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:
Mar. 21, 1995
Filed:
Oct. 29, 1993
Applicant:
Inventors:
Sundaram Krishnamurthy, Rochester, NY (US);
Stanley W Cowan, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430384 ; 430385 ; 430386 ; 430387 ; 430552 ; 430553 ; 430554 ; 430555 ;
Abstract
Novel photographic silver halide materials contain dye-forming couplers represented by formula (I): ##STR1## wherein K is a coupler moiety based on pyrazolone, phenol, naphthol, enamine, or acylacetamide to which the ballast group is attached, are useful in photographic materials and processes. The containing the couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, contrast, and development speed.
Quick Actions:
Krishnamurthy, Sundaram. (1995). Photographic couplers having a ballast containing a sulfone or sulfoxide (U.S. Patent No. 5399467). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5399467
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile