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:
Jul. 10, 1984
Filed:
May. 19, 1982
Applicant:
Inventors:
Assignee:
Teijin Limited, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2105002 ; 264 41 ; 2641 / ; 428 36 ; 428398 ; 521 64 ; 521 841 ;
Abstract
A porous membrane which is composed of cellulose acetate and acrylic polymer, for example, poly(methyl methacrylate) or methyl acrylate-methyl methacrylate copolymer, is highly suitable for plasmapheresis. A polymer alloy consisting of cellulose acetate, acrylic polymer and a small amount of cellulose nitrate has a good spinnability to produce a hollow fiber type membrane and has an excellent biocompatibility.