Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888142 | Process for producing .beta.-form Si.sub.3 N.sub.4 | Kenrou Hayashi, Reiji Oguma | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888142 | Process for producing .beta.-form Si.sub.3 N.sub.4 | Kenrou Hayashi, Reiji Oguma | 1989-12-19 |