ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,867, issued on Aug. 12, was assigned to TORAY INDUSTRIES Inc. (Tokyo).

"Method for operating membrane filtration unit and membrane filtration unit" was invented by Kentaro Kobayashi (Otsu, Japan) and Atsushi Kobayashi (Otsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method of operating a membrane filtration unit including plural hollow fiber membrane modules connected to each other in parallel, the method including: a filtration step; a collection step; and a recovery step, in which a relation of n1less than=n2less thann3 is satisfied, where n1 is the number of the hollow fiber membrane modules simultane...