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:
May. 21, 1991
Filed:
Dec. 13, 1989
Applicant:
Inventors:
Christian Chapuis, Petit-Saconnex, CH;
Christian Margot, Bassins, CH;
Karl-Heinrich Schulte-Elte, Onex, CH;
Herve Pamingle, Versoix, CH;
Assignee:
Firmenich S.A., Geneva, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549332 ; 568420 ; 568822 ;
Abstract
New 4,4,5,8-tetramethyl-1-oxaspiro[2.5]octane. A process for its preparation starting from 2,2,3,6-tetramethyl-1-cyclohexanone is described. 4,4,5,8-Tetramethyl-1-oxaspiro[2.5]octane is a useful raw material for the preparation of 2,2,3,6-tetramethyl-cyclohexane-carbaldehyde, a key intermediate for the synthetis of valuable fragrance ingredients.
Chapuis, Christian. (1991). Tetramethyl-1-oxaspiro[2.5]octane (U.S. Patent No. 5017711). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5017711
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile