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:
Dec. 30, 1980
Filed:
Sep. 19, 1977
Applicant:
Inventors:
Allen Bloom, East Windsor, NJ (US);
Alfred Bartolini, Trenton, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
3461351 ;
Abstract
An ablative recording medium comprises a substrate coated with a light reflecting layer which in turn is coated with a light absorptive layer of di-indeno[1,2,3-cd:1',2',3'-lm]perylene. During recording, portions of the light absorptive layer are ablated by a modulated focussed light beam, thereby exposing portions of the reflecting layer. Video information is recorded as a reflective-antireflective pattern.
Bloom, Allen. (1980). Ablative optical recording medium (U.S. Patent No. 4242689). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4242689
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