Entegris, Inc.

Puth Proeung

Maybelle Woo

Kwok-Shun Cheng

Rajnikant B Patel

Tony Yu

Kwok Shun Cheng

Dongzhu Wu

Rajni Patel

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.

Porous polyethylene filter membrane with asymmetric pore structure, and related filters and methods

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.

Method of forming a laminated single layer composite membrane

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Lowell, MA, United States of America

Puth Proeung