Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4371392 | Process for refining a molten metal | Minao Ito, Saburo Sugiura, Kiyoichi Yamano, Shizunori Hayakawa | 1983-02-01 |
| 4308415 | Process for refining a molten metal and an apparatus therefor | Minao Ito, Saburo Sugiura, Kiyoichi Yamano, Shizunori Hayakawa | 1981-12-29 |