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. 31, 1981
Filed:
Jan. 16, 1980
Applicant:
Inventor:
Graham Whittaker, Runcorn, GB;
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546345 ; 546346 ;
Abstract
Side-chain fluorination of 3-methylpyridine is carried out by reaction with hydrogen fluoride and chlorine in the liquid phase. The main products are 3-trifluoromethylpyridine, 3-chlorodifluoropyridine and 3-difluoromethylpyridine.
Whittaker, Graham. (1981). Halogenation of pyridine compounds (U.S. Patent No. 4259496). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4259496
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile