US Patent Issued to MITSUBISHI ELECTRIC on April 14 for "Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine" (Japanese Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,200, issued on April 14, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Rare earth sintered magnet, method for producing rare earth sintered magnet, rotor, and rotary machine" was invented by Akito Iwasaki (Tokyo), Yukina Yoshioka (Tokyo), Yoshikazu Nakano (Tokyo) and Yasutaka Nakamura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rare earth sintered magnet according to the present disclosure includes: a main phase satisfying general formula (Nd, La, Sm)-Fe-B and including crystal grains based on R2Fe14B crystal structures; and a crystalline subphase based on an oxide phase represented by (Nd, La, Sm)-O. The subphase has a higher con...