ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,495, issued on Aug. 5, was assigned to TOCALO Co. LTD. (Kobe, Japan).
"Surface treatment method" was invented by Hiroki Yokota (Akashi, Japan) and Daisuke Kawai (Akashi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A surface treatment method is for processing a surface of a substrate. The method includes irradiating a surface having unevenness with a laser beam satisfying all of the three following requirements: a power density in a range with a radius of 25 micro metre from a center of a laser beam spot is 1.0x103 to 1.0x105 kW/cm2; a power density of an entire laser beam spot is 0.08 to 0.12 times the power density in the range with the rad...