US Patent Issued to NITTO DENKO on March 17 for "Spiral membrane element and membrane separation system" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,365, issued on March 17, was assigned to NITTO DENKO Corp. (Ibaraki, Japan).

"Spiral membrane element and membrane separation system" was invented by Makoto Katagiri (Ibaraki, Japan), Yoshihiro Nakamura (Ibaraki, Japan) and Shinya Nishiyama (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a spiral membrane element suitable for suppressing a decrease in a permeation rate (or a permeation flux) of a permeated fluid from a separation membrane. A spiral membrane element of the present invention includes: a central tube; a membrane leaf that has a separation membrane and a permeation spacer and is wound aroun...