ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,563,994, issued on Feb. 24, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).
"Breaking-in and cleaning method and apparatus for wafer-cleaning brush" was invented by Chia-Ling Pai (Taichung City, Taiwan) and Yu-Min Chang (Hsinchu City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of cleaning wafer-cleaning brushes includes passing a wafer having a first polished main side and an opposing unpolished backside between a pair of substantially cylindrical shaped wafer-cleaning brushes are rotated about an axial direction of the brushes while passing the wafer between the pair of wafer-cleaning brushes. A cl...