Inventor
HIROTSUNE AKEMI
JP70 patents
⚠️ This page may combine multiple inventors who share the name “HIROTSUNE AKEMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
44 patentsUS6236635B1May 22, 2001
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD93 citations99
US7012871B2Mar 14, 2006
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD40 citations96
US6529467B2Mar 4, 2003
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD25 citations96
US6343056B2Jan 29, 2002
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD23 citations96
US6231945B1May 15, 2001
Information recording medium
HITACHI LTD50 citations96
US5958649ASep 28, 1999
Information recording medium and information memory apparatus
HITACHI LTD50 citations96
US5912104AJun 15, 1999
Information recording medium
HITACHI LTD59 citations96
US5709978AJan 20, 1998
Supperresolution readout thin film and information recording medium
HITACHI LTD79 citations96
US5703867ADec 30, 1997
Optical recording medium having a dummy area at leading and/or trailing positions of recording area
HITACHI LTD29 citations96
US6532034B2Mar 11, 2003
Optical disk, optical disk apparatus, and method for writing figures
HITACHI LTD63 citations95
US6856589B2Feb 15, 2005
Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing information
HITACHI LTD20 citations93
US6703098B2Mar 9, 2004
Information recording medium and method for manufacturing information recording medium
HITACHI LTD20 citations93
US5882759AMar 16, 1999
Information recording medium and information memory storage
HITACHI LTD45 citations93
US5846625ADec 8, 1998
Optical recording medium and information processing apparatus used therefor
HITACHI LTD23 citations93
US6636477B1Oct 21, 2003
Information recording medium and information recording device
HITACHI LTD37 citations92
US6411591B1Jun 25, 2002
Optical recording medium and optical memory device
HITACHI LTD42 citations92
US6383595B1May 7, 2002
Information recording medium
HITACHI LTD33 citations92
US6340555B1Jan 22, 2002
Information recording medium and information recording and reproducing apparatus using the same
HITACHI LTD17 citations92
US6132932AOct 17, 2000
Information recording medium and information recording and reproducing apparatus using the same
HITACHI LTD18 citations92
US6312779B1Nov 6, 2001
Information recording medium and information recording/reproducing apparatus
HITACHI LTD40 citations91
US7349321B2Mar 25, 2008
Information reproduction apparatus and information reproduction method
HITACHI LTD15 citations84
US6723411B2Apr 20, 2004
Information recording medium and method for manufacturing an information recording medium
HITACHI LTD17 citations84
US7584150B2Sep 1, 2009
Recording method, recording medium, and recording system
HITACHI LTD8 citations83
US6608806B2Aug 19, 2003
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD8 citations82
US6317408B1Nov 13, 2001
Optical storage medium having information of dummy data at leading side or trailing side of user data
HITACHI LTD8 citations82
US7907490B2Mar 15, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD2 citations74
US7072283B2Jul 4, 2006
Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing information
HITACHI LTD8 citations74
US6854126B2Feb 8, 2005
Information recording medium with SiO2-In2O3-SnO2-ZnS protective layer
HITACHI LTD11 citations74
US6650608B2Nov 18, 2003
Information recording medium, information recording method and information recording apparatus
HITACHI LTD2 citations74
US6519219B2Feb 11, 2003
Information recording method for recording a recording signal and a dummy signal added to a leading or/and trailing side of the recording signal
HITACHI LTD2 citations74
US6487156B2Nov 26, 2002
Information recording apparatus for recording a recording signal and a dummy signal added to a leading and/or trailing side of the recording signal
HITACHI LTD2 citations74
US6483794B2Nov 19, 2002
Information recording method for recording a recording signal and a dummy signal added to a leading or/and trailing side of the recording signal
HITACHI LTD2 citations74
US6480452B2Nov 12, 2002
Information recording medium, information recording method and information recording apparatus
HITACHI LTD2 citations74
US6436504B2Aug 20, 2002
Information recording medium
HITACHI LTD8 citations74
US6232035B1May 15, 2001
Information recording medium and information memory apparatus
HITACHI LTD8 citations74
US6111850AAug 29, 2000
Optical recording method for recording dummy data at leading and trailing sides of user data
HITACHI LTD2 citations74
US5974023AOct 26, 1999
Information recording medium, information recording method and information recording apparatus
HITACHI LTD4 citations74
US7041430B2May 9, 2006
Information recording media, manufacturing technique and information recording method
HITACHI LTD5 citations63
US6842415B2Jan 11, 2005
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD1 citations63
US6740382B2May 25, 2004
Information recording medium
HITACHI LTD1 citations63
US6480451B2Nov 12, 2002
Information recording medium, information recording method and information recording apparatus
HITACHI LTD1 citations63
US6385153B2May 7, 2002
Information recording medium, information recording method and information recording apparatus
HITACHI LTD0 citations63
US7911930B2Mar 22, 2011
Information recording media, a method for recording/reproducing information, an apparatus for recording/reproducing information
HITACHI LTD0 citations52
US7911910B2Mar 22, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
HITACHI MAXELL
3 patentsUS6956806B2Oct 18, 2005
Information recording medium, information recording method and information recording apparatus
HITACHI MAXELL2 citations74
US6954941B2Oct 11, 2005
Information recording medium and information recording device
HITACHI MAXELL9 citations74
US7068587B2Jun 27, 2006
Method for reproducing information data from a recording medium having dummy data shifted at random
HITACHI MAXELL0 citations63
HITACHI LT
1 patentHGST Netherlands BV
1 patentTAMAI ICHIRO
1 patentShowing the top 50 of 70 patents by PatentIndex Score.