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:
Aug. 21, 2001
Filed:
Sep. 11, 2000
Kozaburo Hayashi, Kanuma, JP;
Sony Chemicals Corp., Tokyo, JP;
Abstract
An optical recording medium is provided, in which there are few warps, and no corrosion in the recording film, even when the protective film of the optical recording medium is made thick. The optical recording medium includes a substrate,a recording film,formed on the substrate,and a protective film,formed on the recording film,and recording signals can be reproduced optically from the side of the protective film,The protective film,is a film obtained by curing with UV light irradiation a composition including a cationic polymerizable resin (A) and a cationic polymerization catalyst (B) at a ratio of 100:0.2 to 1.5 by weight. The protective film,has a thickness of 20 to 200 &mgr;m.