- All sections
- B - Performing operations; transporting
- B64C - Aeroplanes; helicopters
- B64C 11/48 - Units of two or more coaxial propellers
Patent holdings for IPC class B64C 11/48
Total number of patents in this class: 235
10-year publication summary
14
|
13
|
33
|
20
|
20
|
30
|
18
|
28
|
24
|
7
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Safran Aircraft Engines | 5739 |
51 |
General Electric Company | 18133 |
14 |
The Boeing Company | 19843 |
10 |
Amazon Technologies, Inc. | 24422 |
10 |
Rolls-Royce PLC | 2944 |
10 |
Textron Innovations Inc. | 2138 |
9 |
Snecma | 1065 |
9 |
Hood Technology Corporation | 53 |
6 |
Joby Aero, Inc. | 200 |
6 |
Rolls-Royce Corporation | 1686 |
5 |
CR Flight LLC | 25 |
5 |
Airbus Operations S.A.S. | 2407 |
4 |
Bell Helicopter Textron Inc. | 1122 |
4 |
Aergility Corporation | 7 |
4 |
SAFRAN S.A. | 518 |
3 |
SNECMA S.A. | 1160 |
3 |
Northrop Grumman Systems Corporation | 2940 |
3 |
United States of America AS represented by The Administrator of NASA | 364 |
3 |
Hamilton Sundstrand Corporation | 4525 |
2 |
Airbus Helicopters Deutschland GmbH | 324 |
2 |
Other owners | 72 |