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. 15, 1985
Filed:
Jan. 14, 1983
Applicant:
Inventors:
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430275 ; 430271 ; 430945 ; 346 / ; 3461351 ; 428432 ; 428446 ; 428698 ;
Abstract
Optical recording element comprising a transparent supporting plate which on one side has successively a recording layer of preferably a ferrite, an optional transparent intermediate layer and a reflecting optical structure of reflection areas which are situated alternately at a high level and at a lower level and which can be read optically.
Peeters, Winfried. (1985). Optical recording element (U.S. Patent No. 4493887). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4493887
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile