Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517168 | Grinding amorphous silicon nitride powder prior to heating to produce crystalline silicon nitride powder | Takashi Kawahito, Tetsuo Yamada | 1985-05-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517168 | Grinding amorphous silicon nitride powder prior to heating to produce crystalline silicon nitride powder | Takashi Kawahito, Tetsuo Yamada | 1985-05-14 |