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:
Jan. 01, 1991
Filed:
Nov. 18, 1988
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G11B / ;
U.S. Cl.
CPC ...
430270 ; 430290 ; 430321 ; 430327 ; 430945 ; 4273722 ; 4273831 ; 427162 ;
Abstract
A process for the preparation of an optical recording medium, which comprises forming a thin optical recording film comprising at least one low melting point metal, carbon and hydrogen on a substrate, and heat treating the so formed film on said substrate at a temperature of from 70.degree. to 300.degree. C. for a period of at least 5 seconds. The optical recording medium so prepared has an enhanced recording sensitivity and a prolonged service life.
Kuroiwa, Mitsuyuki. (1991). Process for preparation of optical recording medium (U.S. Patent No. 4981777). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4981777
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile