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:
Dec. 30, 1980
Filed:
Apr. 10, 1979
Applicant:
Inventor:
Tadamitsu Kiyoura, Kamakura, JP;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562577 ;
Abstract
A salt of pyruvic acid is formed by oxidizing a salt of lactic acid with an oxygen-containing gas in a water-containing solvent in the presence of a catalyst. The catalyst used herein comprises (a) at least one component selected from platinum and palladium and (b) at least one component selected from lead, tin, tellurium, indium, bismuth, and compounds of these elements. The resulting pyruvate is isolated in the form of a solid by concentrating the catalyst-free reaction mixture and then mixing isopropyl alcohol therewith.