US Patent Issued to ENTEGRIS on Sept. 9 for "Porous polyethylene filter membrane with asymmetric pore structure, and related filters and methods" (Massachusetts, New Hampshire Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,423, issued on Sept. 9, was assigned to ENTEGRIS INC. (Billerica, Mass.).

"Porous polyethylene filter membrane with asymmetric pore structure, and related filters and methods" was invented by Kwok-Shun Cheng (Nashua, N.H.), Rajni Patel (Tewksbury, Mass.), Maybelle Woo (Dedham, Mass.) and Puth Proeung (Lowell, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 membra...