ALEXANDRIA, Va., June 2 -- United States Patent no. 12,646,979, issued on June 2, was assigned to ABB Schweiz AG (Baden, Switzerland).

"Non-exchanged-couple injection moldable hybrid magnet" was invented by Elio Alberto Perigo (Wendell, N.C.), Darren D. Tremelling (Apex, N.C.) and Sheng Zhong (Hillsborough, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor for an electric machine is disclosed, the rotor including a plurality of cavities filled with a magnetic material. In the disclosed rotor, the magnetic material includes Samarium-Iron-Nitrogen (Sm-Fe-N) particles, Manganese-Bismuth (Mn-Bi) particles, and a polymer binder. Performance characteristics of the magnetic material, such as following the...