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:
Aug. 31, 1999
Filed:
Mar. 26, 1998
Walter T Gurney, Rochester, NY (US);
Franklin C Brayer, Rochester, NY (US);
William J Gamble, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A powdered, uniformly mixed photographic developing composition is prepared with intense mixing of dry photoprocessing chemical components, one of which is a photographic developing agent, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a solution of a binder material is applied in a controlled manner to enable the mixed powder particles to stick together but without leaving much residue in the final composition. With this process, the mixed powder and agglomerates each have desired uniformity in size and chemical composition. The resulting dry uniformly mixed developer composition is highly stable, dissolvable and substantially free of dust. An antioxidant is also applied to the dry uniform mixture during agglomeration to reduce the loss of developing agent activity.