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:
Mar. 26, 1996
Filed:
Aug. 30, 1994
Applicant:
Inventors:
Geert W Meindersma, Stein, NL;
Franciscus H Vergossen, Echt, NL;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210651 ; 210652 ; 210653 ; 210636 ; 210639 ; 127 34 ; 127 42 ;
Abstract
A process is described for the recovery of raw materials in the aspartame preparation process from aqueous process streams which also contain dissolved salt. The process comprises subjecting the streams to nanofiltration with the aid of a composite membrane having specified retention values to obtain a retentate. The raw materials present in the retentate are recovered or the retentate is returned to the aspartame preparation process without any further processing. An apparatus for carrying out the process is also described.