U.S. Patent No. 10,888,283 B1 covid patent techpat | August 7, 2021 U.S. Patent No. 10,888,283 B1 (‘283), issued on January 12, 2021, to applicants/inventors Boonsieng Benjauthrit, Sorapod B. Benjauthrit, Vatcharee L. Benjauthrit, and Kamolchanok J. Benjauthrit, all...