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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.

KAO Corporation Dual Hydrogel Patent, Apr 21

KAO Corporation has been granted US Patent 12605311B2 for a dual hydrogel structure comprising a continuous phase of a first hydrogel and a dispersed second hydrogel phase. The patent specifies a ratio of local minimum load after break to breaking load of 0.1 or more, covering 23 claims with inventors Saki Hamada and Shohei Toyota. The application was filed on February 5, 2021, under application number 18275832.