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:
Feb. 28, 1989
Filed:
Jun. 09, 1987
Applicant:
Inventors:
Hubertus Psaar, Leverkusen, DE;
Roderich Raue, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546165 ; 546166 ; 548302 ;
Abstract
Compounds of the general formula ##STR1## wherein R represents hydrogen or alkyl and
Psaar, Hubertus. (1989). 1h-imidazo[2,3-a]indol-2-ones as color-forming agents (U.S. Patent No. 4808719). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4808719
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile