- Sections
- B - Techniques industrielles; transports
- B64C - Aéroplanes; hélicoptères
- B64C 11/48 - Ensembles de plusieurs hélices coaxiales
Détention brevets de la classe B64C 11/48
Brevets de cette classe: 235
Historique des publications depuis 10 ans
|
14
|
13
|
33
|
20
|
20
|
30
|
18
|
28
|
24
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| 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 |
| Autres propriétaires | 72 |