- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/14 - Casings modified therefor
Patent holdings for IPC class F01D 25/14
Total number of patents in this class: 717
10-year publication summary
|
83
|
96
|
80
|
79
|
67
|
70
|
56
|
36
|
23
|
10
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
116 |
| General Electric Company | 18133 |
66 |
| GE Infrastructure Technology, LLC | 5873 |
52 |
| Safran Aircraft Engines | 5739 |
49 |
| Pratt & Whitney Canada Corp. | 4215 |
40 |
| Siemens AG | 24990 |
36 |
| BorgWarner Inc. | 2604 |
19 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
15 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
15 |
| Rolls-Royce Corporation | 1686 |
14 |
| Mitsubishi Power, Ltd. | 1680 |
14 |
| Rolls-Royce PLC | 2944 |
12 |
| JPMorgan Chase Bank, National Association | 10964 |
11 |
| Siemens Energy, Inc. | 1770 |
10 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
9 |
| United Technologies Corporation | 2328 |
9 |
| Continental Automotive GmbH | 5573 |
9 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
9 |
| Vitesco Technologies GmbH | 2372 |
8 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
7 |
| Other owners | 197 |