Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6593261 | Silicon nitride porous body and its production process | Naomichi Miyakawa, Kanji Arai | 2003-07-15 |
| 6565797 | Method for production of silicon nitride filter | Naomichi Miyakawa, Kanji Arai, Hideo Takahashi | 2003-05-20 |