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:
Jul. 24, 1990
Filed:
Jul. 20, 1989
Applicant:
Inventors:
Klaus Thoese, Wiesbaden, DE;
Karl-Heinz Jung, Wiesbaden, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt/Main, DE;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
430160 ; 428480 ; 428482 ; 430162 ;
Abstract
A polyester film which is provided with a permanent, antistatic coating on one surface, which coating is obtained by treating the biaxially stretch-oriented and heat-set film with an aqueous dispersion, containing at least one copolyester containing sulfonate groups, and at least one salt derived from an amino acid or a protein hydrolysate and having a diazotype reproduction layer on the opposite surface of the film.