ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,845, issued on June 9, was assigned to MIYOSHI OIL & FAT Co. LTD. (Tokyo).
"Light-resistant, heat-resistant and durable ultraviolet absorber" was invented by Koji Kawai (Tokyo), Akira Yashita (Tokyo), Nobuhiro Kaneko (Tokyo) and Kotaro Kaneko (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an ultraviolet absorber capable of efficiently absorbing harmful lights in a wavelength region of 380 to 400 nm; and suppressing the absorption of lights having a wavelength of not shorter than 400 nm, which constitutes the cause of yellowing at early stages. The ultraviolet absorber can thus be used to produce a member superior in appearance as b...