US Patent Issued to JFE STEEL, TOYO DRILUBE on Oct. 21 for "Agent, oil country tubular goods, and threaded joint for oil country tubular goods" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,581, issued on Oct. 21, was assigned to JFE STEEL Corp. (Tokyo) and TOYO DRILUBE Co. LTD. (Tokyo).

"Agent, oil country tubular goods, and threaded joint for 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: "An agent for forming a solid lubricating coating film on a tightening surface of a thread portion, in which a solid lubricant is dispersed...