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. 02, 1993
Filed:
Jul. 15, 1991
Applicant:
Inventors:
Paul P Merkel, Rochester, NY (US);
Edward Schofield, Penfield, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430546 ; 430558 ; 430551 ; 430372 ;
Abstract
Photographic coupler compositions comprise a pyrazolotriazole magenta dye-forming coupler and an performance-improving amount of a carbonamide compound. Improved performance is indicated by increased photographic speed, improved light stability of the resulting magenta dye and/or desired hypsochromic hue shifts in the resulting magenta dye. Color photographic materials and methods employ the coupler compositions.