Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336646 | Method of surface strengthening alumina-zirconia composites using MoO.sub.2 | Yu-Seon Shin, Nong M. Whang, Duk Yong Yoon, Deug Joong Kim | 1994-08-09 |
| 5306364 | High toughness tungsten based heavy alloy containing La and Ca. manufacturing thereof | Seong Hyeon Hong, Duk Yong Yoon, Woon-Hyung Baek | 1994-04-26 |