US Patent Issued to JFE STEEL, TOYO DRILUBE on May 27 for "Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goods" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,552, issued on May 27, was assigned to JFE STEEL Corp. (Tokyo) and TOYO DRILUBE Co. LTD. (Tokyo).

"Agent for forming solid lubricating coating film, oil country tubular goods, threaded joint for oil country tubular goods, and method for manufacturing oil country tubular goods" was invented by Yasuhide Ishiguro (Tokyo), Seigo Goto (Tokyo), Takashi Koga (Tokyo), Takamasa Kawai (Tokyo), Seiji Ozaki (Tokyo), Hideo Sato (Tokyo), Sachiko Fujimoto (Tokyo), Koichi Shoda (Tokyo), Akira Okubo (Tokyo), Ryota Kobayashi (Tokyo), Ryota Kubo (Tokyo) and Kota Toyosawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A solid lubricating coating film capable of ...