- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 11/00 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
Patent holdings for IPC class B64C 11/00
Total number of patents in this class: 677
10-year publication summary
|
38
|
62
|
70
|
72
|
78
|
81
|
85
|
99
|
70
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2138 |
65 |
| Safran Aircraft Engines | 5739 |
30 |
| Amazon Technologies, Inc. | 24422 |
21 |
| General Electric Company | 18133 |
19 |
| SZ DJI Technology Co., Ltd | 6791 |
18 |
| AeroVironment, Inc. | 499 |
17 |
| The Boeing Company | 19843 |
15 |
| Pratt & Whitney Canada Corp. | 4215 |
14 |
| Northrop Grumman Systems Corporation | 2940 |
14 |
| Lord Corporation | 484 |
13 |
| Rolls-Royce PLC | 2944 |
11 |
| Airbus Helicopters Deutschland GmbH | 324 |
11 |
| Airbus Helicopters | 984 |
10 |
| Dr. Ing. h.c. F. Porsche Aktiengesellschaft | 2487 |
10 |
| Hamilton Sundstrand Corporation | 4525 |
9 |
| Bell Helicopter Textron Inc. | 1122 |
9 |
| GE Infrastructure Technology, LLC | 5873 |
9 |
| Lilium eAircraft GmbH | 71 |
9 |
| Vestas Wind Systems A/S | 3459 |
7 |
| Rolls-Royce Corporation | 1686 |
6 |
| Other owners | 360 |