1044US7362929B2Optical switchYOKOGAWA ELECTRIC CORP·Filed 2005·Granted Apr 22, 2008·0 cites·19 claims
- 1144US7113665B2Optical routerYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Sep 26, 2006·0 cites·11 claims
- 1243US6552325B1Photo diode arrayYOKOGAWA ELECTRIC CORP·Filed 2000·Granted Apr 22, 2003·2 cites·13 claims
- 1343US2010066456A1Clock reproducing apparatusYOKOGAWA ELECTRIC CORP·Filed 2009·Application pending·0 cites
- 1443US2006034736A1MicroreactorYOKOGAWA ELECTRIC CORP·Filed 2005·Application pending·0 cites
- 1542US2007019695A1Optical and elementYOKOGAWA ELECTRIC CORP·Filed 2006·Application pending·0 cites
- 1641US7176437B2Photoelectric conversion apparatus and photoelectric conversion system using the sameYOKOGAWA ELECTRIC CORP·Filed 2005·Granted Feb 13, 2007·0 cites·7 claims
- 1740US2005129352A1Optical path control deviceYOKOGAWA ELECTRIC CORP·Filed 2004·Application pending·0 cites
- 1839US7317848B2Optical switchYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Jan 8, 2008·0 cites·11 claims
- 1937US2004208412A1Optical path control deviceYOKOGAWA ELECTRIC CORP·Filed 2004·Application pending·0 cites
- 2037US2004213584A1Optical signal processing apparatusYOKOGAWA ELECTRIC CORP·Filed 2004·Application pending·0 cites
- 2136US5132557ASampling headYOKOGAWA ELECTRIC CORP·Filed 1990·Granted Jul 21, 1992·7 cites·7 claims
- 2234US7307432B2Electron beam generating apparatus and optical sampling apparatus using the sameYOKOGAWA ELECTRIC CORP·Filed 2004·Granted Dec 11, 2007·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →