- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 11/00 - Propellers, e.g. of ducted typeFeatures common to propellers and rotors for rotorcraft
Patent holdings for IPC class B64C 11/00
Total number of patents in this class: 750
10-year publication summary
|
53
|
68
|
70
|
69
|
80
|
82
|
95
|
73
|
54
|
50
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2370 |
67 |
| Safran Aircraft Engines | 6420 |
43 |
| General Electric Company | 13827 |
24 |
| Amazon Technologies, Inc. | 27270 |
21 |
| AeroVironment, Inc. | 543 |
17 |
| SZ DJI Technology Co., Ltd | 6870 |
17 |
| The Boeing Company | 20052 |
16 |
| Pratt & Whitney Canada Corp. | 4970 |
16 |
| Northrop Grumman Systems Corporation | 2930 |
14 |
| Airbus Helicopters Deutschland GmbH | 322 |
13 |
| Lilium eAircraft GmbH | 53 |
12 |
| Rolls-Royce PLC | 3165 |
11 |
| Dr. Ing. h.c. F. Porsche Aktiengesellschaft | 2792 |
11 |
| Lord Corporation | 464 |
10 |
| Airbus Helicopters | 945 |
9 |
| Bell Helicopter Textron Inc. | 1018 |
9 |
| GE Infrastructure Technology, LLC | 6196 |
9 |
| Hamilton Sundstrand Corporation | 4961 |
8 |
| Wisk Aero LLC | 244 |
8 |
| Whisper Aero Inc. | 57 |
8 |
| Other owners | 407 |