ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,657, issued on July 1, was assigned to TORAY INDUSTRIES Inc. (Tokyo).

"Method for inspecting damage in reverse osmosis membrane" was invented by Kenji Saito (Ehime, Japan), Koji Nakatsuji (Ehime, Japan), Hiroo Takabatake (Otsu, Japan) and Shinya Shimoda (Ehime, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a damage inspection method for a reverse osmosis membrane, in which at least one of: presence or absence of physical damage; and a degree of physical damage in a reverse osmosis membrane is inspected based on presence or absence of a stained area on at least a permeate side of a stained membrane obtained by s...