Inventor · disambiguated record
Masaaki Sofue
Also filed as: SOFUE MASAAKI
13 granted patents·1 pending application·146 citations·filing 1990–2015
91Inventor score
Top patents by PatentIndex Score
14 records- 0192US8928220B2White light emitting device and display apparatusSAMSUNG ELECTRONICS CO LTD·Filed 2013·Granted Jan 6, 2015·9 cites·20 claims
- 0290US5086422AOptical disk apparatusRICOH KK·Filed 1990·Granted Feb 4, 1992·64 cites·11 claims
- 0364US9190583B2White light emitting device and display apparatusSAMSUNG ELECTRONICS CO LTD·Filed 2014·Granted Nov 17, 2015·0 cites·20 claims
- 0460US9548426B2Semiconductor light-emitting deviceSAMSUNG ELECTRONICS CO LTD·Filed 2015·Granted Jan 17, 2017·1 cites·17 claims
- 0556US5991251AMethod and apparatus for changing laser beam power of an optical storage device for various types of compact disksRICOH KK·Filed 1997·Granted Nov 23, 1999·16 cites·34 claims
- 0656US5392274AOptical pickup deviceRICOH KK·Filed 1992·Granted Feb 21, 1995·11 cites·4 claims
- 0749US6128259AOptical pickup apparatus for accurate detection of a tracking error signalRICOH KK·Filed 1998·Granted Oct 3, 2000·11 cites·17 claims
- 0847US5668793ADisk cartridge driving apparatusRICOH KK·Filed 1996·Granted Sep 16, 1997·8 cites·13 claims
- 0943US5926451AOptical disk unit having reduced wobbleRICOH KK·Filed 1997·Granted Jul 20, 1999·6 cites·8 claims
- 1042US5875155AOptical disk unit having reduced recording and reproducing errorsRICOH KK·Filed 1997·Granted Feb 23, 1999·6 cites·13 claims
- 1142US2012198981A1Substrate cutting apparatus and method of cutting substrate using the sameSOFUE MASAAKI·Filed 2012·Application pending·0 cites
- 1240US6147947AOptical disk apparatus for accessing optical disks with different substrate thicknessesRICOH KK·Filed 1998·Granted Nov 14, 2000·5 cites·19 claims
- 1337US5737292AOptical data recording/reproducing deviceRICOH KK·Filed 1996·Granted Apr 7, 1998·4 cites·10 claims
- 1436US6353583B1Signal operational circuit for a multi-beam pick-up deviceRICOH KK·Filed 1999·Granted Mar 5, 2002·5 cites·26 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →