The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2026
Filed:
May. 24, 2022
Jfe Steel Corporation, Tokyo, JP;
Toyo Drilube Co., Ltd., Tokyo, JP;
Yasuhide Ishiguro, Tokyo, JP;
Seigo Goto, Tokyo, JP;
Takashi Koga, Tokyo, JP;
Takamasa Kawai, Tokyo, JP;
Seiji Ozaki, Tokyo, JP;
Hideo Sato, Tokyo, JP;
Sachiko Fujimoto, Tokyo, JP;
Koichi Shoda, Tokyo, JP;
Akira Okubo, Tokyo, JP;
Ryota Kobayashi, Tokyo, JP;
Ryota Kubo, Tokyo, JP;
Kota Toyosawa, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
TOYO DRILUBE CO., LTD., Tokyo, JP;
Abstract
An agent for forming a solid lubricating coating film on a thread portion of oil country tubular goods, in which a binder resin contains a prepolymer and a curing agent, the prepolymer is formed of one or more epoxy resins, 70 parts by weight or more of the prepolymer is contained with respect to 100 parts by weight of the binder resin, the epoxy resin constituting the prepolymer has an epoxy equivalent of 100 or more and 500 or less, the solid lubricant contains boron nitride (BN) in an amount of 80% by weight or more, BN has an average particle size of 10 μm or less, and a total weight of the solid lubricant is 0.1 times or more and two times or less a total weight of the binder resin.