Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716133 | Method for production of silicon nitride sintered body | Kiyoshi Yokoyama, Makoto Yoshida | 1987-12-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716133 | Method for production of silicon nitride sintered body | Kiyoshi Yokoyama, Makoto Yoshida | 1987-12-29 |