Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5472919 | .beta.-silicon nitride sintered body | Mamoru Mitomo, Naoto Hirosaki | 1995-12-05 |
| 5401450 | .beta.-silicon nitride sintered body and method of producing same | Mamoru Mitomo, Naoto Hirosaki | 1995-03-28 |
| 5106550 | Method of producing ceramic rotor | Tetsuji Yogo, Yoshinori Hattori, Yasushi Katano | 1992-04-21 |