- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 1/24 - Non-positive-displacement machines or engines, e.g. steam turbines characterised by counter-rotating rotors subjected to same working-fluid stream without intermediate stator blades or the like
Patent holdings for IPC class F01D 1/24
Total number of patents in this class: 75
10-year publication summary
|
3
|
2
|
1
|
12
|
7
|
5
|
6
|
0
|
3
|
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 |
17 |
| Safran Aircraft Engines | 5739 |
14 |
| Rtx Corporation | 8674 |
8 |
| Rolls-Royce PLC | 2944 |
3 |
| Pratt & Whitney Canada Corp. | 4215 |
2 |
| 7142871 Canada Inc. | 8 |
2 |
| Nidec Corporation | 2579 |
2 |
| The Boeing Company | 19843 |
1 |
| Honeywell International Inc. | 13799 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| United Technologies Corporation | 2328 |
1 |
| Toshiba Corporation | 12017 |
1 |
| Caterpillar Inc. | 8877 |
1 |
| ABB Turbo Systems AG | 110 |
1 |
| Baltico GmbH | 3 |
1 |
| Danfoss (Tianjin) Ltd. | 83 |
1 |
| Delta T Corporation | 37 |
1 |
| Embry-Riddle Aeronautical University, Inc. | 36 |
1 |
| Evapco, Inc. | 244 |
1 |
| Exergy S.p.A. | 25 |
1 |
| Other owners | 14 |