Inventor · disambiguated record
Masaaki Matsumaru
Also filed as: MATSUMARU MASAAKI
7 granted patents·10 pending applications·126 citations·filing 1995–2009
86Inventor score
Top patents by PatentIndex Score
17 records- 0183US5959962AOptical disk having a format condition information driveTOSHIBA KK·Filed 1997·Granted Sep 28, 1999·44 cites·22 claims
- 0283US5809003AOptical disk and optical information reproducing apparatusTOSHIBA KK·Filed 1997·Granted Sep 15, 1998·45 cites·30 claims
- 0366US7355957B2Optical disc medium having a system information recording area of low recording densityNEC CORP·Filed 2004·Granted Apr 8, 2008·6 cites·3 claims
- 0459US2009268580A1Master recording apparatus, master recording method, master for stamper containing heat-sensitive resist material, and method of forming film of heat-sensitiveTOSHIBA KK·Filed 2009·Application pending·0 cites
- 0558US6987714B2Disk, disk device and track center detection methodTOSHIBA KK·Filed 2002·Granted Jan 17, 2006·3 cites·6 claims
- 0658US6026072AOptical disk and method of manufacturing the sameTOSHIBA KK·Filed 1997·Granted Feb 15, 2000·14 cites·12 claims
- 0755US6741546B2Information recording medium, information recording apparatus, and information reproduction apparatusTOSHIBA KK·Filed 2002·Granted May 25, 2004·2 cites·15 claims
- 0855US5740138AApparatus for recording information on a primary optical disk to manufacture optical disksTOSHIBA KK·Filed 1995·Granted Apr 14, 1998·12 cites·14 claims
- 0953US2009196148A1Master recording apparatus and master recording methodTOSHIBA KK·Filed 2009·Application pending·0 cites
- 1050US2008002563A1Information recording medium and disc apparatusYAMAMOTO RYOSUKE·Filed 2007·Application pending·0 cites
- 1150US2008013440A1Information recording medium and disc apparatusYAMAMOTO RYOSUKE·Filed 2007·Application pending·0 cites
- 1250US2008002561A1Information recording medium and disc apparatusMATSUMARU MASAAKI·Filed 2007·Application pending·0 cites
- 1350US2008159117A1Optical disc, optical disc reproducing apparatus and optical disc reproducing methodTOSHIBA KK·Filed 2007·Application pending·0 cites
- 1448US2007217319A1Optical disk and optical disk deviceOOMACHI NORITAKE·Filed 2007·Application pending·0 cites
- 1547US2007217321A1Optical disk and optical disk apparatusOOMACHI NORITAKE·Filed 2007·Application pending·0 cites
- 1644US2004196746A1Information recording medium, information recording/reproducing method, and information recording/reproducing deviceFiled 2004·Application pending·0 cites
- 1735US2001030927A1Optical disc on which pre-pits are recordedTOSHIBA KK·Filed 2001·Application pending·0 cites
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