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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.:

US 11135566 B1

PDFFull Text
Date of Patent:
Oct. 05, 2021

Filed:

Mar. 23, 2018

Porous fiber and adsorption column

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Aishan Han, Otsu, JP;

Hiroaki Fujieda, Otsu, JP;

Yoshiyuki Ueno, Otsu, JP;

Assignee:

Toray Industries, Inc.;

Attorney:

RatnerPrestia

Primary Examiner:

Benjamin L Lebron

Int. Cl.
CPC ...
A61M 1/16 (2006.01); B01D 15/18 (2006.01); B01J 20/20 (2006.01); B01J 20/28 (2006.01); B01J 20/285 (2006.01); D01F 1/10 (2006.01); D01F 6/16 (2006.01); D01F 8/10 (2006.01); B01J 20/02 (2006.01); B01J 20/06 (2006.01); B01J 20/26 (2006.01);
U.S. Cl.
CPC ...
B01J 20/285 (2013.01); A61M 1/1621 (2014.02); B01D 15/1871 (2013.01); B01J 20/0207 (2013.01); B01J 20/0277 (2013.01); B01J 20/06 (2013.01); B01J 20/20 (2013.01); B01J 20/205 (2013.01); B01J 20/261 (2013.01); B01J 20/28004 (2013.01); B01J 20/2808 (2013.01); B01J 20/28026 (2013.01); B01J 20/28052 (2013.01); B01J 20/28059 (2013.01); B01J 20/28083 (2013.01); B01J 20/28085 (2013.01); D01F 1/10 (2013.01); D01F 6/16 (2013.01); D01F 8/10 (2013.01); B01J 2220/46 (2013.01); D10B 2401/10 (2013.01); D10B 2509/00 (2013.01);
Abstract

The present invention provides: a porous fiber that exhibits both improved adsorption capacity, and suppressed exposure and detachment of particulates; an adsorption column filled with said porous fiber; and a blood purification system in which an adsorption column is connected to a water removal column. The porous fiber according to the present invention has a three-dimensional pore structure formed by a solid fiber, and satisfies all of the following conditions. (1) The porous fiber has particulates having a diameter of not more than 200 μm, and the percentage of area occupied by said particulates having a diameter of not more than 200 μm in a horizontal cross section of the three-dimensional pore structure is at least 3.0%. (2) The porous fiber does not contain said particulates having a diameter of not more than 200 μm in the region within 1.0 μm in the depth direction from the outermost surface.

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