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. 25, 1989
Filed:
Oct. 30, 1987
Applicant:
Inventors:
Paul R Buckland, St. Albans, GB;
John D Goddard, Middlesex, GB;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430388 ; 430389 ; 430505 ; 430556 ; 430557 ;
Abstract
Novel photographic acetanilide dye-forming couplers comprise a group comprising a stabilizer moiety represented by the formula: ##STR1## wherein R.sup.2 is halogen or alkoxy having 1 to 4 carbon atoms; R.sup.3 is hydrogen, halogen, alkyl or alkoxy; R.sup.4, R.sup.5, R.sup.6 and R.sup.7 are individually alkyl; ##STR2## R.sup.8 and R.sup.9 are individually hydrogen or alkyl; R.sup.10 is hydrogen, alkyl or aryl; and X is a linking group. Such couplers provide advantageous stability in dyes formed from the couplers. These couplers are useful in photographic silver halide materials and processes.