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. 17, 1991
Filed:
May. 05, 1989
Applicant:
Inventors:
Marie-Christine Bitar, Levallois-Perret, FR;
Jean-Louis Sabot, Maisons-Laffitte, FR;
Paul Aviron-Viollet, Saint-Genis Laval, FR;
Assignee:
Rhone-Poulenc Chimie, Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210634 ; 210511 ;
Abstract
Desired amino acids, e.g., phenylalanine, arginine, leucine, isoleucine, valine and/or histidine, are selectively countercurrently extracted from more complex, essentially cystine-free solutions of a plurality of amino acids, utilizing an organic phosphorus acid extractant, advantageously in solution in at least one alcohol, ether, ketone and/or aliphatic hydrocarbon.