Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968426 | Method of producing porous silicon nitride ceramics having high strength and low thermal conductivity | Kiyoshi Hirao, Motohiro Toriyama, Syuzo Kanzaki, Hisayuki Imamura, Takene Hirai +1 more | 1999-10-19 |
| 5935888 | Porous silicon nitride with rodlike grains oriented | Motohiro Toriyama, Kiyoshi Hirao, Syuzo Kanzaki, Yasuhiro Shigegaki | 1999-08-10 |
| 5866245 | Silicon nitride ceramics having a high reliability and a method for production thereof | Motohiro Toriyama, Kiyoshi Hirao, Syuzo Kanzaki, Yasuhiro Shigegaki | 1999-02-02 |
| 5705449 | High-strength, high-toughness silicon nitride sinter | Kiyoshi Hirao, Shuzo Kanzaki | 1998-01-06 |
| 5674793 | Method for producing a high-strength, high-toughness silicon nitride sinter | Kiyoshi Hirao, Shuzo Kanzaki | 1997-10-07 |