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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.:

US 5284739 B1

PDFFull Text
Date of Patent:
Feb. 08, 1994

Filed:

Nov. 10, 1992

Photographic silver halide color material having incorporated therein a

Applicant:
Inventors:

David Clarke, Watford, GB;

John D Goddard, Pinner, GB;

Paul L Stanley, Harrow, GB;

Nigel E Milner, Watford, GB;

Assignee:

Eastman Kodak Company, Rochester, NY (US);

Attorney:

Stewart; Gordon M.

Primary Examiner:

Charles L Bowers, Jr

Assistant Examiner:

Geraldine Letscher

Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430504 ; 430372 ; 430551 ; 430546 ; 430380 ; 430440 ; 430566 ; 430264 ;
Abstract

Photographic materials having incorporated sulphonyhdrazide color developing agents. Such photographic materials have at least two color-forming units, each of which has a silver halide emulsion layer and a photographic coupler. A ballasted heterocyclic sulphonhydrazide color developing agent is present in the material in droplets of a high boiling point solvent. A method of forming a photographic color image using such materials is also provided.

Find Patent Forward Citations

Clarke, David. (1994). Photographic silver halide color material having incorporated therein a (U.S. Patent No. 5284739). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5284739

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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