ALEXANDRIA, Va., July 9 -- United States Patent no. 12,350,742, issued on July 8, was assigned to Mitsubishi Materials Corp. (Tokyo).
"Surface-coated cutting tool" was invented by Hiroki Nakamura (Joso, Japan), Takuya Ishigaki (Joso, Japan), Kousuke Yanagisawa (Naka-gun, Japan) and Hisashi Honma (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a surface-coated cutting tool including a complex carbonitride layer on the tool body, wherein a ratio of crystal grains having a NaCl type face-centered cubic structure is 80 area % or more, xavg and yavg satisfy 0.60less than equal toxavgless than equal to0.90 and 0.000less than equal toyavgless than equal to0.050, respectively, a composition of the ...