Inventor · disambiguated record
Nobuhiro Tokushuku
Also filed as: TOKUSHUKU NOBUHIRO
38 granted patents·1 pending application·781 citations·filing 1988–2005
98Inventor score
Technology areasG11B
Files withHITACHI LTD38
Top patents by PatentIndex Score
39 records- 0199US6549497B2Optical reproducing methodHITACHI LTD·Filed 2002·Granted Apr 15, 2003·244 cites·8 claims
- 0298US5936933AInformation recording medium and method and apparatus for recording and reproducing information using the sameHITACHI LTD·Filed 1997·Granted Aug 10, 1999·105 cites·15 claims
- 0396US6490236B1Method and apparatus for optical disk deviceHITACHI LTD·Filed 2000·Granted Dec 3, 2002·79 cites·11 claims
- 0496US5930228AMethod and apparatus for recording and reproducing information using pseudo identification signalHITACHI LTD·Filed 1998·Granted Jul 27, 1999·53 cites·6 claims
- 0595US6388987B2Information recording medium having wobbled groove structure and plural zonesHITACHI LTD·Filed 2001·Granted May 14, 2002·24 cites·2 claims
- 0694US6542458B2Information recording medium having wobbled grovesHITACHI LTD·Filed 2002·Granted Apr 1, 2003·21 cites·9 claims
- 0793US6219331B1Information recording medium with tracks having a groove structure having a fixed cycle of wobbleHITACHI LTD·Filed 1999·Granted Apr 17, 2001·37 cites·12 claims
- 0892US6545960B2Information recording medium and method and apparatus for recording and reproducing information using the sameHITACHI LTD·Filed 2002·Granted Apr 8, 2003·15 cites·2 claims
- 0990US7092330B2Information recording methodHITACHI LTD·Filed 2005·Granted Aug 15, 2006·4 cites·2 claims
- 1090US7085202B2Information recording methodHITACHI LTD·Filed 2005·Granted Aug 1, 2006·4 cites·2 claims
- 1187US6490233B2Optical reproducing methodHITACHI LTD·Filed 2002·Granted Dec 3, 2002·9 cites·1 claims
- 1286US6552978B2Information recording apparatusHITACHI LTD·Filed 2002·Granted Apr 22, 2003·8 cites·8 claims
- 1385US6545961B2Optical reproducing methodHITACHI LTD·Filed 2002·Granted Apr 8, 2003·7 cites·2 claims
- 1485US6340555B1Information recording medium and information recording and reproducing apparatus using the sameHITACHI LTD·Filed 2000·Granted Jan 22, 2002·17 cites·24 claims
- 1583US6545962B2Optical reproducing method for reproducing information on an optical medium having groove structure with fixed cycle of wobbleHITACHI LTD·Filed 2002·Granted Apr 8, 2003·6 cites·4 claims
- 1682US6728176B2Information recording methodHITACHI LTD·Filed 2003·Granted Apr 27, 2004·6 cites·1 claims
- 1779US6383595B1Information recording mediumHITACHI LTD·Filed 1999·Granted May 7, 2002·33 cites·24 claims
- 1878US6665244B2Optical reproducing methodHITACHI LTD·Filed 2002·Granted Dec 16, 2003·4 cites·2 claims
- 1978US6542448B2Information recording apparatus for recording information on an optical medium having a groove structure with a fixed cycle of wobbleHITACHI LTD·Filed 2002·Granted Apr 1, 2003·4 cites·4 claims
- 2078US6493295B2Information recording apparatusHITACHI LTD·Filed 2002·Granted Dec 10, 2002·4 cites·1 claims
- 2174US6456579B1Method for recording information, apparatus for recording information, and information recording mediumHITACHI LTD·Filed 2000·Granted Sep 24, 2002·8 cites·14 claims
- 2273US5539710AVideo optical disk system compatible with both read only and writable optical disks having the same recording formatHITACHI LTD·Filed 1993·Granted Jul 23, 1996·24 cites·17 claims
- 2372US4991163AOptical information medium with sample mark area and multiple transcription preventionHITACHI LTD·Filed 1988·Granted Feb 5, 1991·20 cites·8 claims
- 2471US6132932AInformation recording medium and information recording and reproducing apparatus using the sameHITACHI LTD·Filed 1997·Granted Oct 17, 2000·18 cites·5 claims
- 2568US4996682AOptical information medium having paired wobble pitts with continuous groove therebetweenHITACHI LTD·Filed 1988·Granted Feb 26, 1991·15 cites·14 claims
- 2665US7088654B2Information recording methodHITACHI LTD·Filed 2005·Granted Aug 8, 2006·0 cites·2 claims
- 2765US7088653B2Information recording methodHITACHI LTD·Filed 2005·Granted Aug 8, 2006·0 cites·8 claims
- 2865US7085208B2Information recording methodHITACHI LTD·Filed 2005·Granted Aug 1, 2006·0 cites·8 claims
- 2965US7082085B2Information recording methodHITACHI LTD·Filed 2005·Granted Jul 25, 2006·0 cites·4 claims
- 3065US7082087B2Information recording methodHITACHI LTD·Filed 2005·Granted Jul 25, 2006·0 cites·2 claims
- 3165US7082096B2Information recording methodHITACHI LTD·Filed 2005·Granted Jul 25, 2006·0 cites·1 claims
- 3264US7106669B2Information recording methodHITACHI LTD·Filed 2005·Granted Sep 12, 2006·0 cites·1 claims
- 3364US7082083B2Information recording methodHITACHI LTD·Filed 2005·Granted Jul 25, 2006·0 cites·1 claims
- 3464US6996036B2Information recording methodHITACHI LTD·Filed 2004·Granted Feb 7, 2006·1 cites·1 claims
- 3564US6388986B2Information recording medium having wobbled groove structureHITACHI LTD·Filed 2001·Granted May 14, 2002·1 cites·3 claims
- 3663US6580686B2Information recording medium recording data on wobbled groove structure of recording mediumHITACHI LTD·Filed 2002·Granted Jun 17, 2003·1 cites·2 claims
- 3756US6522612B2Method for recording information, apparatus for recording information and information recording mediumHITACHI LTD·Filed 2001·Granted Feb 18, 2003·2 cites·4 claims
- 3849US5642345ARecording/reproducing apparatus including frequency modulator for frequency-modulating digital-modulated signal and frequency demodulator for frequency-demodulating signal to obtain digital-modulated signalHITACHI LTD·Filed 1994·Granted Jun 24, 1997·7 cites·2 claims
- 3943US2002015914A1Information recording medium and information recording and reproducing apparatus using the sameFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →