ALEXANDRIA, Va., May 19 -- United States Patent no. 12,635,467, issued on May 19, was assigned to NGK INSULATORS Ltd. (Nagoya, Japan).
"Member for semiconductor manufacturing apparatus" was invented by Taro Usami (Ginan-town, Japan) and Tatsuya Kuno (Nagoya-City, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A member for semiconductor manufacturing apparatus includes a ceramic plate having a wafer placement surface on an upper surface and a built-in electrode; a base plate provided on a lower surface of the ceramic plate, and configured to include a built-in refrigerant flow path; a base plate through-hole provided between adjacent parts of the refrigerant flow path, and configured to penetrate the ba...