Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877760 | Aluminum nitride sintered body with high thermal conductivity and process for producing same | Masakazu Watanabe, Kazuhiko Ikoma | 1989-10-31 |
| 4840853 | Surface structure of AlN substrate and a process for producing the same | Satoshi Iio | 1989-06-20 |
| 4800137 | Composite layer aluminum nitride base sintered body | Masakazu Watanabe, Kazuhiko Ikoma | 1989-01-24 |