US Patent Issued to Sumitomo Osaka Cement on Sept. 22 for "Surface-modified zinc oxide particles, liquid dispersion, and cosmetic" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,740,926, issued on Sept. 22, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Surface-modified zinc oxide particles, liquid dispersion, and cosmetic" was invented by Syunsuke Suma (Tokyo) and Masahiro Nobe (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Surface-modified zinc oxide particles which have a silane coupling agent having an alkoxy group on surfaces thereof, in which d50 when measured with a laser diffraction/scattering type particle size distribution-measuring instrument by the following measurement method is 4 micro metre or less. (Measurement method) 10 g of the surface-modified zinc oxide particles, 88 g of cyclopentasiloxan...