Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5691261 | Silicon nitride ceramic | Akira Takahashi, Masaaki Masuda | 1997-11-25 |
| 5611877 | Jigs for manufacture of joined ceramic structure, and method for manufacturing joined ceramic structure by use of jigs | Toshihiro Yoshida | 1997-03-18 |