- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/22 - Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
Patent holdings for IPC class B64C 27/22
Total number of patents in this class: 297
10-year publication summary
|
26
|
30
|
37
|
29
|
20
|
45
|
31
|
16
|
23
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Airbus Helicopters | 963 |
27 |
| Textron Innovations Inc. | 2233 |
26 |
| Bell Helicopter Textron Inc. | 1058 |
17 |
| Sikorsky Aircraft Corporation | 1115 |
16 |
| The Boeing Company | 19958 |
12 |
| Wisk Aero LLC | 210 |
12 |
| SZ DJI Technology Co., Ltd | 6827 |
9 |
| Joby Aero, Inc. | 282 |
9 |
| Amazon Technologies, Inc. | 26290 |
8 |
| Piasecki Aircraft Corporation | 38 |
7 |
| Kitty Hawk Corporation | 294 |
6 |
| Leonardo S.p.A. | 656 |
6 |
| Aergility Corporation | 7 |
6 |
| Denso Corporation | 24016 |
4 |
| Karem Aircraft, Inc. | 38 |
4 |
| Autoflight (Kunshan) Co., Ltd. | 68 |
4 |
| Honda Motor Co., Ltd. | 25109 |
3 |
| Israel Aerospace Industries Ltd. | 517 |
3 |
| SkyKar Inc. | 5 |
3 |
| Swift Engineering Inc. | 34 |
3 |
| Other owners | 112 |