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:
Jun. 20, 1995
Filed:
Jul. 02, 1993
Applicant:
Inventors:
Sundaram Krishnamurthy, Rochester, NY (US);
Rakesh Jain, Rochester, NY (US);
Paul P Spara, Rochester, NY (US);
Thomas A Rosiek, Rochester, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430551 ; 430546 ; 430556 ; 430557 ;
Abstract
A photographic element containing a silver halide emulsion layer having associated therewith, a dye-forming coupler and a dye stabilizer which has a melting point of less than 150.degree. C. (and preferably less than 100.degree. C.) and is of the formula: ##STR1## wherein R, m, q, X, Y, r, and (R.sup.7).sub.n are defined in the specification. The element particularly contains a coupler which forms a yellow dye upon reaction with oxidized developer. A method of making stabilizers of the above type using particular solvents and a non-aqueous workup, is also provided.