US Patent Issued to NITTETSU MINING on Feb. 3 for "Cobalt ferrite particle production method and cobalt ferrite particles produced thereby" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,082, issued on Feb. 3, was assigned to NITTETSU MINING Co. LTD. (Tokyo).

"Cobalt ferrite particle production method and cobalt ferrite particles produced thereby" was invented by Tsubasa Arai (Tokyo), Naoki Muratani (Kochi, Japan), Akira Kishimoto (Tokyo) and Hideyuki Takahashi (Miyagi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are cobalt ferrite particles having a micrometer-order average particle diameter and similar particle diameters. When a cobalt ferrite precursor is treated at a high temperature and a high pressure, an oxidation reaction is caused in the presence of a complexing agent, thereby obtaining intended cobalt ferr...