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. 11, 2025
Filed:
Feb. 24, 2020
Gharda Chemicals Limited, Maharashtra, IN;
Keki Hormusji Gharda, Maharashtra, IN;
Diwakar Shenoy, Maharashtra, IN;
Laxminarayan Shet, Maharashtra, IN;
Yatin Samangadkar, Maharashtra, IN;
Abhijeet Suresh Kawade, Maharashtra, IN;
GHARDA CHEMICALS LIMITED, Maharashtra, IN;
Abstract
A process for the synthesis of fipronil, which is a broad spectrum insecticide of the following chemical structure, is provided. The process provides fipronil with a yield in the range of 75% to 90% and purity in the range of 95% to 97%. By the process, the observed amount of sulfone impurity i.e., 5-amino-1-(2,6-dichloro-4-trifluoromethylphenyl)-3-cyano-4-trifluoro methylsulfonyl pyrazole in fipronil is in the range of 0% to 0.5%.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile