Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10392679 | Method for recovering gold from activated carbon | Akira Yoshimura, Ryosuke Tatsumi | 2019-08-27 |
| 10301180 | Activated carbon regeneration method and gold recovery method | Akira Yoshimura, Ryosuke Tatsumi | 2019-05-28 |
| 9593394 | Process of leaching gold | Masaki Sano, Yoshifumi Abe, Koji Katsukawa | 2017-03-14 |
| 9290827 | Method of leaching copper and gold from sulfide ores | Yoshifumi Abe, Koji Katsukawa, Eiki Ono | 2016-03-22 |
| 9045811 | Process of leaching gold | Masaki Sano, Yoshifumi Abe, Koji Katsukawa | 2015-06-02 |
| 8911533 | Method of recovering gold from dilute gold solution | Yoshifumi Abe, Eiki Ono, Koji Katsukawa | 2014-12-16 |
| 5266756 | Control apparatus for hydraulic elevators using fuzzy logic and speed control | — | 1993-11-30 |