US Patent Issued to JFE Steel on June 23 for "Stainless steel seamless pipe for oil country tubular goods and method for manufacturing the same" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,725, issued on June 23, was assigned to JFE Steel Corp. (Tokyo).

"Stainless steel seamless pipe for oil country tubular goods and method for manufacturing the same" was invented by Mami Endo (Tokyo), Kenichiro Eguchi (Tokyo), Mitsuhiro Okatsu (Tokyo) and Masao Yuga (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided herein is a stainless steel seamless pipe for oil country tubular goods. A method for manufacturing such a stainless steel seamless pipe is also provided. The stainless steel seamless pipe has: a composition that contains, in mass %, C: 0.10% or less, Si: 0.5% or less, Mn: 0.05 to 0.50%, P: 0.030% or less, S: 0.005% or less, O...