Inventor
ANZAI YUMIKO
JP54 patents
⚠️ This page may combine multiple inventors who share the name “ANZAI YUMIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
37 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
US5753413AMay 19, 1998
Rewritable medium for recording information in which the atomic arrangement is changed without the shape being changed and the optical constant is changed
HITACHI LTD67 citations96
US6532034B2Mar 11, 2003
Optical disk, optical disk apparatus, and method for writing figures
HITACHI LTD63 citations95
US5871881AFeb 16, 1999
Multilayer optical information medium
HITACHI LTD71 citations95
US6703098B2Mar 9, 2004
Information recording medium and method for manufacturing information recording medium
HITACHI LTD20 citations93
US6709801B2Mar 23, 2004
Information recording medium
HITACHI LTD25 citations92
US6636477B1Oct 21, 2003
Information recording medium and information recording device
HITACHI LTD37 citations92
US5411430AMay 2, 1995
Scanning optical device and method for making a hybrid scanning lens used therefor
HITACHI LTD31 citations92
US5330880AJul 19, 1994
Process for producing optical disks
HITACHI LTD35 citations92
US6312779B1Nov 6, 2001
Information recording medium and information recording/reproducing apparatus
HITACHI LTD40 citations91
US6723411B2Apr 20, 2004
Information recording medium and method for manufacturing an information recording medium
HITACHI LTD17 citations84
US6659759B2Dec 9, 2003
Apparatus for the production of a recording medium
HITACHI LTD17 citations84
US7680025B2Mar 16, 2010
Optical information recording medium, reproducing method thereof, and manufacturing method thereof
HITACHI LTD11 citations83
US6608806B2Aug 19, 2003
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD8 citations82
US6485808B2Nov 26, 2002
Method of manufacturing an optical disk substrate, an apparatus of manufacturing an optical disk and an optical disk substrate
HITACHI LTD14 citations81
US7907490B2Mar 15, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD2 citations74
US6854126B2Feb 8, 2005
Information recording medium with SiO2-In2O3-SnO2-ZnS protective layer
HITACHI LTD11 citations74
US6436504B2Aug 20, 2002
Information recording medium
HITACHI LTD8 citations74
US5321672AJun 14, 1994
Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains
HITACHI LTD11 citations74
US6806030B2Oct 19, 2004
Information recording medium and method for manufacturing information recording medium
HITACHI LTD11 citations73
US7813258B2Oct 12, 2010
Optical information recording medium and optical information reproducing method
HITACHI LTD2 citations63
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
US5179546AJan 12, 1993
Magneto-optical disk and process for manufacturing the same
HITACHI LTD5 citations63
US7911910B2Mar 22, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7907491B2Mar 15, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7852727B2Dec 14, 2010
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7746757B2Jun 29, 2010
Optical disc medium and optical disc device
HITACHI LTD0 citations52
US7684301B2Mar 23, 2010
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7417933B2Aug 26, 2008
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7042823B2May 9, 2006
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7852740B2Dec 14, 2010
Information recording medium storing system and storing case
HITACHI LTD0 citations51
MINEMURA HIROYUKI
3 patentsHITACHI MAXELL
2 patentsHITACHI HIGH TECH CORP
2 patentsHIRATA KOJI
2 patentsHITACHI LG DATA STORAGE INC
2 patentsANZAI YUMIKO
1 patentHITACHI-LG DATA STORAGE INC
1 patentShowing the top 50 of 54 patents by PatentIndex Score.