- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F01D - Non-positive-displacement machines or engines, e.g. steam turbines
- F01D 25/02 - De-icing means for engines having icing phenomena
Patent holdings for IPC class F01D 25/02
Total number of patents in this class: 242
10-year publication summary
|
21
|
36
|
36
|
38
|
17
|
39
|
17
|
13
|
15
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
33 |
| Pratt & Whitney Canada Corp. | 4215 |
23 |
| Safran Aircraft Engines | 5739 |
23 |
| General Electric Company | 18133 |
18 |
| Rolls-Royce PLC | 2944 |
17 |
| Safran Aero Boosters SA | 180 |
13 |
| Rohr, Inc. | 653 |
10 |
| The Boeing Company | 19843 |
7 |
| Rolls-Royce Corporation | 1686 |
7 |
| United Technologies Corporation | 2328 |
6 |
| Honeywell International Inc. | 13799 |
5 |
| Hamilton Sundstrand Corporation | 4525 |
5 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
5 |
| Rosemount Aerospace Inc. | 747 |
5 |
| GE Infrastructure Technology, LLC | 5873 |
5 |
| Goodrich Corporation | 2081 |
4 |
| Siemens AG | 24990 |
3 |
| President and Fellows of Harvard College | 5792 |
3 |
| SNECMA S.A. | 1160 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Other owners | 46 |