US Patent Issued to NIPPON STEEL, USUI on Nov. 4 for "Steel pipe for fuel injection pipe, and fuel injection pipe using same" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,275, issued on Nov. 4, was assigned to NIPPON STEEL Corp. (Tokyo) and USUI Co. LTD. (Shizuoka, Japan).

"Steel pipe for fuel injection pipe, and fuel injection pipe using same" was invented by Taizo Makino (Tokyo), Masahiro Yamazaki (Tokyo), Yuji Arai (Tokyo), Osamu Endo (Shizuoka, Japan), Naoki Serizawa (Shizuoka, Japan) and Tatsuya Masuda (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A steel pipe for a fuel injection pipe has a chemical composition consisting of, by mass %: C: 0.17 to 0.27%, Si: 0.05 to 0.40%, Mn: 0.30 to 2.00%, P: 0.020% or less, S: 0.0100% or less, O: 0.0040% or less, Ca: 0.0010% or less, Al: 0.005 to 0.060%, N: ...