US Patent Issued to Ping-Yen Chou on Dec. 9 for "Testing method" (Taiwanese Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,017, issued on Dec. 9, was assigned to Ping-Yen Chou (Kaohsiung, Taiwan).

"Testing method" was invented by Ping-Yen Chou (Kaohsiung, Taiwan) and Po-Jui Su (Taichung, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A testing method, the steps comprising: providing a liquid chromatograph and an inductively coupled plasma mass spectrometer in series; preparing a solution of a test substance containing a concentration of the substance in the PPm to PPb range, continuously perfusing the test solution into a liquid chromatography column; and obtaining a penetration curve of the substance for the penetration ratio and time, and the penetration ratio v...