- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F23R - Generating combustion products of high pressure or high velocity, e.g. gas-turbine combustion chambers
- F23R 3/20 - Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants incorporating fuel injection means
Patent holdings for IPC class F23R 3/20
Total number of patents in this class: 159
10-year publication summary
|
19
|
18
|
21
|
11
|
9
|
6
|
7
|
12
|
5
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ansaldo Energia Switzerland AG | 283 |
19 |
| GE Infrastructure Technology, LLC | 6134 |
18 |
| Rtx Corporation | 9183 |
12 |
| IHI Corporation | 3373 |
9 |
| General Electric Company | 17222 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8592 |
7 |
| Safran Aircraft Engines | 6097 |
7 |
| Mitsubishi Power, Ltd. | 1749 |
6 |
| Alstom Technology Ltd | 1136 |
5 |
| Rolls-Royce PLC | 3017 |
5 |
| Siemens AG | 24606 |
4 |
| Woodward, Inc. | 640 |
4 |
| Siemens Energy, Inc. | 1733 |
3 |
| Power Systems Mfg., LLC | 43 |
3 |
| Rolls-Royce North American Technologies, Inc. | 1158 |
3 |
| SNECMA S.A. | 1149 |
2 |
| Pratt & Whitney Canada Corp. | 4466 |
2 |
| Raytheon Company | 8426 |
2 |
| University of Florida Research Foundation, Inc. | 3971 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 995 |
2 |
| Other owners | 36 |