Inventor · disambiguated record
Akemi Hirotsune
Also filed as: HIROTSUNE AKEMI
70 granted patents·19 pending applications·955 citations·filing 1994–2014
99Inventor score
Top patents by PatentIndex Score
89 records- 0198US6236635B1Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 1998·Granted May 22, 2001·93 cites·3 claims
- 0297US7012871B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2004·Granted Mar 14, 2006·40 cites·2 claims
- 0395US6532034B2Optical disk, optical disk apparatus, and method for writing figuresHITACHI LTD·Filed 2001·Granted Mar 11, 2003·63 cites·4 claims
- 0495US5709978ASupperresolution readout thin film and information recording mediumHITACHI LTD·Filed 1994·Granted Jan 20, 1998·79 cites·21 claims
- 0594US6529467B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Mar 4, 2003·25 cites·5 claims
- 0694US6343056B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2001·Granted Jan 29, 2002·23 cites·8 claims
- 0791US6856589B2Information 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
- 0891US6231945B1Information recording mediumHITACHI LTD·Filed 1998·Granted May 15, 2001·50 cites·27 claims
- 0991US5912104AInformation recording mediumHITACHI LTD·Filed 1997·Granted Jun 15, 1999·59 cites·9 claims
- 1089US5958649AInformation recording medium and information memory apparatusHITACHI LTD·Filed 1996·Granted Sep 28, 1999·50 cites·37 claims
- 1189US5703867AOptical recording medium having a dummy area at leading and/or trailing positions of recording areaHITACHI LTD·Filed 1996·Granted Dec 30, 1997·29 cites·13 claims
- 1285US6340555B1Information recording medium and information recording and reproducing apparatus using the sameHITACHI LTD·Filed 2000·Granted Jan 22, 2002·17 cites·24 claims
- 1385US5882759AInformation recording medium and information memory storageHITACHI LTD·Filed 1997·Granted Mar 16, 1999·45 cites·17 claims
- 1484US7907490B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·2 cites·1 claims
- 1584US6723411B2Information recording medium and method for manufacturing an information recording mediumHITACHI LTD·Filed 2002·Granted Apr 20, 2004·17 cites·12 claims
- 1684US6636477B1Information recording medium and information recording deviceHITACHI LTD·Filed 1999·Granted Oct 21, 2003·37 cites·18 claims
- 1784US6411591B1Optical recording medium and optical memory deviceHITACHI LTD·Filed 1998·Granted Jun 25, 2002·42 cites·12 claims
- 1884US6317408B1Optical storage medium having information of dummy data at leading side or trailing side of user dataHITACHI LTD·Filed 2000·Granted Nov 13, 2001·8 cites·7 claims
- 1983US6608806B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2002·Granted Aug 19, 2003·8 cites·3 claims
- 2081US7349321B2Information reproduction apparatus and information reproduction methodHITACHI LTD·Filed 2004·Granted Mar 25, 2008·15 cites·20 claims
- 2179US7072283B2Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing informationHITACHI LTD·Filed 2004·Granted Jul 4, 2006·8 cites·17 claims
- 2279US6383595B1Information recording mediumHITACHI LTD·Filed 1999·Granted May 7, 2002·33 cites·24 claims
- 2378US6703098B2Information recording medium and method for manufacturing information recording mediumHITACHI LTD·Filed 2002·Granted Mar 9, 2004·20 cites·4 claims
- 2477US6954941B2Information recording medium and information recording deviceHITACHI MAXELL·Filed 2003·Granted Oct 11, 2005·9 cites·5 claims
- 2577US6854126B2Information recording medium with SiO2-In2O3-SnO2-ZnS protective layerHITACHI LTD·Filed 2003·Granted Feb 8, 2005·11 cites·8 claims
- 2676US8592060B2Perpendicular magnetic recording media having low medium noise and systems using the sameTAMAI ICHIRO·Filed 2010·Granted Nov 26, 2013·4 cites·23 claims
- 2775US5878021AInformation recording medium, information recording method and information recording apparatusHITACHI LT·Filed 1997·Granted Mar 2, 1999·14 cites·22 claims
- 2873US7584150B2Recording method, recording medium, and recording systemHITACHI LTD·Filed 2002·Granted Sep 1, 2009·8 cites·16 claims
- 2972US9117477B2Perpendicular magnetic recording media having novel seed layerHGST Netherlands BV·Filed 2013·Granted Aug 25, 2015·2 cites·19 claims
- 3071US6312779B1Information recording medium and information recording/reproducing apparatusHITACHI LTD·Filed 1999·Granted Nov 6, 2001·40 cites·12 claims
- 3171US6132932AInformation recording medium and information recording and reproducing apparatus using the sameHITACHI LTD·Filed 1997·Granted Oct 17, 2000·18 cites·5 claims
- 3271US5846625AOptical recording medium and information processing apparatus used thereforHITACHI LTD·Filed 1995·Granted Dec 8, 1998·23 cites·53 claims
- 3370US7821884B2Information recording and retrieval method, and its apparatusHITACHI LTD·Filed 2007·Granted Oct 26, 2010·1 cites·20 claims
- 3468US7911910B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 22, 2011·0 cites·1 claims
- 3568US7907491B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·0 cites·1 claims
- 3667US7911930B2Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing informationHITACHI LTD·Filed 2009·Granted Mar 22, 2011·0 cites·5 claims
- 3767US7852727B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Dec 14, 2010·0 cites·2 claims
- 3867US7684301B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 23, 2010·0 cites·3 claims
- 3967US6956806B2Information recording medium, information recording method and information recording apparatusHITACHI MAXELL·Filed 2003·Granted Oct 18, 2005·2 cites·1 claims
- 4066US6650608B2Information recording medium, information recording method and information recording apparatusHITACHI LTD·Filed 2002·Granted Nov 18, 2003·2 cites·2 claims
- 4166US6519219B2Information recording method for recording a recording signal and a dummy signal added to a leading or/and trailing side of the recording signalHITACHI LTD·Filed 2002·Granted Feb 11, 2003·2 cites·6 claims
- 4266US6487156B2Information recording apparatus for recording a recording signal and a dummy signal added to a leading and/or trailing side of the recording signalHITACHI LTD·Filed 2002·Granted Nov 26, 2002·2 cites·4 claims
- 4366US6483794B2Information recording method for recording a recording signal and a dummy signal added to a leading or/and trailing side of the recording signalHITACHI LTD·Filed 2002·Granted Nov 19, 2002·2 cites·6 claims
- 4466US6480452B2Information recording medium, information recording method and information recording apparatusHITACHI LTD·Filed 2002·Granted Nov 12, 2002·2 cites·6 claims
- 4566US6436504B2Information recording mediumHITACHI LTD·Filed 2001·Granted Aug 20, 2002·8 cites·20 claims
- 4664US7570575B2Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing informationHITACHI LTD·Filed 2008·Granted Aug 4, 2009·0 cites·4 claims
- 4762US2009285071A1Recording method, recording medium, and recording systemHITACHI LTD·Filed 2009·Application pending·0 cites
- 4861US7417933B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted Aug 26, 2008·0 cites·2 claims
- 4961US7068587B2Method for reproducing information data from a recording medium having dummy data shifted at randomHITACHI MAXELL·Filed 2005·Granted Jun 27, 2006·0 cites·1 claims
- 5061US7042823B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted May 9, 2006·0 cites·3 claims
Showing the top 50 of 89 patent records by PatentIndex Score.
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