US Patent Issued to NITTO DENKO on Sept. 30 for "Separation membrane" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,481, issued on Sept. 30, was assigned to NITTO DENKO Corp. (Ibaraki, Japan).

"Separation membrane" was invented by Kazuya Yoshimura (Ibaraki, Japan), Hisae Shimizu (Ibaraki, Japan) and Makoto Katagiri (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a separation membrane suitable for separating water from a liquid mixture containing an alcohol and water, the separation membrane being capable of reducing a decrease in separation performance regardless of long-term use.A separation membrane 10 of the present invention includes a polyimide having a structural unit X represented by the following formula (1) ...