ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,041, issued on Aug. 5, was assigned to MITSUBISHI HEAVY INDUSTRIES LTD. (Tokyo).
"Steam valve" was invented by Takashi Yokoyama (Tokyo) and Fumiyuki Suzuki (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A steam valve including a valve seat and a valve body, each of which has: a first layer formed on a base material and made of a material different from the base material; and a second layer formed on the first layer in a contact position between the valve body and the valve seat and made of a material different from the base material and the first layer. On one side or the other side of a steam passage regarding at least one of the va...