US Patent Issued to Yokogawa Electric on Sept. 1 for "Concentration apparatus and concentration method" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,722,120, issued on Sept. 1, was assigned to Yokogawa Electric Corp. (Tokyo).

"Concentration apparatus and concentration method" was invented by Yasuhiro Matsui (Musashino, Japan), Kentaro Inoue (Musashino, Japan) and Hiroyuki Katayama (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A concentration apparatus including a negatively charged membrane, a sample water supply, a first solenoid valve on a flow path from the sample water supply to the negatively charged membrane, an acidic solution storage tank storing an acidic solution, a second solenoid valve on a flow path from the acidic solution storage tank to the negatively charged membrane, an alk...