Inventor · disambiguated record
Masatoshi Ohtake
Also filed as: IZUMITA MORISHI · OHTAKE MASATOSHI
26 granted patents·1 pending application·764 citations·filing 1978–2008
97Inventor score
Top patents by PatentIndex Score
27 records- 0198US6236635B1Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 1998·Granted May 22, 2001·93 cites·3 claims
- 0298US4866688AComposite tracking servo system for optical disc apparatus with track offset correctionHITACHI LTD·Filed 1986·Granted Sep 12, 1989·111 cites·20 claims
- 0398US4748609AMethod and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offsetHITACHI LTD·Filed 1986·Granted May 31, 1988·119 cites·21 claims
- 0497US7012871B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2004·Granted Mar 14, 2006·40 cites·2 claims
- 0597US4707816AMethod and apparatus for composite wobbled and push-pull tracking servo systemHITACHI LTD·Filed 1986·Granted Nov 17, 1987·98 cites·13 claims
- 0694US6529467B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Mar 4, 2003·25 cites·5 claims
- 0794US6343056B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Jan 29, 2002·23 cites·8 claims
- 0894US4199820ARandom access storage apparatus with a movable recording mediumHITACHI LTD·Filed 1978·Granted Apr 22, 1980·46 cites·7 claims
- 0989US4785442ALight spot position control system and method by sampling servoHITACHI LTD·Filed 1987·Granted Nov 15, 1988·38 cites·7 claims
- 1084US7907490B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·2 cites·1 claims
- 1183US6608806B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2002·Granted Aug 19, 2003·8 cites·3 claims
- 1278US4949325AMethod and associated apparatus and medium for optical recording and reproducing informationHITACHI LTD·Filed 1988·Granted Aug 14, 1990·22 cites·13 claims
- 1374US4872152ALight spot position control system and method by sampled servoHITACHI LTD·Filed 1987·Granted Oct 3, 1989·18 cites·8 claims
- 1468US7911910B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 22, 2011·0 cites·1 claims
- 1568US7907491B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·0 cites·1 claims
- 1667US7852727B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Dec 14, 2010·0 cites·2 claims
- 1767US7684301B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 23, 2010·0 cites·3 claims
- 1867US4759628AWavelength scanning interferometry and interferometer employing laser diodeHITACHI LTD·Filed 1986·Granted Jul 26, 1988·25 cites·11 claims
- 1966US6282611B1Digital information system, digital audio signal processor and signal converterHITACHI LTD·Filed 1995·Granted Aug 28, 2001·43 cites·37 claims
- 2061US7417933B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted Aug 26, 2008·0 cites·2 claims
- 2161US7042823B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted May 9, 2006·0 cites·3 claims
- 2261US5594680ANoise reduced contactless parallel data transfer device and method thereofHITACHI LTD·Filed 1995·Granted Jan 14, 1997·24 cites·23 claims
- 2361US5001409ASurface metrological apparatusHITACHI LTD·Filed 1988·Granted Mar 19, 1991·12 cites·19 claims
- 2460US6842415B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2003·Granted Jan 11, 2005·1 cites·1 claims
- 2539US4847822AOptical information recording and reproducing apparatus with tracking control by samplingHITACHI LTD·Filed 1987·Granted Jul 11, 1989·4 cites·10 claims
- 2638US2001037431A1Digital information system, digital audio signal processor and signal converterFiled 2001·Application pending·0 cites
- 2736US5086438ASignal generating and receiving apparatuses based on synchronous transfer modeANRITSU CORP·Filed 1990·Granted Feb 4, 1992·12 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Masatoshi Ohtake files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →