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. 04, 2017
Filed:
May. 31, 2013
Applicant:
Mitsubishi Rayon Co., Ltd., Chiyoda-ku, JP;
Inventors:
Assignee:
Mitsubishi Rayon Co., Ltd., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
B01D 39/00 (2006.01); B01D 39/14 (2006.01); B01D 29/00 (2006.01); B01D 71/34 (2006.01); B01D 69/08 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01);
U.S. Cl.
CPC ...
B01D 71/34 (2013.01); B01D 69/02 (2013.01); B01D 69/08 (2013.01); B01D 69/12 (2013.01); B01D 2325/20 (2013.01); B01D 2325/24 (2013.01); B01D 2325/34 (2013.01); B01D 2325/40 (2013.01);
Abstract
A hollow porous membrane of the present invention comprises a plurality of porous membrane layers, at least two layers of which are formed using a thermoplastic resin (a) having a mass average molecular weight of 500,000 or more, and the hollow porous membrane having a bursting pressure of 200 kPa or more when an internal pressure is applied and exhibiting virus removal performance of LRV 4 or more in the case of using MS2 phage as a test bacterium.