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. 07, 1990
Filed:
Dec. 27, 1988
Applicant:
Inventors:
Seiichi Shingaki, Hadano, JP;
Kazuyoshi Nagao, Yokohama, JP;
Yasuo Takahashi, Tokyo, JP;
Takashi Noma, Atsugi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 64 ; 428 65 ; 428209 ; 428433 ; 428457 ; 428913 ; 369284 ; 369288 ; 346 / ; 3461351 ; 430945 ;
Abstract
A vitreous film containing, e.g., 30-90 wt. % of Sn, 1-20 wt. % of P, 0.1-20 wt. % of Pb, 2-30 wt. % of 0 and 5-35 wt. % of F is formed by vapor deposition on a substrate such as glass, metal, plastic or ceramic. A light-absorbing substance can be incorporated in the vitreous film to provide a recording layer for a heat-mode optical recording medium capable of causing decoloration or formation of pits on irradiation with a laser beam.
Shingaki, Seiichi. (1990). Vitreous film and heat-mode optical recording medium using same (U.S. Patent No. 4946724). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4946724
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