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. 15, 1981
Filed:
Jul. 16, 1979
Applicant:
Inventors:
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
430270 ; 428913 ; 428 64 ; 428520 ; 428688 ; 428699 ; 3461351 ; 430321 ; 430322 ; 369 13 ; 369275 ; 369284 ;
Abstract
The invention relates to an optical recording device having a substrate plate which is provided on at least one side with a first ablative recording layer and a second ablative recording layer provided hereon, the second ablative recording layer having a higher surface energy than the second ablative recording layer. Both recording layers preferably comprise the same common metal, for example tellurium.
Jacobs, Bernardus. (1981). Optical recording device having several ablative recording layers (U.S. Patent No. 4290075). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4290075
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile