- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/14 - Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
Patent holdings for IPC class F01D 11/14
Total number of patents in this class: 182
10-year publication summary
|
28
|
13
|
20
|
18
|
12
|
4
|
16
|
9
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9094 |
35 |
| General Electric Company | 17783 |
29 |
| Pratt & Whitney Canada Corp. | 4438 |
12 |
| Rolls-Royce North American Technologies, Inc. | 1133 |
11 |
| Safran Aircraft Engines | 6031 |
11 |
| Rolls-Royce PLC | 2988 |
9 |
| GE Infrastructure Technology, LLC | 6114 |
8 |
| United Technologies Corporation | 2259 |
7 |
| Siemens AG | 24573 |
6 |
| Rolls-Royce Corporation | 1719 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8531 |
5 |
| Siemens Energy, Inc. | 1731 |
5 |
| Siemens Energy Global GmbH & Co. KG | 2828 |
4 |
| Ecole Centrale de Lyon | 123 |
3 |
| Ecole Nationale D'ingenieurs de Saint-Etienne | 19 |
3 |
| SNECMA S.A. | 1150 |
2 |
| Centre National de La Recherche Scientifique | 10091 |
2 |
| MTU Aero Engines AG | 652 |
2 |
| Safran Helicopter Engines | 724 |
2 |
| Ansaldo Energia Switzerland AG | 284 |
1 |
| Other owners | 19 |