- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F02K - Jet-propulsion plants
- F02K 3/115 - Heating the by-pass flow by means of indirect heat exchange
Patent holdings for IPC class F02K 3/115
Total number of patents in this class: 187
10-year publication summary
|
25
|
23
|
20
|
15
|
14
|
12
|
8
|
15
|
10
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 9094 |
51 |
| Safran Aircraft Engines | 6031 |
27 |
| Rolls-Royce North American Technologies, Inc. | 1133 |
19 |
| Rolls-Royce PLC | 2988 |
11 |
| General Electric Company | 17783 |
10 |
| Pratt & Whitney Canada Corp. | 4438 |
6 |
| Unison Industries, LLC | 203 |
6 |
| Rolls-Royce Corporation | 1719 |
5 |
| Hamilton Sundstrand Corporation | 4724 |
4 |
| MTU Aero Engines AG | 652 |
4 |
| Safran Nacelles | 667 |
4 |
| Liebherr-Aerospace Toulouse SAS | 140 |
3 |
| Sumitomo Precision Products Co., Ltd. | 292 |
3 |
| Safran Aero Boosters | 81 |
3 |
| Airbus Operations S.A.S. | 2441 |
2 |
| Airbus France | 235 |
2 |
| Airbus Helicopters | 962 |
2 |
| Echogen Power Systems, LLC | 63 |
2 |
| GKN Aerospace Sweden AB | 88 |
2 |
| Safran Aero Boosters SA | 182 |
2 |
| Other owners | 19 |