US Patent Issued to SHIN-ETSU CHEMICAL on Oct. 21 for "Method for producing rare earth carbonate fine particles and a rare earth carbonate fine particle" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,299, issued on Oct. 21, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).

"Method for producing rare earth carbonate fine particles and a rare earth carbonate fine particle" was invented by Mitsuhito Takahashi (Annaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing rare earth carbonate fine particles, including, forming a reaction solution in which an alkyldimethylamine oxide compound having a structure represented by the following formula (1) or a methylmorpholine oxide compound is added to an aqueous solution containing rare earth ion and an excess amount of urea with respect to the rare earth ion, such that the com...