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. 21, 2000
Filed:
Jan. 08, 1999
Applicant:
Inventor:
Peter Bergthaller, Bergisch Gladbach, DE;
Assignee:
Agfa Gevaert N.V, , BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430558 ; 430505 ; 430544 ; 430955 ; 430956 ; 430957 ; 430958 ;
Abstract
A color photographic material, the cyan coupler of which is of the formula ##STR1## in which R.sub.11 means an alkyl, aryl, acylamino, alkylcarbamoyl, arylcarbamoyl or a heterocyclic group, R.sub.12 means a group having electron-attracting characteristics, R.sub.13 means a group having electron-attracting characteristics, R.sub.14 means an alkyl or aryl group, R.sub.15 means a divalent linking member having 2 to 4 linking atoms, X means .dbd.O or .dbd.N--SO.sub.2 R.sub.21 and Y means a group eliminable by hydrolytic or intramolecular (nucleophilic) attack, is distinguished by improved processing stability.