Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8182575 | Producing method of direct reduced iron | Yuki Kuwauchi, Wataru Nagai, Kazuhisa Fukuda, Takashi Sawai | 2012-05-22 |
| 5919282 | Process for vacuum refining molten steel and apparatus thereof | Yosuke Hoshijima, Kazuo Oonuki, Kazuhisa Fukuda, Masao Iguchi, Hidekazu Kakizoe +2 more | 1999-07-06 |
| 5413623 | Process and apparatus for vacuum degassing molten steel | Kazuo Oonuki, Teruyoshi Hiraoka, Hiroshi Nagahama, Kazuhisa Fukuda, Akira Nobumoto +2 more | 1995-05-09 |