Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889834 | SiC-Al.sub.2 O.sub.3 composite sintered bodies and method of producing the same | Koichi Niihara | 1989-12-26 |
| 4889835 | SiC-Al.sub.2 O.sub.3 composite sintered bodies and method of producing the same | Koichi Niihara | 1989-12-26 |