US Patent Issued to TODA KOGYO on Sept. 23 for "Sodium ferrite particle powder and production method thereof" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,132, issued on Sept. 23, was assigned to TODA KOGYO CORP. (Hiroshima, Japan).

"Sodium ferrite particle powder and production method thereof" was invented by Muneyoshi Sakamoto (Otake, Japan), Nobuya Shimo (Otake-shi, Japan) and Eiichi Kurita (Otake-shi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The sodium ferrite particle powder according to the present invention is characterized in that at least one metal or more selected from the metal group consisting of silicon, aluminum, titanium, manganese, cobalt, nickel, magnesium, copper and zinc is contained in an amount of 0.05 to 20% by weight in terms of the oxide, and the molar ratio of Na/...