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:
Aug. 20, 1991
Filed:
May. 22, 1990
Applicant:
Inventors:
Peter Fahrni, Fullinsdorf, CH;
Theodor Siegfried, Basel, CH;
Assignee:
Hoffman-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549315 ; 549316 ; 564394 ; 564438 ;
Abstract
A process for the manufacture of ascorbic acid from 2-ketogulonic acid esters (KGAE) utilizing amine salts of the latter is disclosed.