- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/30 - Exhaust heads, chambers, or the like
Patent holdings for IPC class F01D 25/30
Total number of patents in this class: 896
10-year publication summary
|
79
|
71
|
65
|
44
|
57
|
49
|
36
|
34
|
39
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 6213 |
95 |
| Rtx Corporation | 9851 |
87 |
| Pratt & Whitney Canada Corp. | 5210 |
81 |
| Mitsubishi Heavy Industries, Ltd. | 9016 |
50 |
| Siemens AG | 24236 |
46 |
| Mitsubishi Power, Ltd. | 1819 |
34 |
| Safran Aircraft Engines | 6532 |
31 |
| General Electric Company | 13819 |
30 |
| Siemens Energy, Inc. | 1694 |
24 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
22 |
| United Technologies Corporation | 2220 |
20 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 228 |
16 |
| SNECMA S.A. | 1148 |
13 |
| Rohr, Inc. | 774 |
13 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 467 |
13 |
| General Electric Technology GmbH | 1345 |
11 |
| Siemens Energy Global GmbH & Co. KG | 3244 |
11 |
| Solar Turbines Incorporated | 504 |
10 |
| GKN Aerospace Sweden AB | 95 |
8 |
| Rolls-Royce North American Technologies, Inc. | 1133 |
8 |
| Other owners | 273 |