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:
May. 21, 1991
Filed:
Jun. 24, 1988
Shigenori Mori, Raleigh, NC (US);
Kinzo Iitani, Raleigh, NC (US);
Masaki Yamamoto, Raleigh, NC (US);
Masashi Miyazawa, Yokohama, JP;
Toyokazu Kaneko, Sagamihara, JP;
Tetsuya Kaneko, Kawasaki, JP;
Ken-ich Yarita, Yokohama, JP;
Ajimomoto Co., Inc., Tokyo, JP;
Abstract
A process for recovering a high-purity L-amino acid from a fermentation liquor obtained by fermentation or an enzymic method, which comprises removing the impurities contained in said fermentation liquor by passing said fermentation liquor through an ultrafilter membrane and then through an ion-exchange or adsorbent resin; concentrating or cooling the effluent thus obtained to result in crystallization of said L-amino acid, and isolating said crystalline L-amino acid from said fermentation liquor.