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:
Apr. 01, 2008
Filed:
Nov. 14, 2004
Applicants:
Nicholas E. Grzeskowiak, Hertford, GB;
Colin J. Gray, Wealdstone, GB;
Inventors:
Nicholas E. Grzeskowiak, Hertford, GB;
Colin J. Gray, Wealdstone, GB;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C 1/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
The use of a red-sensitising trinuclear merocyanine dye and an osmium dopant according to formula (I): [Os(NZ)L]wherein Z is sulphur or oxygen, L is a ligand and r is 0, −1, −2 or −3, in photographic silver halide emulsions for use in photographic materials, result in a reduction and/or prevention of speed gain in the emulsion over time without significant speed loss.