Inventor · disambiguated record
Takeshi Maeda
Also filed as: MAEDA TAKESHI · SAITO ATSUSHI · TSUNODA YOSHITO · YONEZAWA SEIJI
232 granted patents·33 pending applications·6,034 citations·filing 1976–2022
99Inventor score
Top patents by PatentIndex Score
265 records- 0199US4949331AApparatus and record carrier for optical disc memory with correction pattern and master disc cutting apparatusHITACHI LTD·Filed 1986·Granted Aug 14, 1990·128 cites·13 claims
- 0299US4866692AMethod and apparatus for information recording and reproduction of a pit-shape-forming optical recording typeHITACHI LTD·Filed 1987·Granted Sep 12, 1989·153 cites·18 claims
- 0398US6069870AInformation recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatusHITACHI LTD·Filed 1997·Granted May 30, 2000·140 cites·17 claims
- 0498US5414451AThree-dimensional recording and reproducing apparatusHITACHI LTD·Filed 1992·Granted May 9, 1995·141 cites·12 claims
- 0598US5377178AData recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronizationHITACHI LTD·Filed 1992·Granted Dec 27, 1994·198 cites·38 claims
- 0698US5333126AInformation recording method and optical disk apparatus using sameHITACHI LTD·Filed 1993·Granted Jul 26, 1994·144 cites·20 claims
- 0798US4866688AComposite tracking servo system for optical disc apparatus with track offset correctionHITACHI LTD·Filed 1986·Granted Sep 12, 1989·111 cites·20 claims
- 0897US7432897B2Liquid crystal display device for displaying video dataHITACHI LTD·Filed 2005·Granted Oct 7, 2008·32 cites·11 claims
- 0997US5732061ARecording method using trial write test patternHITACHI LTD·Filed 1996·Granted Mar 24, 1998·114 cites·25 claims
- 1097US5642343AMagnetooptic disc apparatus and recording mediumHITACHI LTD·Filed 1992·Granted Jun 24, 1997·117 cites·17 claims
- 1197US5418770AMethod of and apparatus for correcting edge interval of pit in optical recording/read-out apparatusHITACHI LTD·Filed 1991·Granted May 23, 1995·120 cites·16 claims
- 1297US4866687AOptical disc access method and optical disk storage using coarse and fine actuatorsHITACHI LTD·Filed 1988·Granted Sep 12, 1989·100 cites·12 claims
- 1397US4663751AOptical information processor for compensating offsetHITACHI LTD·Filed 1983·Granted May 5, 1987·58 cites·8 claims
- 1497US4085423AInformation reproducing apparatus with plural beam readoutHITACHI LTD·Filed 1976·Granted Apr 18, 1978·74 cites·14 claims
- 1596US7283439B2Optical disk apparatus using mechanism for controlling spherical aberrationHITACHI LTD·Filed 2005·Granted Oct 16, 2007·25 cites·7 claims
- 1696US7113163B2Liquid crystal display apparatusHITACHI VIDEO & INF SYST·Filed 2001·Granted Sep 26, 2006·85 cites·8 claims
- 1796US6850214B2Liquid crystal display device for displaying video dataHITACHI LTD·Filed 2001·Granted Feb 1, 2005·96 cites·14 claims
- 1896US4901325ASemiconductor laser deviceHITACHI LTD·Filed 1988·Granted Feb 13, 1990·81 cites·19 claims
- 1995US6925040B1Information recording method, information recording medium and information recording apparatusHITACHI LTD·Filed 2000·Granted Aug 2, 2005·33 cites·9 claims
- 2095US6604021B2Communication robotATR ADVANCED TELECOMM RES INST·Filed 2001·Granted Aug 5, 2003·307 cites·19 claims
- 2195US5614938AThree-dimensional recording and reproducing apparatusHITACHI LTD·Filed 1995·Granted Mar 25, 1997·91 cites·5 claims
- 2295US5590111AMethod of controlling recording of optical recordsHITACHI LTD·Filed 1993·Granted Dec 31, 1996·73 cites·10 claims
- 2395US5513165AMethod for controlling the farm of a magnetic domain of a magneto-optical disk using pre-write testingHITACHI LTD·Filed 1993·Granted Apr 30, 1996·90 cites·23 claims
- 2495US5255261AInformation recording diskHITACHI MAXELL·Filed 1990·Granted Oct 19, 1993·94 cites·4 claims
- 2595US4646103AOptical recording methodHITACHI LTD·Filed 1986·Granted Feb 24, 1987·63 cites·4 claims
- 2695US4450547AFocal position detecting optical apparatusHITACHI LTD·Filed 1981·Granted May 22, 1984·53 cites·20 claims
- 2794US7492688B2Highly adaptive recording method and optical recording apparatusHITACHI LTD·Filed 2008·Granted Feb 17, 2009·10 cites·3 claims
- 2894US4199820ARandom access storage apparatus with a movable recording mediumHITACHI LTD·Filed 1978·Granted Apr 22, 1980·46 cites·7 claims
- 2993US7164415B2Display controller and display device provided therewithHITACHI LTD·Filed 2002·Granted Jan 16, 2007·65 cites·20 claims
- 3093US6160784ARecording a mark with the rising and falling edges varied based on previously recorded control dataHITACHI LTD·Filed 1999·Granted Dec 12, 2000·89 cites·13 claims
- 3193US5703855AOptical disk apparatus and recording and reading method for an optical disk using the sameHITACHI LTD·Filed 1994·Granted Dec 30, 1997·61 cites·7 claims
- 3293US4969137AOptical recording and reproducing apparatus having a multi-spot positioning control mechanismHITACHI LTD·Filed 1988·Granted Nov 6, 1990·52 cites·24 claims
- 3393US4725721AAutofocusing control systemHITACHI LTD·Filed 1985·Granted Feb 16, 1988·53 cites·13 claims
- 3492US6377537B1Information recording medium with expanded information recording capabilityHITACHI LTD·Filed 1999·Granted Apr 23, 2002·43 cites·4 claims
- 3592US5848045AMethod for recording and reading an optical diskHITACHI LTD·Filed 1997·Granted Dec 8, 1998·70 cites·14 claims
- 3691US7489610B2Highly adaptive recording method and optical recording apparatusHITACHI LTD·Filed 2008·Granted Feb 10, 2009·7 cites·3 claims
- 3791US7012875B2Optical disk apparatus using focal shift signals to control spherical aberrationHITACHI LTD·Filed 2001·Granted Mar 14, 2006·27 cites·7 claims
- 3891US6856589B2Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing informationHITACHI LTD·Filed 2001·Granted Feb 15, 2005·20 cites·5 claims
- 3991US6353435B2Liquid crystal display control apparatus and liquid crystal display apparatusHITACHI LTD·Filed 1998·Granted Mar 5, 2002·96 cites·17 claims
- 4091US5062091AMagneto-optical recording method and apparatus capable of overwriting data using a radiation beamHITACHI LTD·Filed 1989·Granted Oct 29, 1991·44 cites·14 claims
- 4191US4961182AInformation retrieving system with level clampingHITACHI LTD·Filed 1988·Granted Oct 2, 1990·43 cites·73 claims
- 4291US4835759AMethod and apparatus for compensating variation of read data in an optical data storageHITACHI LTD·Filed 1986·Granted May 30, 1989·43 cites·5 claims
- 4390US6801178B2Liquid crystal driving device for controlling a liquid crystal panel and liquid crystal display apparatusHITACHI LTD·Filed 2001·Granted Oct 5, 2004·49 cites·28 claims
- 4490US5457666ALight modulation method for forming a mark in magneto-optical recording systemHITACHI LTD·Filed 1993·Granted Oct 10, 1995·53 cites·25 claims
- 4590US5414689AOptical information recording/reproducing apparatus using pit edge recording systemHITACHI LTD·Filed 1991·Granted May 9, 1995·45 cites·81 claims
- 4690US4607358AOptical memory apparatusHITACHI LTD·Filed 1985·Granted Aug 19, 1986·55 cites·23 claims
- 4789US7918649B2Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaftNTN TOYO BEARING CO LTD·Filed 2004·Granted Apr 5, 2011·29 cites·21 claims
- 4889US7486603B2Highly adaptive recording method and optical recording apparatusHITACHI LTD·Filed 2008·Granted Feb 3, 2009·5 cites·3 claims
- 4989US7471605B2Highly adaptive recording method and optical recording apparatusHITACHI LTD·Filed 2004·Granted Dec 30, 2008·15 cites·2 claims
- 5089US6368749B1Active substances, electrodes, nonaqueous electrolyte secondary cells, and a process for fabricating the active substancesSANYO ELECTRIC CO·Filed 2000·Granted Apr 9, 2002·36 cites·14 claims
Showing the top 50 of 265 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →