- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/24 - Actively adjusting tip-clearance by selectively cooling or heating stator or rotor components
Patent holdings for IPC class F01D 11/24
Total number of patents in this class: 469
10-year publication summary
|
37
|
53
|
65
|
58
|
49
|
33
|
34
|
13
|
21
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
80 |
| Safran Aircraft Engines | 5739 |
77 |
| General Electric Company | 18133 |
53 |
| GE Infrastructure Technology, LLC | 5873 |
44 |
| Rolls-Royce PLC | 2944 |
26 |
| Rolls-Royce Corporation | 1686 |
21 |
| Pratt & Whitney Canada Corp. | 4215 |
18 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
18 |
| Siemens AG | 24990 |
14 |
| Mitsubishi Power, Ltd. | 1680 |
12 |
| SNECMA S.A. | 1160 |
10 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
10 |
| Snecma | 1065 |
8 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
6 |
| Siemens Energy, Inc. | 1770 |
6 |
| United Technologies Corporation | 2328 |
4 |
| Ansaldo Energia Switzerland AG | 293 |
4 |
| MTU Aero Engines GmbH | 565 |
4 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
4 |
| GE Avio S.r.l. | 223 |
3 |
| Other owners | 47 |