- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- 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: 216
10-year publication summary
|
17
|
14
|
13
|
19
|
8
|
11
|
8
|
12
|
10
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10082 |
54 |
| General Electric Company | 13888 |
23 |
| Rolls-Royce Corporation | 1676 |
23 |
| United Technologies Corporation | 2220 |
19 |
| Rolls-Royce North American Technologies, Inc. | 1127 |
19 |
| Pratt & Whitney Canada Corp. | 5472 |
13 |
| Siemens AG | 24033 |
11 |
| GE Infrastructure Technology, LLC | 6171 |
9 |
| MTU Aero Engines GmbH | 421 |
7 |
| Siemens Energy, Inc. | 1685 |
5 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 9115 |
4 |
| Hamilton Sundstrand Corporation | 5016 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
2 |
| Safran Aircraft Engines | 6671 |
2 |
| Universitat der Bundeswehr Munchen | 50 |
2 |
| General Electric Company Polska Sp. z o.o. | 86 |
2 |
| Mitsubishi Power, Ltd. | 1832 |
2 |
| Siemens Energy Global GmbH & Co. KG | 3335 |
2 |
| Halliburton Energy Services, Inc. | 21320 |
1 |
| Other owners | 9 |