Inventor · disambiguated record
Junko Ushiyama
Also filed as: USHIYAMA JUNKO
38 granted patents·8 pending applications·621 citations·filing 1995–2013
98Inventor score
Top patents by PatentIndex Score
46 records- 0198US9275672B2Magnetic head, magnetic recording method and apparatus for controlling magnetic head with spin torque oscillator in a disk driveHITACHI LTD·Filed 2013·Granted Mar 1, 2016·87 cites·18 claims
- 0298US6236635B1Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 1998·Granted May 22, 2001·93 cites·3 claims
- 0397US7012871B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2004·Granted Mar 14, 2006·40 cites·2 claims
- 0494US6842412B2Information recording method and optical disc apparatusHITACHI LTD·Filed 2001·Granted Jan 11, 2005·44 cites·5 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
- 0791US6231945B1Information recording mediumHITACHI LTD·Filed 1998·Granted May 15, 2001·50 cites·27 claims
- 0890US7215261B2DVD recording method and rewritable DVD apparatusHITACHI LG DATA STORAGE INC·Filed 2005·Granted May 8, 2007·9 cites·12 claims
- 0988US7529165B2Test writing method and information recording deviceHITACHI LTD·Filed 2005·Granted May 5, 2009·7 cites·6 claims
- 1087US6709801B2Information recording mediumHITACHI LTD·Filed 2001·Granted Mar 23, 2004·25 cites·6 claims
- 1184US7907490B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·2 cites·1 claims
- 1284US6636477B1Information recording medium and information recording deviceHITACHI LTD·Filed 1999·Granted Oct 21, 2003·37 cites·18 claims
- 1383US6608806B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2002·Granted Aug 19, 2003·8 cites·3 claims
- 1482US7688696B2Information recording method and information recording deviceHITACHI LTD·Filed 2005·Granted Mar 30, 2010·4 cites·12 claims
- 1582US6775226B1Optical recording medium having a plurality of interference layers of different refractive indexHITACHI LTD·Filed 2001·Granted Aug 10, 2004·16 cites·13 claims
- 1678US6703098B2Information recording medium and method for manufacturing information recording mediumHITACHI LTD·Filed 2002·Granted Mar 9, 2004·20 cites·4 claims
- 1777US7009532B2DVD recording method and rewritable DVD apparatusHITACHI LG DATA STORAGE INC·Filed 2004·Granted Mar 7, 2006·9 cites·15 claims
- 1877US6954941B2Information recording medium and information recording deviceHITACHI MAXELL·Filed 2003·Granted Oct 11, 2005·9 cites·5 claims
- 1976US6806030B2Information recording medium and method for manufacturing information recording mediumHITACHI LTD·Filed 2001·Granted Oct 19, 2004·11 cites·9 claims
- 2076US5835469AHigh-density information recording/reproducing methodHITACHI LTD·Filed 1995·Granted Nov 10, 1998·24 cites·10 claims
- 2171US6312779B1Information recording medium and information recording/reproducing apparatusHITACHI LTD·Filed 1999·Granted Nov 6, 2001·40 cites·12 claims
- 2270US7764583B2Information recording method and information recording deviceHITACHI LTD·Filed 2008·Granted Jul 27, 2010·1 cites·3 claims
- 2368US8147941B2Multi-information-layer recording medium and manufacturing processANZAI YUMIKO·Filed 2008·Granted Apr 3, 2012·2 cites·12 claims
- 2468US7911910B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 22, 2011·0 cites·1 claims
- 2568US7907491B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 15, 2011·0 cites·1 claims
- 2668US5886969AHigh-density information recording/reproducing methodHITACHI LTD·Filed 1997·Granted Mar 23, 1999·17 cites·7 claims
- 2767US7852727B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Dec 14, 2010·0 cites·2 claims
- 2867US7684301B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2008·Granted Mar 23, 2010·0 cites·3 claims
- 2966US6436504B2Information recording mediumHITACHI LTD·Filed 2001·Granted Aug 20, 2002·8 cites·20 claims
- 3064US7751293B2Test-write method, information recording method, and information recording apparatusHITACHI LTD·Filed 2004·Granted Jul 6, 2010·4 cites·9 claims
- 3163US7957240B2Test writing method and information recording deviceHITACHI LTD·Filed 2008·Granted Jun 7, 2011·0 cites·4 claims
- 3261US7417933B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted Aug 26, 2008·0 cites·2 claims
- 3361US7042823B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2005·Granted May 9, 2006·0 cites·3 claims
- 3461US7016282B2Information recording method and optical disk unitHITACHI LTD·Filed 2001·Granted Mar 21, 2006·4 cites·8 claims
- 3560US6842415B2Information recording method and apparatus with suppressed mark edge jittersHITACHI LTD·Filed 2003·Granted Jan 11, 2005·1 cites·1 claims
- 3654US6740382B2Information recording mediumHITACHI LTD·Filed 2002·Granted May 25, 2004·1 cites·6 claims
- 3753US2009086602A1Optical information reproducing method, optical information reproducing apparatus and optical information recording mediumHITACHI LTD·Filed 2008·Application pending·0 cites
- 3852US2005180309A1Information recording medium, a method for recording information and a method for manufacturing a mediumHITACHI MAXELL·Filed 2005·Application pending·0 cites
- 3951US8089841B2Reproducing signal measuring method, signal reproducing apparatus, and optical recording mediumHIROTSUNE AKEMI·Filed 2008·Granted Jan 3, 2012·0 cites·16 claims
- 4045US2006087959A1Optical diskHITACHI MAXELL·Filed 2005·Application pending·0 cites
- 4145US2014112114A1Magnetic recording medium and magnetic storage deviceHITACHI LTD·Filed 2013·Application pending·0 cites
- 4244US8085638B2Test-write method, information recording method, and information recording apparatusUSHIYAMA JUNKO·Filed 2010·Granted Dec 27, 2011·0 cites·6 claims
- 4343US2005083812A1Information recording method and information recording mediumFiled 2004·Application pending·0 cites
- 4443US2005064334A1Information recording mediumHITACHI MAXELL·Filed 2004·Application pending·0 cites
- 4542US2011049454A1Semiconductor deviceTERAO MOTOYASU·Filed 2006·Application pending·0 cites
- 4642US2003186164A1Information recording medium, a method for recording information and a method for manufacturing a mediumHITACHI LTD·Filed 2002·Application pending·0 cites
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