ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,390, issued on Dec. 30, was assigned to KEYENCE Corp. (Osaka, Japan).
"Ultrasonic flowmeter" was invented by Hiroki Matsui (Osaka, Japan), Daiki Matsumoto (Osaka, Japan) and Ryuma Miyake (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To enable accurate measurement of a flow rate of a gas flowing in a non-metallic tube. An ultrasonic flowmeter includes a first wedge member having a first angle, a second wedge member having a second angle, and a flow rate measurement unit that measures a flow rate of a gas based on a propagation time difference of a longitudinal wave excited by a tube. The first angle and the second angle are configured ...