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. 23, 1993
Filed:
Jul. 29, 1988
Applicant:
Inventors:
Yong Z Kim, Daejeon-si, KR;
Won S Kim, Daejeon-si, KR;
Assignee:
Lucky, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
560213 ; 562598 ;
Abstract
In the present invention, 3,3-dimethyl-4-pentenoic acid (DPA) which is used for preparing permethric acid, an intemediate for preparing pyrethroid insecticides, is directly prepared from an isoprenol or a mixture of isoprenol and prenol without having to convert the isoprenol into a prenol or separate the mixture thereof into isoprenol and prenol. The present invention, therefore, has many advantages in view of yield, purity and procedure.
Kim, Yong. (1993). Process for the preparation of 3,3-dimethyl-4-pentenoic acid (U.S. Patent No. 5189202). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5189202
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile