Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616754 | Segregation reducing agent consisting of curdlan and alkaline solution and hydraulic composition containing the segregation reducing agent | Young-Hoon Park, Jung Heon Lee, Mi-Kyoung Kim, Kyung-hee JUNG | 2003-09-09 |
| 6504450 | Signal process apparatus for phase-shifting N number of signals inputted thereto | Duk-Yong Kim, Yoon-Bae Lee, Gyu-Sang Hwang, Sang-Wook Bang, Chang-Yun Seo +4 more | 2003-01-07 |