- 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: 179
10-year publication summary
|
25
|
28
|
13
|
20
|
18
|
12
|
4
|
15
|
9
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
34 |
| General Electric Company | 18133 |
26 |
| Safran Aircraft Engines | 5739 |
12 |
| Pratt & Whitney Canada Corp. | 4215 |
11 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
11 |
| Rolls-Royce PLC | 2944 |
9 |
| GE Infrastructure Technology, LLC | 5873 |
8 |
| United Technologies Corporation | 2328 |
7 |
| Siemens AG | 24990 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
6 |
| Siemens Energy, Inc. | 1770 |
6 |
| Rolls-Royce Corporation | 1686 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
4 |
| Ecole Centrale de Lyon | 118 |
3 |
| Ecole Nationale D'ingenieurs de Saint-Etienne | 19 |
3 |
| SNECMA S.A. | 1160 |
2 |
| Centre National de La Recherche Scientifique | 9632 |
2 |
| MTU Aero Engines AG | 622 |
2 |
| Safran Helicopter Engines | 676 |
2 |
| Ansaldo Energia Switzerland AG | 293 |
1 |
| Other owners | 18 |