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:
Nov. 29, 1977
Filed:
May. 05, 1975
Applicant:
Inventors:
Ronald F Cieciuch, Newton, MA (US);
Roberta R Luhowy, Newton, MA (US);
Frank A Meneghini, Arlington, MA (US);
Howard G Rogers, Weston, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
96-3 ; 96 2 / ; 96 72 ; 96 73 ; 96 74 ; 96 77 ;
Abstract
A silver ion scavenger layer is employed between adjacent silver halide strata to enhance color separation in multicolor photographic images prepared by processes which utilize the imagewise distribution of silver ions and/or soluble silver complex made available during development to liberate a corresponding imagewise distribution of dye or dye intermediate from a color-providing compound.