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:
May. 07, 1985
Filed:
Apr. 23, 1979
Applicant:
Inventors:
Assignee:
Teldec Telefunken-Decca Schallplatten GmbH, Hamburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ; G06K / ; G11B / ;
U.S. Cl.
CPC ...
428 64 ; 369288 ; 428 65 ; 523174 ;
Abstract
A disc-shaped information carrier produced by thermoplastic deformation comprising a pressed mass including a co-polymer of vinyl chloride having additives incorporated therein. The carrier has hygroscopic properties and relief-like surface portions which are sufficiently yielding to permit pressure scanning.