Inventor
ARAKAWA NOBUYUKI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “ARAKAWA NOBUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
14 patentsUS5999513ADec 7, 1999
Optical disc substrate having relatively thicker central supporting portion and relatively thinner recording portion
SONY CORP80 citations96
US7171676B2Jan 30, 2007
Stamper for producing optical recording medium, optical recording medium, and methods of producing the same
SONY CORP23 citations92
US6971116B2Nov 29, 2005
Stamper for producing optical recording medium, optical recording medium, and methods of producing the same
SONY CORP42 citations92
US6210609B1Apr 3, 2001
Method of manufacturing optical recording medium
SONY CORP25 citations92
US6302674B1Oct 16, 2001
Optical disc molding apparatus
SONY CORP15 citations91
US6764737B2Jul 20, 2004
Method of producing information recording medium, production apparatus and information recording medium
SONY CORP18 citations82
US6636476B1Oct 21, 2003
Optical recording medium with a substrate of two different resin layers
SONY CORP9 citations74
US6201783B1Mar 13, 2001
Optical recording medium having substrate of dual transparent layers
SONY CORP7 citations74
US6703100B2Mar 9, 2004
Disk-like recording medium and method for producing the same
SONY CORP8 citations73
US6142761ANov 7, 2000
Optical disc molding apparatus
SONY CORP6 citations72
US5464339ANov 7, 1995
Molding dye for disk substrate
SONY CORP8 citations71
US4931313AJun 5, 1990
Method of forming a protective film for an optical recording medium
SONY CORP5 citations63
US5852329ADec 22, 1998
Optical disc molding device and molding method for optical disc
SONY CORP6 citations59
US6596365B2Jul 22, 2003
Optical recording medium and method for producing the same
SONY CORP0 citations51