Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5219500 | Silicon nitride sintered body and process for preparation thereof | Makoto Yoshida, Masahiro Sato, Kazunori Koga, Kazumi Osamura, Shoji Kousaka +2 more | 1993-06-15 |
| 4920085 | Silicon nitride sintered body and process for preparation thereof | Makoto Yoshida, Masahiro Sato, Kazunori Koga, Kazumi Osamura, Shoji Kousaka +2 more | 1990-04-24 |