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. 22, 1980
Filed:
Oct. 04, 1976
Applicant:
Inventor:
Alan H Cook, Manningtree, GB;
Assignee:
Bexford Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430533 ; 428483 ; 526303 ;
Abstract
Subbing layers in photographic films especially for polyester such as polyethylene terephthalate film supports comprise copolymers of 75 to 90 mole % of vinylidene chloride, 2 to 16 mole % of acrylonitrile or methacrylonitrile or a copolymerizable ester, e.g. methyl acrylate or vinyl acetate, 0.5 to 5 mole % of itaconic acid or a monoalkyl ester of itaconic acid wherein the alkyl group contains 1 to 4 carbon atoms and 3 to 8 mole % of acrylamide, methacrylamide or N-methylolacrylamide.