Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11407900 | Pearlescent pigment for security purposes including organic or inorganic fluorescent material | Kyung-don Nam, Jae-Il Jeong, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim +1 more | 2022-08-09 |
| 11370923 | Black pearlescent pigment using natural charcoal and production method thereof | Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang | 2022-06-28 |
| 10285918 | Cosmetic composition | Min-Hee Choi, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang | 2019-05-14 |
| 9629796 | Colored glossy pigment using vegetable type natural dye and method for preparing same | Min-Hee Choi, Kwang-Choong Kang, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang | 2017-04-25 |