ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,351, issued on July 1, was assigned to MITSUBISHI HEAVY INDUSTRIES COMPRESSOR Corp. (Tokyo).

"Valve device" was invented by Makio Morimoto (Hiroshima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A valve device includes a valve rod connecting a valve main body and a piston and capable of advancing and retracting in a first direction integrally with the valve main body and the piston, a rotary sleeve rotatably supported on a valve casing in a first circumferential direction around a first center axis, an operation member configured to rotate an operation shaft in a second circumferential direction, an advancing and retracting sleeve immovably ...