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. 11, 1980
Filed:
May. 08, 1979
Applicant:
Inventors:
Rainer Kitzing, Ingatestone, GB;
John G Scott, Chelmsford, GB;
Terence C Webb, Witham, GB;
Graham Evans, Galleywood, GB;
Assignee:
Ciba-Geigy Aktiengesellschaft, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430510 ; 430376 ; 430467 ; 430513 ; 430517 ; 430518 ; 430522 ; 430558 ;
Abstract
Pyridone dyestuffs of the formula ##STR1## are provided wherein R.sub.1 is hydrogen or an optionally substituted alkyl, aralkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group,
Kitzing, Rainer. (1980). Photographic elements containing amino-substituted hydroxy-pyridones (U.S. Patent No. 4233399). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4233399
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile