Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5173458 | Silicon nitride sintered body and process for producing the same | Takao Nishioka, Kenji Matsunuma, Koichi Sogabe, Masaya Miyake, Takehisa Yamamoto +1 more | 1992-12-22 |