P

Inventor

YUZURIHARA HAJIME

JP31 patents
⚠️ This page may combine multiple inventors who share the name “YUZURIHARA HAJIME”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

RICOH KK

28 patents
US6426936B1Jul 30, 2002

Phase-change medium usable in phase-difference tracking

RICOH KK61 citations96
US6177167B1Jan 23, 2001

Optical information recording medium

RICOH KK51 citations96
US6096398AAug 1, 2000

Phase-change optical recording medium

RICOH KK58 citations96
US6841049B2Jan 11, 2005

Optical device substrate film-formation apparatus, optical disk substrate film-formation method, substrate holder manufacture method, substrate holder, optical disk and a phase-change recording type of optical disk

RICOH KK47 citations95
US6827999B2Dec 7, 2004

Optical information recording medium

RICOH KK29 citations92
US6790592B2Sep 14, 2004

Phase-change optical information recording medium

RICOH KK23 citations92
US6391417B1May 21, 2002

Optical information recording medium

RICOH KK36 citations92
US6770346B2Aug 3, 2004

Optical recording medium and recording method

RICOH KK40 citations91
US7507523B2Mar 24, 2009

Optical information recording medium, method of manufacturing the optical information recording medium, and method of and apparatus for recording/reproducing optical information

RICOH KK14 citations84
US6846611B2Jan 25, 2005

Phase-change optical recording medium

RICOH KK17 citations84
US7411887B2Aug 12, 2008

Optical information recording medium

RICOH KK7 citations74
US6914866B2Jul 5, 2005

Optical information recording medium and information recording method and apparatus using the recording medium

RICOH KK9 citations74
US6884487B2Apr 26, 2005

Optical recording medium, recording material, method of producing optical recording medium, and optical recording, reading and rewriting method

RICOH KK8 citations73
US6741545B2May 25, 2004

Phase-change medium usable in phase-difference tracking

RICOH KK6 citations73
US7417930B2Aug 26, 2008

Optical recording method

RICOH KK2 citations63
US7349315B2Mar 25, 2008

Information recording method, information recording device, optical information recording medium, program for recording information and storage medium

RICOH KK2 citations63
US7260044B2Aug 21, 2007

Recording method for a phase-change optical recording medium

RICOH KK3 citations63
US7042831B2May 9, 2006

Optical information recording medium

RICOH KK1 citations63
US7570563B2Aug 4, 2009

Optical recording method of a phase-change optical recording medium having improved recording characteristics and uniformity and optical recording medium and optical recorder used by the method

RICOH KK3 citations62
US7273534B2Sep 25, 2007

Optical device substrate film-formation apparatus, optical disk substrate film-formation method, substrate holder manufacture method, substrate holder, optical disk and a phase-change recording type of optical disk

RICOH KK4 citations62
US7063875B2Jun 20, 2006

Optical recording medium

RICOH KK3 citations62
US6963527B2Nov 8, 2005

Information recording method and optical recording medium therefor

RICOH KK2 citations62
US6958180B2Oct 25, 2005

Phase change optical recording medium

RICOH KK5 citations62
US7414954B2Aug 19, 2008

Optical information recording medium

RICOH KK0 citations52
US7364781B2Apr 29, 2008

Optical recording medium, recording material, method of producing optical recording medium and optical recording, reading and rewriting method

RICOH KK0 citations52
US7362683B2Apr 22, 2008

Optical recording method

RICOH KK0 citations52
US7611762B2Nov 3, 2009

Optical recording medium

RICOH KK0 citations51
US7068591B2Jun 27, 2006

Information recording method and optical recording medium therefor

RICOH KK0 citations51

RICOH COMPNAY LTD

1 patent

TAKEUCHI SHIGEO

1 patent

DEGUCHI HIROSHI

1 patent