- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 153
10-year publication summary
|
14
|
24
|
17
|
17
|
19
|
11
|
2
|
6
|
7
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
49 |
| General Electric Company | 18133 |
20 |
| Rolls-Royce PLC | 2944 |
13 |
| United Technologies Corporation | 2328 |
10 |
| Rolls-Royce Corporation | 1686 |
8 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
7 |
| Safran Aircraft Engines | 5739 |
7 |
| Pratt & Whitney Canada Corp. | 4215 |
5 |
| Siemens AG | 24990 |
4 |
| GE Infrastructure Technology, LLC | 5873 |
4 |
| Mitsubishi Power, Ltd. | 1680 |
4 |
| Zapadoceska Univerzita V Plzni | 56 |
2 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
2 |
| Halliburton Energy Services, Inc. | 20165 |
1 |
| SNECMA S.A. | 1160 |
1 |
| Honeywell International Inc. | 13799 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
1 |
| Doosan Skoda Power s.r.o. | 17 |
1 |
| IHI Corporation | 3268 |
1 |
| Other owners | 11 |