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:
Feb. 13, 2018
Filed:
Jul. 24, 2013
Applicant:
Nippon Valqua Industries, Ltd., Tokyo, JP;
Inventors:
Assignee:
Nippon Valqua Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06M 15/333 (2006.01); D01D 5/00 (2006.01); D04H 1/4318 (2012.01); D04H 1/728 (2012.01); D06M 101/22 (2006.01);
U.S. Cl.
CPC ...
D06M 15/333 (2013.01); D01D 5/0007 (2013.01); D04H 1/4318 (2013.01); D04H 1/728 (2013.01); D06M 2101/22 (2013.01); D06M 2400/01 (2013.01); D10B 2321/042 (2013.01); D10B 2401/022 (2013.01); Y10T 428/268 (2015.01);
Abstract
Provided is a hydrophilic fluororesin sheet having significantly improved properties such as filtering performance which includes primary fibers and secondary fibers having a smaller fiber diameter than a fiber diameter of the primary fibers, the secondary fibers crosslinking in each of the primary fibers and/or crosslinking between different primary fibers in such a manner that no knots are formed at crosslinking points, the primary fibers and the secondary fibers including fluororesin fibers including polytetrafluoroethylene [PTFE], wherein a surface of the sheet to which hydrophilization treatment has been applied.