- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 69
10-year publication summary
5
|
10
|
9
|
10
|
14
|
4
|
7
|
2
|
3
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Daikin Industries, Ltd. | 9495 |
10 |
Franklin Empire | 6 |
6 |
The Chugoku Electric Power Co., Inc. | 498 |
4 |
Littoral Power Systems Inc. | 14 |
3 |
NTN Corporation | 5008 |
2 |
Emrgy, Inc. | 13 |
2 |
Fluid Equipment Development Company, LLC | 84 |
2 |
Hitachi Mitsubishi Hydro Corporation | 29 |
2 |
Meidensha Corporation | 823 |
2 |
Sensus Spectrum LLC | 246 |
2 |
GE Infrastructure Technology, LLC | 5873 |
2 |
Hydrokinetic Energy Corp | 8 |
2 |
Sreus Energy, LLC | 5 |
2 |
Toyota Motor Corporation | 28582 |
1 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
Aisin AW Co., Ltd. | 2430 |
1 |
Siemens Energy, Inc. | 1770 |
1 |
Alstom Hydro France | 38 |
1 |
C I Corporation Pty Ltd | 9 |
1 |
Electricite de France | 695 |
1 |
Other owners | 21 |