US Patent Issued to DOWA ELECTRONICS MATERIALS on May 13 for "Hexagonal ferrite magnetic powder and method for producing same" (Japanese Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,410, issued on May 13, was assigned to DOWA ELECTRONICS MATERIALS Co. LTD. (Tokyo).

"Hexagonal ferrite magnetic powder and method for producing same" was invented by Masaki Koshiko (Tokyo), Akifumi Onodera (Tokyo) and Hirohisa Omoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A hexagonal ferrite magnetic powder is significantly more useful for achieving simultaneously both the enhancement of the recording density and the enhancement of the SNR of a magnetic recording medium. The hexagonal ferrite magnetic powder contains Bi at a Bi/Fe molar ratio in a range of 0.035 or less, has a saturation magnetization Sigmas of 42.0 Am2/kg or more and ...