ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,156, issued on Sept. 16, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Three-way valve and oxygen concentrator" was invented by Takeshi Fujiwara (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A three-way valve includes a manifold, a valve body, and a switching mechanism. The manifold is provided with a flow path including first, second and third ports, first, second and third passages leading to the first, second and third ports, and a valve chamber that communicates with the first, second, and third passages. The valve body is accommodated in the valve chamber and is displaceable to a first position at which the first port ...