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:
Mar. 19, 2024
Filed:
Mar. 23, 2018
Applicant:
Teijin Limited, Osaka, JP;
Inventors:
Assignee:
TEIJIN LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/26 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01);
U.S. Cl.
CPC ...
B01D 71/26 (2013.01); B01D 69/02 (2013.01); B01D 69/10 (2013.01); B01D 2201/32 (2013.01); B01D 2325/02 (2013.01); B01D 2325/04 (2013.01); B01D 2325/20 (2013.01); B01D 2325/34 (2013.01);
Abstract
A substrate for a liquid filter contains a polyolefin microporous membrane. A mean flow pore size din a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 20 nm. A mean flow pore size din a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to liquid-liquid phase substitution is from 1 nm to 15 nm. A difference (d−d) between the mean flow pore size dand the mean flow pore size dis 12 nm or less, and a thickness of the polyolefin microporous membrane is from 4 to 25 μm.