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. 05, 2000
Filed:
Dec. 30, 1998
Wojciech K Slusarek, Rochester, NY (US);
Jerrold N Poslusny, Rochester, NY (US);
Xiqiang K Yang, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one or a 1-aryl-3-alkylpyrazol-5-one ring and represented by formula I: ##STR1## wherein: X represents an aryl, alkyl, alkylamino, or arylamino group; Y can be carbon or sulfur; in is 1 when Y is carbon and 2 when Y is sulfur; R represents a halogen or an alkyl group; and o is 0 to 4, provided that two or more R substituents may join to form one or more additional rings; Z is either (a) an aryl group represented as Ar.sup.3 Q(n) where Q represents n independently selected substituents bonded to the Ar.sup.3 ring; and n is 0 to 5, provided that two or more Q substituents may join to form one or more additional rings or (b) an alkyl group; OAr.sup.4 is an aryloxy group; and P represents p independently selected substituents bonded to the OAr.sup.4 aryloxy ring, provided that P may not be a nitro group ortho to the oxygen atom linking the aryloxy group to the 4-position of the pyrazolone ring; and p is 0 to 5, provided that two or more P substituents may join to form one or more additional rings; provided that X and an R group may join to form an additional ring.