US Patent Issued to HORIBA STEC on May 5 for "Fluid control valve, fluid control device, and fluid control valve manufacturing method" (Japanese Inventor)

ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,477, issued on May 5, was assigned to HORIBA STEC Co. Ltd. (Kyoto, Japan).

"Fluid control valve, fluid control device, and fluid control valve manufacturing method" was invented by Kazuya Shakudo (Kyoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention improves the sealability of a fluid control valve, and includes a valve seat having a flat valve seat surface and a valve plug having a flat sitting surface sitting on the valve seat surface. A first surface that is one of the valve seat surface and the sitting surface has a surface hardness higher than a surface hardness of a second surface that is the other one of the valve s...