Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806510 | Silicon nitride sintered body and method for producing same | Tadahiko Miyoshi | 1989-02-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806510 | Silicon nitride sintered body and method for producing same | Tadahiko Miyoshi | 1989-02-21 |