ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,434,349, issued on Oct. 7, was assigned to Sintokogio Ltd. (Nagoya, Japan).
"Surface treatment method" was invented by Fumiaki Kumeno (Nagoya, Japan) and Hayato Taniguchi (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A surface treatment method includes a step of irradiating a workpiece with a pulsed laser beam through a transparent liquid and a step of causing particles to collide with a heat-affected layer developed on a surface layer portion of the workpiece in the step of irradiating. The particles each has a core made of an elastic body and abrasive grains provided on a surface of the core."
The patent was filed on July 8, 2021, unde...