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:
Sep. 09, 2025
Filed:
Aug. 23, 2023
Applicant:
Entegris, Inc., Billerica, MA (US);
Inventors:
Kwok-Shun Cheng, Nashua, NH (US);
Rajni Patel, Tewksbury, MA (US);
Maybelle Woo, Dedham, MA (US);
Puth Proeung, Lowell, MA (US);
Assignee:
ENTEGRIS, INC., Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 71/26 (2006.01); C07B 63/00 (2006.01); B01D 63/14 (2006.01); B01D 69/00 (2006.01);
U.S. Cl.
CPC ...
B01D 71/261 (2022.08); B01D 67/002 (2013.01); B01D 69/02 (2013.01); C07B 63/00 (2013.01); B01D 63/14 (2013.01); B01D 2325/0233 (2022.08); B01D 2325/04 (2013.01);
Abstract
Described are liquid-flowable, porous polyethylene filter membranes that include two opposing sides and that have an asymmetric pore structure; filter components and filters that include this type of porous polyethylene filter membrane; methods of making the porous polyethylene filter membranes, filter components, and filters; and methods of using a porous polyethylene filter membrane, filter component, or filter, to filter a fluid such as a liquid chemical to remove unwanted material from the fluid.