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:
Oct. 04, 1977
Filed:
Dec. 02, 1975
Applicant:
Inventors:
Akira Nagakura, Kawaguchi, JA;
Michio Moroe, Musashino, JA;
Yasuto Koyama, Tokyo, JA;
Haruki Kurihara, Tokyo, JA;
Assignee:
Takasago Perfumery Co., Ltd., Tokyo, JA;
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
2605 / ; 131 / ; 2605 / ;
Abstract
A novel spiro compound, 3,7,11,11-tetramethyl-spiro[5,5]-undeca-8-ene-1-one for altering the flavor or aroma of tobacco products. The spiro compound is prepared by reacting pulegone and piperylene in a solvent in the presence of a Lewis acid catalyst.