ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,060, issued on July 15, was assigned to SUMITOMO ELECTRIC HARDMETAL CORP. (Itami, Japan).
"Cutting tool" was invented by Kazunori Morishige (Itami, Japan) and Katsuya Nakakihara (Itami, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cutting tool includes a main body. The main body includes a distal end surface, a rear end surface, and a side surface. A spiral first groove and a spiral second groove are formed on the side surface of the main body. The first groove has at least four installation surfaces. The first installation surface is located on a most rear end surface side. The second installation surface is located closer to a distal end...