| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 3 | |
| #2 | Japan | 3 | |
| #3 | Republic of Korea | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | EPO (European Patent Office) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Akimoto Hiromichi | 13 |
| Publication | Filing date | Title |
|---|---|---|
| CN104769276A | Single bucket drag-type turbine and wave power generator | |
| CN103649525A | Natural energy extraction device | |
| JP2013032771A | Natural energy extraction apparatus |