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:
Dec. 19, 2000
Filed:
Dec. 22, 1998
Applicant:
Inventors:
Ping-Wah Tang, Yorktown Heights, NY (US);
Robert G Cameron, Spencerport, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430557 ; 430543 ;
Abstract
A color photographic element includes a support, a silver halide emulsion layer, and associated therewith a yellow dye-forming coupler having the formula ##STR1## wherein R.sup.1 represents a tertiary alkyl group containing 4 to about 20 carbon atoms; R.sup.2 represents an alkyl, aryl, or heterocyclic group; X represents hydrogen or a substituent; Y and Z each independently represent a group consisting of those substituents having a Hammett sigma.sub.para constant greater than zero; and m and n is each 1 to 4.