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:
Apr. 11, 1989
Filed:
Oct. 15, 1987
Applicant:
Inventors:
Heinz-Otto Merz, Bramsche, DE;
Alois-Bernhard Kerkhoff, Bissendorf, DE;
Wolfgang Storbeck, Belm, DE;
Assignee:
Felix Schoeller, Jr. GmbH & Co. KG, Osnabruck, DE;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; D21H / ; D21H / ; G03C / ;
U.S. Cl.
CPC ...
428328 ; 4284788 ; 428513 ; 428414 ; 430532 ; 430536 ; 430538 ; 162135 ;
Abstract
A waterproof, polyolefin coated paper support for photographic coatings is disclosed, wherein the paper base contains an alkylketene dimer as a hydrophobizing sizing agent. The alkylketene dimer consists to the greater part of behenyl ketene and contains no more than 40% residues originating from alkylketenes having chains shorter than C.sub.20 -alkyl.