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:
Jun. 23, 2020
Filed:
Mar. 13, 2017
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/26 (2006.01); D04H 1/4326 (2012.01); D04H 1/4274 (2012.01); B01D 39/16 (2006.01); B32B 27/00 (2006.01); B32B 5/02 (2006.01); B32B 27/28 (2006.01); C08L 81/02 (2006.01); D04H 1/4374 (2012.01);
U.S. Cl.
CPC ...
B32B 5/26 (2013.01); B01D 39/16 (2013.01); B01D 39/1623 (2013.01); B32B 5/024 (2013.01); B32B 27/00 (2013.01); B32B 27/286 (2013.01); D04H 1/4326 (2013.01); D04H 1/4374 (2013.01); B32B 2305/188 (2013.01); B32B 2307/306 (2013.01); B32B 2307/54 (2013.01); B32B 2307/724 (2013.01); C08L 81/02 (2013.01);
Abstract
A laminated polyarylene sulfide heat-resistant filter has a plurality of layers, at least including a first web layer that is a filtering surface, and a second web layer that is a non-filtering surface, the laminated polyarylene sulfide heat-resistant filter being characterized in that the first web layer contains 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 0.5 to 1.2 dtex, and 30 to 70 wt % of polyarylene sulfide fibers having a fineness of 1.3 to 3.0 dtex taking a total of a weight percentages of the first web layer as 100 wt %, wherein the second web layer contains polyarylene sulfide fibers having a fineness of 1.0 to 4.0 dtex.