ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,912, issued on Feb. 3, was assigned to LUH CHERNG ENTERPRISE Co. LTD. (Kaohsiung, Taiwan).

"Electrode assembly of pH meter" was invented by Wen-Feng Tsai (Kaohsiung, Taiwan), Ke-Fu Lin (Kaohsiung, Taiwan) and Shu-Wei Hsu (Kaohsiung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrode assembly of a pH meter includes a plurality of ion barrier units and electrolyte retaining units that are arranged along a central axis. Each ion barrier unit includes an impermeable substrate, a transport ring, and an impermeable cover. The substrate has a receiving cavity, and a first side aperture with a first dowel inserted therein. The transport ring ...