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:
Sep. 19, 1978
Filed:
Mar. 30, 1977
Applicant:
Inventors:
Graham Evans, Chelmsford, GB;
Mario Fryberg, Praroman-le-Mouret, CH;
Thomas Stauner, Maryl, CH;
Paul Tschopp, Dudingen, CH;
David G Leppard, Marly, CH;
Assignee:
Ciba-Geigy AG, Basle, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 563 ; 96 565 ; 9610 / ; 2603 / ;
Abstract
Color photographic material is provided which contains at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## wherein G is the radical of a yellow coupler which is bonded to the heterocyclic ring by means of the active methylene group, Z is --CO-- or --SO.sub.2 --, M is hydrogen if Z is --CO--; or a substituent and R is hydrogen or a substituent.