US Patent Issued to Sumitomo Electric Industries, A.L.M.T. on Sept. 30 for "Coated super-abrasive grains, abrasive grains, and wheel" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,585, issued on Sept. 30, was assigned to Sumitomo Electric Industries Ltd. (Osaka, Japan) and A.L.M.T. Corp. (Tokyo).

"Coated super-abrasive grains, abrasive grains, and wheel" was invented by Akito Ishii (Osaka, Japan), Katsumi Okamura (Osaka, Japan), Masahiro Ohata (Osaka, Japan), Masato Michiuchi (Osaka, Japan), Kei Hirai (Osaka, Japan), Nobuhide Nakamura (Hyogo, Japan) and Kentaro Chihara (Hyogo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coated super-abrasive grain comprises: a body composed of cubic boron nitride; and a coating film coating at least a portion of a surface of the body, the body having a dislocation density of 9x101...