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. 24, 1992
Filed:
Sep. 30, 1991
Applicant:
Inventors:
Davor Bedekovic, Biel-Benken, CH;
Jerry L Pool, Greensboro, NC (US);
Brian J Williams, Stockport, GB;
Robert Garner, Bury, GB;
John B Henshall, Manchester, GB;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546 15 ; 549224 ; 549225 ; 549226 ; 548407 ;
Abstract
A process for the preparation of a fluoran compound of the formula ##STR1## wherein R, R.sub.1, R.sub.2 and R.sub.4 are each independently hydrogen, halogen, lower alkyl or lower alkoxy,
Bedekovic, Davor. (1992). Process for the manufacture of fluoran compounds (U.S. Patent No. 5166350). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5166350
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile