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:
Dec. 22, 1998
Filed:
Dec. 18, 1995
Applicant:
Inventors:
Kazuhisa Shibata, Otsu, JP;
Motoki Kyo, Otsu, JP;
Hidehiko Sakurai, Otsu, JP;
Makoto Ohno, Otsu, JP;
Assignee:
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
21050023 ; 210484 ; 21050021 ; 21050029 ; 21050041 ; 264 41 ; 264184 ; 264187 ; 2642091 ;
Abstract
A blood purification membrane having a membrane thickness of 10 to 35 .mu.m, an inner diameter of 100 to 300 .mu.m, a porosity of 50 to 85%, a water permeability (ultrafiltration rate) at 37.degree. C. of not less than 20 ml/m.sup.2 .multidot.Hr.multidot.mmHg and a sieving coefficient of albumin of not more than 0.01, a substantially homogeneous interior structure, and a smooth surface structure. A process for producing the membrane and a module are also provided.