| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 3 | |
| #2 | United States | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Japan | 2 | |
| #5 | Republic of Korea | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Environmental technology | |
| #3 | Electrical machinery and energy | |
| #4 | Packaging and shipping | |
| #5 | Mechanical elements | |
| #6 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Takehana Kiichi | 13 |
| #2 | Takehana Koji | 8 |
| #3 | Takehana Toshiichi | 7 |
| #4 | Takehana Juichi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2019006911A1 | Power generation device | |
| JP2016005428A | Power generation device | |
| WO2015194058A1 | Power generation device | |
| JP2014008540A | Holding device and construction equipment |