Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667264 | Silicon nitride sintered material and process for production thereof | Kiyoshi Araki, Tsuneaki Ohashi, Masaaki Masuda | 2003-12-23 |
| 6541406 | Silicon nitride sintered material and process for production thereof | Kiyoshi Araki, Tsuneaki Ohashi, Masaaki Masuda | 2003-04-01 |