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:
Oct. 23, 1990
Filed:
Apr. 16, 1987
Applicant:
Inventors:
Hiroyuki Imataki, Kawasaki, JP;
Mizuho Hiraoka, Isehara, JP;
Sachiko Ichikawa, Sagamihara, JP;
Hitoshi Yoshino, Atsugi, JP;
Yoshihiro Ogawa, Sagamihara, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; B41M / ; G11B / ;
U.S. Cl.
CPC ...
430 11 ; 430 14 ; 430273 ; 430275 ; 430276 ; 430945 ; 3461351 ; 369277 ; 369284 ;
Abstract
An optical recording medium for writing and reading information by use of a beam of light comprises an optical recording layer comprising a light-reflective layer and a light-absorptive layer having been preformatted in the form of grooves.
Imataki, Hiroyuki. (1990). Optical recording medium (U.S. Patent No. 4965153). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4965153
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile