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. 15, 1986
Filed:
Nov. 09, 1984
Applicant:
Inventors:
Assignee:
The Wiggins Teape Group Limited, Buckinghamshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430538 ; 15624411 ; 162135 ; 427 41 ; 428512 ; 428513 ; 430532 ; 430534 ;
Abstract
Polyolefin coated photographic base papers are stabilized by a polymeric hindered amine (Chimassorb 944) having a mean molecular weight above 2500. The stabilizer is highly effective and overcomes a diminution of opacity noted with the use of phosphonate esters of the prior art.
Woodward, Antony. (1986). Photographic polyolefin coated base papers and method of making (U.S. Patent No. 4582785). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4582785
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile