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. 18, 2023
Filed:
May. 14, 2021
Applicant:
Entegris, Inc., Billerica, MA (US);
Inventors:
Dongzhu Wu, Somerville, MA (US);
Kwok Shun Cheng, Nashua, NH (US);
Rajnikant B. Patel, Tewksbury, MA (US);
Tony Yu, Quincy, MA (US);
Puth Proeung, Lowell, MA (US);
Maybelle Woo, Dedham, 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 69/12 (2006.01); B01D 71/26 (2006.01);
U.S. Cl.
CPC ...
B01D 69/122 (2013.01); B01D 67/0002 (2013.01); B01D 69/02 (2013.01); B01D 71/26 (2013.01); B01D 2323/08 (2013.01); B01D 2325/04 (2013.01);
Abstract
The present disclosure relates to a composite membrane formed by lamination of two or more separate porous polymeric layers, as well as to a method and system for lamination. Advantageously, the resulting composite is a single layer, being difficult to separate into its component layers, yet effectively maintains the filtering capabilities of the component layers when not laminated.