Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997703 | Firing furnace and firing method | Yoshihiko Kurashima, Shigeru Hanzawa, Michitaka Hidaka | 2006-02-14 |
| 5854156 | Granulated powder for producing silicon nitride sintered body | Hisayoshi Nonaka | 1998-12-29 |
| 5635432 | High-strength silicon nitride sintered body | Hisayoshi Nonaka | 1997-06-03 |
| 5306895 | Corrosion-resistant member for chemical apparatus using halogen series corrosive gas | Ryusuke Ushikoshi, Kazuhiro Nobori, Yusuke Niori, Koichi Umemoto, Hiromichi Kobayashi +1 more | 1994-04-26 |