Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11694827 | Light-colored magnetic particles having improved durability and chemical resistance | Hong Keon Kim, Su-dong Kim, Hyun-Soo Kim, E Den Kim, Hye Jun Choi +1 more | 2023-07-04 |
| 11590792 | Security device using light reflection property | Su-dong Kim, Hong Keon Kim, Hyun-Soo Kim, E Den Kim, Hye Jun Choi | 2023-02-28 |
| 11541680 | Photonic crystal film, method for manufacturing same, and anti-forgery article comprising same | Shin-Hyun Kim, Gun Ho Lee, Soo Dong Kim, Ju Hee Kang, Hong Keon Kim +2 more | 2023-01-03 |
| 9721705 | Magnetic particle having high-reflective protective membrane and method for producing same | Soo Dong Kim | 2017-08-01 |
| 8289109 | Electromagnetic bandgap pattern structure, method of manufacturing the same, and security product using the same | Jong Won Yu, Won Gyu Lim, Hyeong Seok Jang, Dong Hoon Shin, Jin Ho Ryu +1 more | 2012-10-16 |
| 7981208 | Gamma ray-sensitive phthalocyanine compound of poly cross-linking type and ink composition comprising the same | Shi Surk Kim, Kyung Mi Lee, Ku Won Seo, Sang Geun Lee, Sun Hong Yoon +1 more | 2011-07-19 |