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. 15, 1992
Filed:
Jan. 22, 1991
Applicant:
Inventors:
Regine de Mesantourne, Cerizay, FR;
Pierre Gallezot, Lyons, FR;
Assignee:
Societe Francaise Hoechst, Puteaux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
562531 ;
Abstract
Preparation process for glyoxylic acid in which glyoxal is subjected to a heterogeneous catalytic oxidation in an aqueous medium by oxygen in the presence of catalytic quantities of platinum.