ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,495, issued on Feb. 3, was assigned to TORAY INDUSTRIES Inc. (Tokyo).

"Method for operating hollow fiber membrane module" was invented by Kentaro Kobayashi (Otsu, Japan), Satoko Kanamori (Otsu, Japan) and Takashi Tachibana (Otsu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An operation method of a hollow fiber membrane module is described, the operation method including: a filtration step of performing cross-flow filtration by supplying a feed to an outer surface side of a hollow fiber membrane, in which in the filtration step, a ratio of a viscosity Muf of the feed to a viscosity Mup of a filtrate satisfies a relation of Muf/Mupless than=1....