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:
Nov. 10, 1987
Filed:
Mar. 28, 1986
Applicant:
Inventors:
Koji Yagita, Oita, JP;
Yotsuo Ono, Oita, JP;
Assignee:
Asahi Medical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21050023 ; 21050027 ; 21050028 ; 21050033 ; 21050036 ;
Abstract
A hollow fiber membrane for the dialysis of blood is formed by melt-spinning a block copolymer which has a reduced viscosity of 1.5 to 4.0 and is comprised of 30 to 60% by weight of an aromatic polyester having a water absorption up to 1% by weight and 40 to 70% by weight of polyoxyethylene or its derivative having a number average molecular weight of 3000 to 20000.