- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/22 - Actively adjusting tip-clearance by mechanically actuating the stator or rotor components, e.g. moving shroud sections relative to the rotor
Patent holdings for IPC class F01D 11/22
Total number of patents in this class: 194
10-year publication summary
|
29
|
28
|
17
|
14
|
13
|
19
|
8
|
10
|
8
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
51 |
| United Technologies Corporation | 2328 |
19 |
| Rolls-Royce Corporation | 1686 |
18 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
16 |
| General Electric Company | 18133 |
15 |
| Pratt & Whitney Canada Corp. | 4215 |
13 |
| Siemens AG | 24990 |
11 |
| MTU Aero Engines GmbH | 565 |
9 |
| GE Infrastructure Technology, LLC | 5873 |
9 |
| Siemens Energy, Inc. | 1770 |
5 |
| Doosan Heavy Industries & Construction Co., Ltd. | 604 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
3 |
| Hamilton Sundstrand Corporation | 4525 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
2 |
| Mitsubishi Power, Ltd. | 1680 |
2 |
| Halliburton Energy Services, Inc. | 20165 |
1 |
| Robert Bosch GmbH | 40953 |
1 |
| Rolls-Royce PLC | 2944 |
1 |
| Safran Aero Boosters SA | 180 |
1 |
| Other owners | 7 |