US Patent Issued to NITTETSU MINING on Oct. 27 for "Semi-hard magnetic powder having a high value and method for synthesizing same" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,776,432, issued on Oct. 27, was assigned to NITTETSU MINING Co. LTD. (Tokyo).

"Semi-hard magnetic powder having a high value and method for synthesizing same" was invented by Akira Kishimoto (Tokyo), Takahiro Ito (Tokyo) and Naoto Kitamura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide a semi-hard magnetic white powder having characteristics suitable as a security pigment, such as the magnetic powder contained in magnetic inks used for MICR. The white powder includes base particles made of a semi-hard magnetic Alnico alloy, the base particles having a titanium oxide film and a metallic silver film ...