ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,521, issued on Dec. 16, was assigned to ASUSTEK COMPUTER INC. (Taipei, Taiwan).

"Surface treatment method" was invented by Jui-Huang Weng (Taipei, Taiwan), Min-Hua Lin (Taipei, Taiwan) and Hsin-An Shu (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a surface treatment method which is suitable for a metal substrate. The metal substrate has an appearance surface. The surface treatment method comprises the following steps: first, applying surface sandblasting treatment to an appearance surface to form a sandblasted surface; subsequently, applying micro-arc oxidation treatment to the sandblasted surface in combinat...