US Patent Issued to Niterra Materials on May 12 for "Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball" (Japanese Inventors)

ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,728, issued on May 12, was assigned to Niterra Materials Co. Ltd. (Yokohama, Japan).

"Ceramic ball material, method for manufacturing ceramic ball using same, and ceramic ball" was invented by Kai Funaki (Yokohama, Japan) and Hideki Sato (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ceramic ball material according to an embodiment including: a spherical portion; and a band-shaped portion formed over a circumference of a surface of the spherical portion. The ceramic ball material has a ratio Rtb/Rts of 1.0 or more, where Rtb denotes a maximum cross-sectional height of a roughness profile on an outer peripheral surface of the band-s...