ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,406,788, issued on Sept. 2, was assigned to ROGERS Corp. (Chandler, Ariz.).

"M-type hexaferrite comprising antimony" was invented by Yajie Chen (Brighton, Mass.) and Qifan Li (Hubei, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an aspect, a ferrite composition can comprise a SbCo-M-type ferrite having the formula: Me1-xSbxCoy+xM'yFe12-x-2yO19, wherein Me is at least one of Sr, Pb, or Ba; M' is at least one of Ti, Zr, Ru, or Ir; x is 0.001 to 0.3; and y is 0.8 to 1.3. In another aspect, a method of making the ferrite composition comprises mixing ferrite precursor compounds comprising Me, Fe, Sb, Co, and M'; and sintering the ferrite precursor ...