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. 24, 1985
Filed:
Dec. 20, 1979
Applicant:
Inventors:
Leonard P Fox, Cherry Hill, NJ (US);
Pabitra Datta, Cranbury, NJ (US);
Dennis L Matthies, Princeton, NJ (US);
Hirohisa Kawamoto, Princeton, NJ (US);
Assignee:
RCA Corporation, Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369276 ; 369126 ; 358342 ; 358344 ; 252511 ;
Abstract
A video disc comprises a grooved disc having video information in the form of a surface relief pattern within the groove, the disc made from a plastic material containing finely divided conductive particles such that the bulk resistivity at 900 MHz is less than 500 ohm-centimeters.