Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5817285 | Continuous preparation of silicon nitride powder | Hirofumi Fukuoka, Yoshiharu Konya | 1998-10-06 |
| 5573689 | Fluidized bed reactor for preparing metal nitride | Hirofumi Fukuoka, Yoshiharu Konya, Ichiro Ishizaka | 1996-11-12 |
| 5456896 | Preparation of high alpha-type silicon nitride powder | Hirofumi Fukuoka, Masaki Watanabe, Yoshiharu Konya | 1995-10-10 |
| 5441694 | Preparation of high .alpha.-type silicon nitride powder | Hirofumi Fukuoka, Yoshiharu Konya, Masaki Watanabe | 1995-08-15 |
| 5232677 | Preparation of silicon nitride powder by partially nitriding in a fluidized bed and then completing nitridation in a moving bed | Hirofumi Fukuoka, Mutsuo Shimizu, Hidemitsu Ochiai, Hideaki Shimizu | 1993-08-03 |
| 5210250 | Method for decolorizing purification of halogenated silane | Isao Watanuki, Hiroshi Tsumura, Nobuhiko Kodana, Kazushi Satoh, Hidehiko Aonuma | 1993-05-11 |
| 5073358 | Preparation of silicon nitride powder | Mutsuo Shimizu, Hirofumi Fukuoka | 1991-12-17 |