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. 25, 1992
Filed:
Sep. 27, 1989
Applicant:
Inventor:
Douglas L Ford, Eastwood, AU;
Assignee:
Memtec Limited, Parramatta, AU;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A23L / ; C12H / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
2041824 ; 4263303 ; 4263304 ; 4263305 ; 426423 ; 210690 ; 210691 ; 210692 ;
Abstract
Polyphenolic substances such as food dyes, tannins, fruit juices and wine colorings are removed from a solution by adsorption onto a regeneratable adsorbent polyamide of extended surface and controlled porosity. The surface chemistry of the polyamide may be modified by a glutaraldehyde/resorcinol treatment. The polyphenolic substances are recovered by elution with water or other protonic solvent.