ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,799, issued on July 15, was assigned to FUSO CHEMICAL Co. LTD. (Osaka, Japan).

"Metal oxide particles surface modified with quaternary ammonium group, and method for producing same" was invented by Tomoko Shimizu (Fukuchiyama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A metal oxide particle is disclosed having a surface modified with a silyl group and having an aggregation ratio of 5.0 or less, the silyl group being at least one group selected from the group consisting of a silyl group represented by general formula (1): -Si(X)n-[L-CR1(OH)-C(R2)2-A]3-n (1), wherein X is the same or different, and each represents a hydroxy group or the lik...