Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5177038 | Silicon nitride sintered bodies | Tomonori Takahashi, Keiji Matsuhiro | 1993-01-05 |
| 5145620 | Method of producing a silicon nitride sintered body | Hiroaki Sakai | 1992-09-08 |
| 5096859 | Silicon nitride sintered body and method of producing the same | Hiroaki Sakai | 1992-03-17 |