Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4572822 | Method of recovering metals from industrial by-products | Hiroshi Tanaka | 1986-02-25 |
| 4404071 | Method of treating electrolytic solution of copper for purification and reuse thereof | Kiyomi Yamaguchi, Yuzo Asano | 1983-09-13 |