Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932507 | Method for preventing low-temperature degradation of tetragonal zirconia containing materials | Remco van Weeren, Philip J. Whalen | 1999-08-03 |
| 5759933 | Gas pressure sintered silicon nitride having high strength and stress rupture resistance | Chien-Wei Li, John Patrick Pollinger, Jean Yamanis | 1998-06-02 |
| 5637540 | Sintered silicon nitride of high toughness, strength and reliability | Chien-Wei Li | 1997-06-10 |