- 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: 863
10-year publication summary
|
115
|
79
|
71
|
65
|
44
|
57
|
49
|
36
|
31
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 6248 |
94 |
| Rtx Corporation | 9445 |
86 |
| Pratt & Whitney Canada Corp. | 4818 |
75 |
| Siemens AG | 24386 |
46 |
| Mitsubishi Heavy Industries, Ltd. | 8787 |
46 |
| Mitsubishi Power, Ltd. | 1783 |
32 |
| General Electric Company | 13859 |
30 |
| Safran Aircraft Engines | 6306 |
30 |
| Siemens Energy, Inc. | 1708 |
24 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
22 |
| United Technologies Corporation | 2241 |
20 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 216 |
15 |
| SNECMA S.A. | 1148 |
13 |
| Rohr, Inc. | 752 |
13 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 456 |
12 |
| General Electric Technology GmbH | 1373 |
10 |
| Siemens Energy Global GmbH & Co. KG | 3020 |
10 |
| Rolls-Royce North American Technologies, Inc. | 1170 |
9 |
| Solar Turbines Incorporated | 484 |
9 |
| IHI Corporation | 3451 |
7 |
| Other owners | 260 |