ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,238, issued on Feb. 17.
"Device and method for alternately controlling the operation state of two treatment equipment" was invented by Shih-Hao Tang (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a device and method for alternately controlling the operation state of two treatment equipment, each of which alternately operates to treat process emissions from a semiconductor manufacturing process, with two pipelines conveying the emissions to each of the treatment equipment, and two electric heating units providing heat to each of the pipelines, wherein the control device has a human-machine interface controller, a program...