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:
May. 29, 1979
Filed:
Nov. 10, 1977
Applicant:
Inventors:
Richard A Landholm, Canandaigua, NY (US);
Jerry M Robbins, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 2 / ; 96-3 ; 96 561 ; 96 73 ; 96 77 ; 96 99 ;
Abstract
Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a novel releasable azo dye. The dyes are azophenols, or precursors of azophenols, and have electron withdrawing groups in each of the positions ortho to the phenolic hydroxy group.
Landholm, Richard. (1979). Photographic products and processes employing azo dyes, azo (U.S. Patent No. 4156609). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4156609
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile