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:
Sep. 29, 1992
Filed:
Dec. 18, 1990
Shuichi Yanagisawa, Saitama, JP;
Tatsuro Sakai, Saitama, JP;
Yasushi Murata, Saitama, JP;
Fumio Matsui, Saitama, JP;
Yasuo Mitoh, Ibaraki, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
An information recording medium comprising a pair of disk substrates at least one of which has an optical recording layer on one surface thereof, wherein the substrates are bonded to each other by using a silicone type adhesive, directly or by the medium of a spacer, so that the recording layer may be disposed inside of the substrates. Platinum is incorporated in the above-mentioned silicone type adhesive by using a platinum type crosslinking catalyst, without using the conventional benzoyl peroxide type crosslinking catalyst. Accordingly, there is provided the information recording medium excellent in mechanical strength, reliability and durability.