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. 29, 1988
Filed:
Oct. 16, 1986
Applicant:
Inventors:
Takeshi Inagaki, Yokohama, JP;
Tuyoshi Irie, Chigasaki, JP;
Katsumi Nakamura, Yokohama, JP;
Denzi Sato, Tochigi, JP;
Assignee:
Nitto Chemical Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549273 ; 562602 ; 562598 ;
Abstract
A method for producing .alpha.,.alpha.-dimethyl-.delta.-valerolactone which comprises carrying out the addition reaction of hydrogen bromide and 2,2-dimethyl-4-pentenoic acid in the presence or absence of a catalyst to synthesize 2,2-dimethyl-5-bromovaleric acid which is then subjected to ring-closure reaction by alkali treatment.
Inagaki, Takeshi. (1988). Method for producing .alpha.,.alpha.-dimethyl-.delta.-valerolactone (U.S. Patent No. 4734511). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4734511
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile