US Patent Issued to OSG on Aug. 11 for "End mill" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,030, issued on Aug. 11, was assigned to OSG Corp. (Toyokawa, Japan).

"End mill" was invented by Shigetoshi Ukei (Toyokawa, Japan) and Masataka Isobe (Toyokawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An end mill includes a plurality of peripheral cutting edges have respective helix angles which are equal to each other and which range from 0deg to 5deg. Each of the plurality of peripheral cutting edges is defined by one of four types of teeth A-D consisting of (a) teeth A-C each defining a partially-uneven cutting edge that includes an uneven edge portion consisting of a nicked portion or a roughing portion and (b) a tooth D that does no...