The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1993
Filed:
Nov. 05, 1991
Applicant:
Inventors:
Seiro Fujii, Saitama, JP;
Satoshi Jinno, Saitama, JP;
Takamasa Yoshikawa, Saitama, JP;
Takahiro Kobayashi, Saitama, JP;
Masataka Yamaguchi, Saitama, JP;
Nobuyasu Negishi, Saitama, JP;
Nobuaki Onagi, Saitama, JP;
Shinichiro Suzuki, Saitama, JP;
Masayasu Yamaguchi, deceased, late of Saitama, JP;
Kiyohide Ogasawara, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
430321 ; 430945 ; 430495 ; 428 65 ; 369282 ;
Abstract
An optical recording disk in which a transfer layer having grooves made of ultraviolet setting resin is laminated on the surface of a substrate, and in which a recording layer is laminated on the transfer layer, the optical recording disk comprises a peeling protrusion projectingly provided on the inner circumferential side of the transfer layer.