- 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 |