ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,929, issued on Nov. 25.
"Fluid activating device" was invented by Yasuhira Yamada (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an ultra-fine bubble generator capable of efficiently generating ultra-fine bubbles in fluid. The generator is a fluid activating device including: a shaft in a cylindrical columnar shape; a tubular body provided with a hollow part to accommodate the shaft with a predetermined interval between an inner peripheral surface of the hollow part and an outer peripheral surface of the shaft; and multiple blades that are provided between the outer peripheral surface of the shaft and an inner peripheral su...