Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10781656 | Undersea mining base, mining base monitoring device, and chimney avoidance method for seabed deposit | Yoshiyasu Watanabe | 2020-09-22 |
| 9162412 | Briquetting machine control device | Yoshiyuki Sunaga, Koji Tsukada, Isao Sekiguchi | 2015-10-20 |
| 9140636 | Briquette inspection device and briquette inspection method for measuring weight, volume, and crush strength | Koji Tsukada | 2015-09-22 |
| 7364124 | Elevator device for television camera | Hisanao Aoki | 2008-04-29 |