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:
Apr. 16, 1985
Filed:
May. 05, 1982
Applicant:
Inventors:
Pavel Lehky, Naters, CH;
Peter Hardt, Visp, CH;
Assignee:
Lonza Ltd., Gampel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
562524 ; 549431 ; 562577 ; 562590 ; 562593 ;
Abstract
Process for the production of 3,3-dimethylglutaric acid from isophorone. In a first step the isophorone is converted with ozone into an ozone-addition product. The ozone-addition product is converted by hydrolysis into 3,3-dimethyl-5-oxohexanoic acid. The latter is converted into 3,3-dimethylglutaric acid by treatment with hydrogen peroxide.