Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975260 | Process for preparing metal nitride powder | Isao Imai, Toshitsugu Ishii, Kouichi Sueyoshi | 1990-12-04 |
| 4640336 | Refractory for continuous casting | Kazumi Arakawa, Kenji Sugiura, Satoshi Kuroki, Sei Hiraki, Takao Suzuki +1 more | 1987-02-03 |
| 4609347 | Skid button structure | Hajime Yamashita, Masatoshi Yamazaki | 1986-09-02 |