Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6563924 | Subscriber matching circuit for electronic exchange | — | 2003-05-13 |
| 6503941 | Ferulic ester derivative, 3,9-diferulylcoumestrol and cosmetic product containing same | Hyeong-Bae Pyo, Chung Woo Lee, Sung Min Park, Jeong Jae Lee, Jin Hwa Kim | 2003-01-07 |