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:
Oct. 25, 1994
Filed:
May. 14, 1993
Jack C Little, Lafayette, CA (US);
Patricia A Thibos, Concord, CA (US);
Mariam G Kidisti, Pittsburg, CA (US);
Susan D Thompson, San Leandro, CA (US);
DowElanco, Indianapolis, IN (US);
Abstract
5-Amino-1,2,4-triazole-3-sulfonamides, which are intermediates for substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides are prepared in two steps from 5-amino-3-mercapto-1,2,4-triazole by chlorination in a medium containing an aqueous acid to obtain 5-amino-3-chlorosulfonyl-1,2,4-triazole and subsequent condensation of this intermediate with substituted anilines. The condensation reaction takes place either in the presence or absence of an acid scavenging base.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile