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. 23, 1997
Filed:
Sep. 22, 1995
Applicant:
Inventor:
Karl-Heinz Aleksander Starzewski, Bad Vilbel, DE;
Assignee:
AGFA-Gevaert Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ; B29D / ;
U.S. Cl.
CPC ...
252585 ; 264-134 ;
Abstract
A polarizing film of improved blocking position based on polyvinyl alcohol which comprises polyacetylene as the light-polarizing substance is obtained if such a film is heated for at least 10 s at a temperature of between 100.degree. C. and 300.degree. C.