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:
Nov. 23, 1982
Filed:
Nov. 19, 1980
Applicant:
Inventors:
Heinrich Odenwalder, Leverkusen, DE;
Hans Vetter, Cologne, DE;
Wilhelmus Janssens, Aarschot, BE;
Jan Jaeken, Hove, BE;
Assignee:
Agfa-Gevaert Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430218 ; 430222 ; 430223 ; 430559 ;
Abstract
Electron donor compounds of the formula I are effective to reduce non-diffusing reducible color providing compounds which when reduced release under the photographic development conditions a diffusible dye.