| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | China | 3 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Hydraulic engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kukita Shoko | 13 |
| #2 | Terata Yoko | 13 |
| #3 | Terata Keiichi | 13 |
| #4 | Terata Hiroshi | 11 |
| #5 | Terata Hiroko | 11 |
| #6 | Ishido Akira | 4 |
| #7 | Shi Huming | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2017284047A1 | Sluice gate | |
| US2019194894A1 | Sluice gate | |
| US2018258600A1 | Sluice gate | |
| EP2894259A1 | Sluice |