Inventor · disambiguated record
Nobuhiko Tsukahara
Also filed as: TSUKAHARA NOBUHIKO
17 granted patents·3 pending applications·307 citations·filing 1981–2010
95Inventor score
Top patents by PatentIndex Score
20 records- 0195US4445155AFlexible magnetic disk cassette and a recording and/or reproducing apparatus for the sameSONY CORP·Filed 1981·Granted Apr 24, 1984·55 cites·20 claims
- 0291US8281327B2Mechanism to load disc from cartridge to recording apparatusGOTO NAOFUMI·Filed 2010·Granted Oct 2, 2012·19 cites·8 claims
- 0385US6414928B1Disc tray, disc-tray accommodating apparatus and disc drive apparatusSONY CORP·Filed 1999·Granted Jul 2, 2002·38 cites·7 claims
- 0483US8356312B2Cartridge drive apparatus for a disc cartridge that holds a discSONY CORP·Filed 2010·Granted Jan 15, 2013·7 cites·7 claims
- 0582US7079733B2Optical communication system, optical communication apparatus, and optical cableSONY CORP·Filed 2004·Granted Jul 18, 2006·25 cites·14 claims
- 0677US7112746B2Data transmission cableSONY CORP·Filed 2003·Granted Sep 26, 2006·18 cites·2 claims
- 0776US6021107AOptical pickup device and recording and/or reproducing apparatus for optical discSONY CORP·Filed 1997·Granted Feb 1, 2000·29 cites·28 claims
- 0876US5448537AMagnet-optical disc drive device with sure disc placementSONY CORP·Filed 1993·Granted Sep 5, 1995·26 cites·7 claims
- 0973US4697216ADisk drive apparatus with automatic centering arrangementSONY CORP·Filed 1985·Granted Sep 29, 1987·19 cites·11 claims
- 1072US7948379B2Optical disk recording and reproducing apparatus, remote controller, and content management methodSONY CORP·Filed 2005·Granted May 24, 2011·2 cites·11 claims
- 1172US4989107AMicrofloppy disk drive with centering mechanismSONY CORP·Filed 1986·Granted Jan 29, 1991·18 cites·15 claims
- 1266US6345035B1Disc tray, disc-tray accommodating apparatus and disc drive apparatusSONY CORP·Filed 1999·Granted Feb 5, 2002·14 cites·8 claims
- 1361US8307383B2Disc cartridgeKUBO TAKESHI·Filed 2010·Granted Nov 6, 2012·1 cites·15 claims
- 1461US6407982B1Disk tray, disk storing apparatus and disk driveSONY CORP·Filed 1997·Granted Jun 18, 2002·12 cites·6 claims
- 1561US4612588AHead moving apparatus using stepping motorSONY CORP·Filed 1985·Granted Sep 16, 1986·12 cites·4 claims
- 1650US5970045AOptical disc and disc cartridgeSONY CORP·Filed 1997·Granted Oct 19, 1999·8 cites·12 claims
- 1748US2007121481A1Optical disk drive apparatus and optical recording-reproducing apparatusTSUKAHARA NOBUHIKO·Filed 2006·Application pending·0 cites
- 1846US2006174254A1Pickup unit, drive unit, recording medium drive, and electronic deviceTAKASAWA TAKEHARU·Filed 2006·Application pending·0 cites
- 1941US6151293ATwo-layer optical disk unaffected by position deviationSONY CORP·Filed 1998·Granted Nov 21, 2000·4 cites·3 claims
- 2039US2002196580A1Magnetic disk drive and disk cartridgeFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →