US Patent Issued to JFE Steel on March 17 for "Stainless steel seamless pipe and method for manufacturing stainless steel seamless pipe" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,631, issued on March 17, was assigned to JFE Steel Corp. (Tokyo).

"Stainless steel seamless pipe and method for manufacturing stainless steel seamless pipe" was invented by Yuichi Kamo (Tokyo) and Masao Yuga (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stainless steel seamless pipe has a composition that contains, in mass %, C: 0.06% or less, Si: 1.0% or less, Mn: 0.01% or more and 1.0% or less, P: 0.05% or less, S: 0.005% or less, Cr: 15.2% or more and 18.5% or less, Mo: 1.5% or more and 4.3% or less, Cu: 1.1% or more and 3.5% or less, Ni: 3.0% or more and 6.5% or less, Al: 0.10% or less, N: 0.10% or less, O: 0.010% or less, and Sn: 0.0...