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. 08, 1994
Filed:
Aug. 13, 1990
Applicant:
Inventors:
Assignee:
Isochem, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546250 ; 546290 ; 549417 ;
Abstract
2,3,5-(4H)-Trimethyl pyranone having the formula: ##STR1## which is prepared by acetylation of a ketone derived from 2-formyl-3-pentanone and preparation of 2,3,5-(1H)-trimethyl 4-pyridinone having the formula: ##STR2## by ammonolysis of the 2,3,5-(4H)-trimethyl 4-pyranone.
Wirth, Didier. (1994). Pyranone, process for its preparation, its use in the preparation of a (U.S. Patent No. 5292885). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5292885
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile