Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882109 | Process of preparing zirconia-coated silicon nitride sintered member | Tomonori Takahashi | 1989-11-21 |
| 4830991 | Silicon nitride sintered bodies | — | 1989-05-16 |
| 4822645 | Metallizing paste and a process for metallizing ceramic articles by using such a metallizing paste | Isao Oda, Nobuo Tsuno | 1989-04-18 |
| 4816349 | Zirconia-coated silicon nitride sintered member | Tomonori Takahashi | 1989-03-28 |
| 4804589 | Silicon carbide sintered members | Tomonori Takahashi | 1989-02-14 |
| 4801565 | Silicon nitride sintered bodies and a method of manufacturing the same | — | 1989-01-31 |