- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F03B - Machines or engines for liquids
- F03B 15/04 - Controlling by varying liquid flow of turbines
Patent holdings for IPC class F03B 15/04
Total number of patents in this class: 74
10-year publication summary
|
9
|
8
|
9
|
12
|
4
|
6
|
2
|
3
|
9
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daikin Industries, Ltd. | 10016 |
10 |
| Franklin Empire | 6 |
6 |
| Sreus Energy, LLC | 10 |
5 |
| The Chugoku Electric Power Co., Inc. | 513 |
4 |
| Hitachi Mitsubishi Hydro Corporation | 34 |
3 |
| Littoral Power Systems Inc. | 19 |
3 |
| NTN Corporation | 4975 |
2 |
| Emrgy, Inc. | 15 |
2 |
| Fluid Equipment Development Company, LLC | 89 |
2 |
| Meidensha Corporation | 887 |
2 |
| Sensus Spectrum LLC | 266 |
2 |
| Hydrokinetic Energy Corp | 9 |
2 |
| Toyota Motor Corporation | 32331 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8735 |
1 |
| Aisin AW Co., Ltd. | 2326 |
1 |
| Siemens Energy, Inc. | 1689 |
1 |
| Alstom Hydro France | 38 |
1 |
| C I Corporation Pty Ltd | 9 |
1 |
| Electricite de France | 732 |
1 |
| Exedy Corporation | 485 |
1 |
| Other owners | 23 |