Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364449 | Process for refining crude material for copper or copper alloy | Takashi Nakamura, Kenji Osumi, Kiyomasa Oga, Motohiro Arai, Ryukichi Ikeda +2 more | 1994-11-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364449 | Process for refining crude material for copper or copper alloy | Takashi Nakamura, Kenji Osumi, Kiyomasa Oga, Motohiro Arai, Ryukichi Ikeda +2 more | 1994-11-15 |