- 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: 174
10-year publication summary
|
19
|
25
|
23
|
20
|
15
|
14
|
11
|
7
|
14
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rtx Corporation | 8674 |
50 |
| Safran Aircraft Engines | 5739 |
24 |
| Rolls-Royce North American Technologies, Inc. | 1079 |
19 |
| Rolls-Royce PLC | 2944 |
9 |
| General Electric Company | 18133 |
8 |
| Unison Industries, LLC | 195 |
6 |
| Pratt & Whitney Canada Corp. | 4215 |
5 |
| Rolls-Royce Corporation | 1686 |
5 |
| Hamilton Sundstrand Corporation | 4525 |
4 |
| Safran Nacelles | 587 |
4 |
| Liebherr-Aerospace Toulouse SAS | 135 |
3 |
| MTU Aero Engines AG | 622 |
3 |
| Safran Aero Boosters | 68 |
3 |
| Airbus Operations S.A.S. | 2407 |
2 |
| Airbus France | 273 |
2 |
| Airbus Helicopters | 984 |
2 |
| Echogen Power Systems, LLC | 63 |
2 |
| Safran Aero Boosters SA | 180 |
2 |
| Sumitomo Precision Products Co., Ltd. | 273 |
2 |
| Raytheon Technologies Corporation | 332 |
2 |
| Other owners | 17 |