US Patent Issued to KAO on Nov. 25 for "Patch sheet for skin, method for using same, ultraviolet sensing method, and method for evaluating ultraviolet protection performance" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,563, issued on Nov. 25, was assigned to KAO Corp. (Tokyo).

"Patch sheet for skin, method for using same, ultraviolet sensing method, and method for evaluating ultraviolet protection performance" was invented by Ryota Shiiba (Utsunomiya, Japan), Miyuki Sudo (Arakawa-ku, Japan), Takehiko Tojo (Utsunomiya, Japan) and Takashi Fukui (Kawasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A skin-attaching sheet including an attaching portion configured for attaching to skin. The attaching portion includes a color-changeable layer that changes color following exposure to ultraviolet rays, and the attaching portion has a color difference (triangleE*...