Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5919282 | Process for vacuum refining molten steel and apparatus thereof | Kazuo Oonuki, Kazuhisa Fukuda, Masao Iguchi, Hidekazu Kakizoe, Hiroki Gofuku +2 more | 1999-07-06 |
| 4450005 | Metal refining method | Yasuyuki Nakao, Kazuo Okohira | 1984-05-22 |