US Patent Issued to Chugai Seiyaku, Genentech on Jan. 28 for "Method for preparing a composition comprising highly concentrated antibodies by ultrafiltration" (American, Japanese Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,109, issued on Jan. 28, was assigned to Chugai Seiyaku K.K. (Tokyo) and Genentech Inc. (South San Francisco, Calif.).

"Method for preparing a composition comprising highly concentrated antibodies by ultrafiltration" was invented by Kelby Lau (San Francisco), Jean Bender (Gaithersburg, Md.), Saeko Tanaka (Tokyo), Rumiko Wakayama (Tokyo), Hidenari Yamada (Tokyo), Tomonori Isoda (Tokyo) and Masayoshi Oh-Eda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a method for preparing a composition comprising highly concentrated antibodies by ultrafiltration in batch concentration mode having a first constant feed rate step...