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:
Mar. 01, 1988
Filed:
Apr. 01, 1986
Applicant:
Inventors:
David Rowland, Knutsford, GB;
Michael E Dale, Macclesfield, GB;
Geoffrey E Ficken, Wilmslow, GB;
William E Long, Wilmslow, GB;
Andrew W Yates, Knutsford, GB;
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430565 ; 430233 ; 430356 ; 430611 ; 430965 ; 544263 ;
Abstract
Tetra-aza indene compounds of the formula ##STR1## wherein R.sub.1 is alkyl or a ring system and R.sub.2 and R.sub.3 are hydrogen or alkyl. These compounds are of use as image toners in photographic materials.
Rowland, David. (1988). Tetra-aza indene compounds (U.S. Patent No. 4728601). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4728601
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile