Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10070633 | Otter board | Tadashi Tokai, Hiromi Kinoshita, Taisei Kumazawa | 2018-09-11 |
| 8943736 | High-lift otter board | Tadashi Tokai, Hiromi Kinoshita, Taisei Kumazawa | 2015-02-03 |
| 8196334 | Net-mouth inclined trawl-net apparatus | Tadashi Tokai, Daisuke Shiode, Yoshioki Ozeki, Hiroshi Kubota | 2012-06-12 |
| 8020336 | Trawl net layer-by-layer collecting device | Tadashi Tokai, Yoshioki Ozeki, Hiroshi Kubota, Chiaki Tomatsu, Tetsuro Ino | 2011-09-20 |