US Patent Issued to MINEBEA MITSUMI on Sept. 1 for "Rare-earth iron-based ring magnet and method for manufacturing same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,725,732, issued on Sept. 1, was assigned to MINEBEA MITSUMI INC. (Nagano, Japan).

"Rare-earth iron-based ring magnet and method for manufacturing same" was invented by Kentaro Hanashima (Kitasaku-gun, Japan) and Haruhiro Komura (Kitasaku-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a rare-earth iron-based ring magnet includes: (a) obtaining a rare-earth iron-based magnet powder; (b) preparing a compound; (c) forming a green body; (d) inserting the green body into a composite mold, setting the composite mold in a spark plasma sintering (SPS) apparatus, and degreasing the green body by energization at a predetermine...