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KAO Corporation External Skin Preparation Patent US12605315B2

USPTO granted Patent US12605315B2 to KAO Corporation on April 21, 2026, for an external skin preparation containing tabular metal oxide (A) with thickness 30-360 nm and aspect ratio 50-300, combined with UV absorbent (B) in a mass ratio of 0.1 to 5. The patent also covers formulations combining metal oxide (A), UV scattering agent (C), and nonvolatile oil (D), plus a method for protecting skin from IR and UV rays. Inventors are Takashi Fukui and Noriko Tejima, with 11 claims allowed under CPC classifications A61K 8/29, A61K 8/27, A61K 8/92, and related categories.