Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877760 | Aluminum nitride sintered body with high thermal conductivity and process for producing same | Akiyasu Okuno, Masakazu Watanabe | 1989-10-31 |
| 4800137 | Composite layer aluminum nitride base sintered body | Akiyasu Okuno, Masakazu Watanabe | 1989-01-24 |