ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,724, issued on May 26, was assigned to ABLEPRINT TECHNOLOGY Co. LTD. (Hsinchu, Taiwan).
"Method of cleaning a bottom plate" was invented by Cheng-En Yang (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of cleaning a bottom plate, including: providing an adjacent bottom plate with at least one soldering lug, filling a liquid material between the adjacent bottom plate and the soldering lug to cover the substance to be cleaned, and placing the adjacent bottom plate in a chamber, controlling a temperature of the chamber to 25-200deg C., generating intermittent pressure increasing and reducing and/or intermittent vacuum pumping f...