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:
Sep. 09, 1980
Filed:
Jul. 19, 1976
Applicant:
Inventors:
Assignee:
Daiichi Seiyaku Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ;
Abstract
Preparing comenic acid by heating 2,5-diketo-gluconic acid at a temperature within the range of 8.degree.-120.degree. C. and at a pH below 0.1. .alpha.-pyrone derivatives are formed as by-products, and comenic acid is separated therefrom by utilizing the solubility differences between the .alpha.-pyrone derivatives and comenic acid.
Quick Actions:
Oga, Shiyunichiro. (1980). Method of preparing comenic acid (U.S. Patent No. 4221723). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4221723
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile