ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,749,604, issued on Sept. 29, was assigned to ROGERS Corp. (Chandler, Ariz.).
"M-type hexaferrite comprising a low dielectric loss ceramic" was invented by Yajie Chen (Andover, Mass.) and Yu Wang (Malden, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an aspect, an M-type ferrite, comprises oxides of Me, Me', Me", Co, Ti, and Fe; wherein Me is at least one of Ba, Sr, or Pb; Me' is at least one of Ti, Zr, Ru, or Ir; and Me" is at least one of Mg or Ca. In another aspect, a method of making an M-type ferrite comprises milling ferrite precursor compounds comprising oxides of at least Co, Fe, Ti, Me, Me', and Me", to form an oxide mixture; wherein ...