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:
Feb. 11, 1992
Filed:
Dec. 20, 1989
Applicant:
Inventors:
Michael Diamantoglou, Erlenbach/Main, DE;
Hans Georg Tilgner, Mulheim/Ruhr, DE;
Assignee:
Akzo N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050023 ; 21050029 ; 21050038 ;
Abstract
A biocompatible dialysis membrane for hemodialysis in the form of flat sheets, tubular sheets or hollow filaments is disclosed. The dialysis membrane comprises a mixed polysaccharide ester of acetic acid, and/or propionic acid and/or butyric acid and has a structure represented by the formula ##STR1## wherein Cell denotes the skeleton of the polysaccharide molecule without hydroxyl groups; a, b, p, and s are numbers wherein s is a maximum degreee of substitution and the following equations are satisfied: ##EQU1## with the provision that, if a=0, then p and b must be greater than 0 and, if p or b=0, then a must be greater than 0.