Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989841 | Metal continuously melting and retaining furnace | Kenzo Tokumasu, Katsuo Taki, Masaaki Nakamura, Tatsuo Akino | 1991-02-05 |
| 4670050 | Method of treating molten aluminum by removing hydrogen gas and nonmetallic inclusions therefrom | Shigemi Tanimoto, Kazuo Toyoda | 1987-06-02 |
| 4373950 | Process of preparing aluminum of high purity | Hideo Shingu, Kozo Arai | 1983-02-15 |