Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641434 | Silicon nitride powder | Tetsuo Yamada, Tetsuo Nakayasu | 1997-06-24 |
| 5595718 | Process for producing a crystalline silicon nitride powder | Tetsuo Yamada, Yasukazu Kondo, Hideo Nakamura, Tadayuki Mitani | 1997-01-21 |