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:
Jan. 25, 1977
Filed:
Mar. 26, 1975
Applicant:
Inventors:
Jozef Frans Willems, Wilrijk, BE;
Wilhelmus Janssens, Aarschot, BE;
Assignee:
AGFA-GEVAERT N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 6 / ; 96-9 ; 96 22 ; 96 55 ;
Abstract
A method of producing a colored image by developing a latent silver image obtained by the image-wise photo-exposure of a photosensitive silver halide material, wherein the development is carried out with p-phenylenediamine corresponding to the following general formula: ##STR1## wherein: EACH OF R'.sub.1, R'.sub.2, R'.sub.3, and R'.sub.4 (same or different) represents an alkyl group, in the presence of
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Willems, Jozef. (1977). Formation of azine dyes (U.S. Patent No. 4004926). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4004926
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