- All sections
- E - Fixed constructions
- E02B - Hydraulic engineering
- E02B 8/08 - Fish passesPassages for rafts or boats
Patent holdings for IPC class E02B 8/08
Total number of patents in this class: 89
10-year publication summary
|
8
|
13
|
6
|
10
|
11
|
7
|
12
|
10
|
10
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kalasydan Oy | 10 |
7 |
| Littoral Power Systems Inc. | 19 |
5 |
| China Three Gorges Corporation | 178 |
5 |
| Riverrestoration.org, LLC | 4 |
4 |
| China Three Gorges University | 12 |
3 |
| KSB Aktiengesellschaft | 165 |
3 |
| Percheron Power, LLC | 6 |
3 |
| W.L. French Hydropower Holdings LLC | 13 |
3 |
| Battelle Memorial Institute | 2476 |
2 |
| Eth Zurich | 1270 |
2 |
| Evoqua Water Technologies LLC | 914 |
2 |
| Natel Energy, Inc. | 11 |
2 |
| P.v. Flood Control Corp. | 30 |
2 |
| Nanjing Hydraulic Research Institute | 31 |
2 |
| Vagverket | 2 |
2 |
| Anhui University of Science & Technology | 24 |
2 |
| GIS Gas Infusion Systems Inc. | 17 |
2 |
| Powerchina Guiyang Engineering Corporation Limited | 7 |
2 |
| Transmoro AB | 4 |
2 |
| Fäh Maschinen- und Anlagenbau AG | 3 |
2 |
| Other owners | 32 |