- All sections
- E - Fixed constructions
- E02B - Hydraulic engineering
- E02B 9/04 - Free-flow canals or flumesIntakes
Patent holdings for IPC class E02B 9/04
Total number of patents in this class: 50
10-year publication summary
|
2
|
6
|
4
|
4
|
1
|
5
|
3
|
1
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Himeji-ecotech Co., Ltd. | 4 |
3 |
| Tohoku Electric Power Co., Inc. | 29 |
3 |
| The Chugoku Electric Power Co., Inc. | 511 |
2 |
| Emrgy, Inc. | 15 |
2 |
| Kanae Corporation | 2 |
2 |
| KOA Corporation | 427 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
2 |
| Sea to Sky Energy Solutions Corp. | 7 |
2 |
| W.L. French Hydropower Holdings LLC | 28 |
2 |
| Aqseptence Group, Inc. | 79 |
1 |
| China General Nuclear Power Corporation | 285 |
1 |
| China Institute of Water Resources and Hydropower Research | 103 |
1 |
| China Nuclear Power Engineering Co., Ltd. | 296 |
1 |
| Electricite de France | 754 |
1 |
| Guangdong Nuclear Power Joint Venture Co., Ltd. | 16 |
1 |
| Hydro Component Systems, LLC | 7 |
1 |
| Johnson Screens, Inc. | 44 |
1 |
| KSB Aktiengesellschaft | 154 |
1 |
| Mathers Hydraulics Technologies Pty Ltd | 21 |
1 |
| MJ2 Technologies | 2 |
1 |
| Other owners | 19 |