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:
Jul. 22, 1980
Filed:
Apr. 05, 1978
Applicant:
Inventors:
Dieter Freudenberger, Hofheim am Taunus, DE;
Friedrich Wunder, Florsheim am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568864 ; 252457 ; 252460 ;
Abstract
Process for the preparation of ethylene glycol by hydrogenating glycolic acid in the presence of catalysts containing elements or compounds of elements from at least two of the groups VIII, VIIb and Ib of the Periodic System.