- 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: 835
10-year publication summary
|
120
|
88
|
74
|
68
|
48
|
61
|
64
|
37
|
33
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GE Infrastructure Technology, LLC | 6163 |
92 |
| Rtx Corporation | 9242 |
86 |
| Pratt & Whitney Canada Corp. | 4477 |
66 |
| Siemens AG | 24544 |
46 |
| Mitsubishi Heavy Industries, Ltd. | 8573 |
44 |
| Mitsubishi Power, Ltd. | 1747 |
32 |
| General Electric Company | 17076 |
30 |
| Safran Aircraft Engines | 6172 |
30 |
| Siemens Energy, Inc. | 1697 |
24 |
| Mitsubishi Hitachi Power Systems, Ltd. | 993 |
22 |
| United Technologies Corporation | 2249 |
20 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 212 |
15 |
| SNECMA S.A. | 1145 |
13 |
| Rohr, Inc. | 745 |
13 |
| Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | 440 |
11 |
| General Electric Technology GmbH | 1487 |
9 |
| Rolls-Royce North American Technologies, Inc. | 1153 |
9 |
| Siemens Energy Global GmbH & Co. KG | 2872 |
9 |
| Mitsubishi Heavy Industries Compressor Corporation | 625 |
7 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3029 |
7 |
| Other owners | 250 |