Inventor · disambiguated record
Katsuhiko Ohtomo
Also filed as: OHTOMO KATSUHIKO
11 granted patents·180 citations·filing 1992–2006
91Inventor score
Technology areasG11B
Top patents by PatentIndex Score
11 records- 0188US6487164B1Optical recording medium capable of assuring sufficient levels of signals required for reading/writing data, and stamper for manufacture of the sameSONY CORP·Filed 2000·Granted Nov 26, 2002·27 cites·2 claims
- 0282US5539724AOptical disk having wobbled, discontinuous groovesSONY CORP·Filed 1995·Granted Jul 23, 1996·41 cites·5 claims
- 0381US5763037ABase for optical recording medium and stamper for manufacturing base of optical recording mediumSONY CORP·Filed 1995·Granted Jun 9, 1998·37 cites·4 claims
- 0470US5822294AOptical recording medium having a specified range of pit widths and pit depthsSONY CORP·Filed 1997·Granted Oct 13, 1998·21 cites·15 claims
- 0569US6975578B2Optical recording medium with grooves, optical recording medium master with grooves, apparatus for manufacturing optical recording medium master with grooves, and optical recording/reproducing apparatusSONY CORP·Filed 2002·Granted Dec 13, 2005·8 cites·12 claims
- 0667US5663946AOptical disc having buffering areas capable of storing a pattern for obtaining tracking error signals and recording and/or reproducing apparatus thereforSONY CORP·Filed 1995·Granted Sep 2, 1997·20 cites·14 claims
- 0753US8154981B2Record medium, its manufacturing method, mother disc for record medium, and its manufacturing methodENDOH SOHMEI·Filed 2006·Granted Apr 10, 2012·0 cites·13 claims
- 0852US5661706ARecording and reproducing apparatus and recording and reproducing method providing real time editing while data is being inputSONY CORP·Filed 1995·Granted Aug 26, 1997·11 cites·12 claims
- 0946US5838654AOptical recording medium having a specified range of pit widths and pit depthsSONY CORP·Filed 1997·Granted Nov 17, 1998·7 cites·20 claims
- 1044US6349085B1High density recording medium with pit width to track pitch ratio in the range of 0.4 to 0.55 for push-pull tracking servo controlSONY CORP·Filed 1999·Granted Feb 19, 2002·6 cites·3 claims
- 1134US5715223AMethod of measuring a deviation between a centerline between grooves and a control prepit pattern on a discSONY CORP·Filed 1992·Granted Feb 3, 1998·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →