ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,125, issued on Sept. 1, was assigned to ASTOM Corp. (Tokyo).
"Cation exchange membrane and method for producing same" was invented by Naoto Takashina (Shunan-city, Japan), Masayuki Kishino (Shunan-city, Japan) and Kenji Fukuta (Shunan-city, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cation-exchange membrane using a polyolefin-based substrate with reduced swelling of an ion-exchange resin and a low electrical resistance is provided. The cation-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric, and a sulfonic acid group-containing cation-exchange resin. A portion of the cation-exchange me...