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. 31, 1988
Filed:
Jul. 08, 1986
Christian C Van de Sande, Belsele, BE;
Piet Kok, Ghent, BE;
AGFA-Gevaert, N.V., Mortsel, BE;
Abstract
In a dye diffusion transfer process the use of a photosensitive element incorporating hydroquinone-type or quinone-type redox-controlled yellow dye-releasing azo compounds containing in the releasable dye moiety a pyrazolone group carrying alkyl, aryl, aralkyl, hetaryl, or heterocyclyl on the 1-position and acylamido, alkylureido, cycloalkylureido, or arylureido on the 3-position, for improved color reproduction of the dye diffusion transfer image as a result of development and a redox-reaction. The invention also provides photosensitive elements incorporating such dye-releasing compounds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile