ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,396,940, issued on Aug. 26, was assigned to AMOREPACIFIC Corp. (Seoul, South Korea).
"Additive composition for preventing vitamin C precipitation" was invented by Yoonkyun Hwang (Yongin-si, South Korea), Jihye An (Yongin-si, South Korea), Dajeong Lee (Yongin-si, South Korea) and Youngsuk Cho (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present specification describes an additive composition for preventing the precipitation of vitamin C in a cosmetic composition containing 15 wt % or more of vitamin C. The additive composition of the present invention comprises one or more of 3-O-ethyl ascorbic acid and caffeine as an active...