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, 1980
Filed:
Aug. 31, 1977
Applicant:
Inventors:
Hans-Heinrich Credner, Hohenschaeftlarn, DE;
Rigobert Otto, Leverkusen, DE;
Karl-Wilhelm Schranz, Odenthal-Hahnenberg, DE;
Assignee:
AGFA-Gevaert, A.G., Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430566 ; 430372 ; 430471 ; 430551 ;
Abstract
An improvement in the prevention color-fog and staining in color-photographic materials is obtained by the inclusion of acylamino substituted hydroquinones derivatives. The compounds can easily be synthesized do not crystalize from their dispersions and are not oxidized to colored by-products during development.
Credner, Hans-Heinrich. (1980). Color photographic materials containing an antistain agent (U.S. Patent No. 4198239). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4198239
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile