US Patent Issued to POWDERTECH on Oct. 28 for "Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,516, issued on Oct. 28, was assigned to POWDERTECH Co. LTD. (Kashiwa, Japan).

"Ferrite particle, carrier core material for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer" was invented by Makoto Ishikawa (Chiba, Japan) and Tetsuya Uemura (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a ferrite particle containing a crystal phase component containing a perovskite-type crystal represented by a composition formula of RZrO3 (wherein R is an alkaline earth metal element), and a Mg content of 0.45 mass % or less. The present invention also relates to...