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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ciurca, Jr.; Samuel J.
Address:
Rochester, NY
No. of patents:
5
Patents:




Patent Number Title Of Patent Date Issued
T998014 Thiazolyl couplers, coupler compositions and photographic elements suited to forming integral so September 2, 1980
Ballasted 1-hydroxy-2-naphthamide couplers which are N-substituted with a thiazolyl group that is in turn substituted with a phenyl group are disclosed as well as compositions and photographic elements containing these couplers in coupler solvents. Preferred couplers are those of the
4178183 Thiazolyl coupler compositions and photographic elements suited to forming integral sound tracks December 11, 1979
Ballasted 1-hydroxy-2-naphthamide couplers which are N-substituted with a thiazolyl group that is in turn substituted with a phenyl group are disclosed as well as compositions and photographic elements containing these couplers in coupler solvents. The coupler solvent particles are c
4126461 Black-and-white photographic elements and processes November 21, 1978
Photographic elements for providing black-and-white images contain a silver halide emulsion having associated therewith a non-diffusible resorcinol coupler and a color developing agent or a precursor of a color developing agent. The elements can be processed by simple alkaline activation
4124398 Thiyl bleaching agents for photographic processes November 7, 1978
Disclosed herein are aqueous and nonaqueous photographic bleaching solutions and radiation sensitive elements comprising a thiyl bleaching agent precursor having the formula ##STR1## wherein Z comprises the nonmetallic atoms necessary to complete a 5 to 7 member heterocyclic ring
4088488 Photographic elements containing nitroxyl radical oxidants May 9, 1978
Stable nitroxyl radicals are useful as oxidants in photographic elements or film units.


 
 
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