- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 21/08 - Restoring position
Patent holdings for IPC class F01D 21/08
Total number of patents in this class: 28
10-year publication summary
|
1
|
4
|
2
|
5
|
7
|
0
|
1
|
1
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| General Electric Company | 18133 |
8 |
| Safran Aircraft Engines | 5739 |
7 |
| Rolls-Royce PLC | 2944 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Snecma | 1065 |
2 |
| Siemens AG | 24990 |
1 |
| SNECMA S.A. | 1160 |
1 |
| Pratt & Whitney Canada Corp. | 4215 |
1 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
1 |
| GE Infrastructure Technology, LLC | 5873 |
1 |
| Rtx Corporation | 8674 |
1 |
| Other owners | 0 |