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. 11, 1997
Filed:
Oct. 11, 1994
Applicant:
Inventor:
Jurgen Seifert, Grosswallstadt, DE;
Assignee:
AKZO Nobel NV, Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050024 ; 162 65 ; 21050029 ;
Abstract
In a method for manufacturing cellulose membranes in the form of flat films, tubular films, or hollow filaments with improved biocompatibility, cotton fibers, in particular linters, are treated in alkaline liquor in a single-stage process with gaseous molecular oxygen. In addition, the invention relates to cotton fibers prepared in this manner, especially linters, membranes made therefrom, and their use for hemodialysis.