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:
Sep. 01, 1987
Filed:
May. 30, 1986
Applicant:
Inventors:
Assignee:
S.C. Johnson & Son, Inc., Racine, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562506 ; 562500 ; 568348 ; 568364 ; 568381 ;
Abstract
Pyrethroid acids are prepared by conducting a cycloaddition reaction of a conjugated diene and a dihaloketene to form a dihalo-vinylcyclobutanone product; reducing the dihalo-vinylcyclobutanone product to a monohalo-vinylcyclobutanone product and then conducting a ring contraction with a base to form the desired acid product.
Brady, William. (1987). Process for the preparation of pyrethroid acids (U.S. Patent No. 4691052). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4691052
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile