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. 31, 1978
Filed:
Sep. 08, 1976
Applicant:
Inventors:
Hans-Joachim Andrascheck, Burgkirchen (Alz), DT;
Rainer Mucke, Burgkirchen (Alz), DT;
Werner Lorz, Burgkirchen (Alz), DT;
Heinz Borchard, Nortorf, DT;
Jurgen Buck, Nortorf, DT;
Herbert Knothe, Neumunster, DT;
Bruno Rybka, Nortorf, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260 / ; 260890 ; 260891 ; 2608 / ; 260899 ; 526317 ; 526321 ; 526330 ; 526344 ;
Abstract
A rigid polyvinyl chloride foil with modified impact resistance and free from plasticizer especially suitable for the manufacture of audio-visual information carriers with stamped spiral grooves from which the information is played back by pressure scanning. The foil is characterized by a special combination of properties such as flow, reduction in length, toughness, surface resistance, elasticity, peak-to-valley height and surface deposit.