Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962291 | Apparatus for production metal powder having a shielded runner nozzle gate | Noboru Demukai | 1990-10-09 |
| 4919714 | Method and apparatus for refining steel | Saburo Sugiura, Hiroya Nakata, Tetsuo Okamoto, Yoshio Inagaki, Keiichi Mizuguchi +1 more | 1990-04-24 |
| 4531971 | Method of and apparatus for melting scrap | Sabro Sugiura, Kenji Kanada, Noboru Demukai, Tetuo Okamoto | 1985-07-30 |