ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,474, issued on Sept. 30, was assigned to SCREEN HOLDINGS Co. LTD. (Kyoto, Japan).
"Cell retainer" was invented by Satoshi Urakawa (Kyoto, Japan) and Masakazu Sanada (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cell retainer has a measuring surface that includes a work region in which a plurality of working electrodes are arranged, a reference electrode arranged outward of the work region, a plurality of first regions provided between the work region and the reference electrode, and a second region arranged between each two of the first regions, the two being adjacent to each other in a radial direction. A contact angle in the firs...