ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,959, issued on July 22, was assigned to TOKUSEN KOGYO Co. LTD. (Hyogo, Japan).
"Oil ring wire" was invented by Miho Fujino (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oil ring wire (2) containing an alloy steel as a material. The alloy steel contains: 0.50 to 0.65% by mass C; 1.60 to 2.30% by mass Si; 0.60 to 1.10% by mass Mn; 0.75 to 1.15% by mass Cr; 0.18 to 0.45% by mass Ni; 0.05 to 0.15% by mass V; and 0.15% by mass or less Cu. In the oil ring wire 2, an area percentage of a carbide is 1.00% or less. Also disclosed is a method of producing the oil ring wire."
The patent was filed on Dec. 27, 2021, under Application No. 18/274...