- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 11/20 - Actively adjusting tip-clearance
Patent holdings for IPC class F01D 11/20
Total number of patents in this class: 163
10-year publication summary
|
17
|
17
|
19
|
11
|
2
|
6
|
7
|
7
|
6
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 10127 |
52 |
| General Electric Company | 13915 |
26 |
| Rolls-Royce PLC | 3224 |
12 |
| United Technologies Corporation | 2218 |
9 |
| Rolls-Royce North American Technologies, Inc. | 1130 |
8 |
| Rolls-Royce Corporation | 1680 |
7 |
| Safran Aircraft Engines | 6727 |
7 |
| Pratt & Whitney Canada Corp. | 5517 |
5 |
| Siemens AG | 23996 |
4 |
| GE Infrastructure Technology, LLC | 6159 |
4 |
| Mitsubishi Power, Ltd. | 1833 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 9168 |
2 |
| GE Avio S.r.l. | 336 |
2 |
| Siemens Energy Global GmbH & Co. KG | 3432 |
2 |
| Halliburton Energy Services, Inc. | 21309 |
1 |
| SNECMA S.A. | 1145 |
1 |
| Honeywell International Inc. | 12776 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3790 |
1 |
| IHI Corporation | 3527 |
1 |
| Mitsubishi Hitachi Power Systems, Ltd. | 991 |
1 |
| Other owners | 13 |