- Sections
- B - Techniques industriellestransports
- B64C - Aéroplaneshélicoptères
- B64C 11/48 - Ensembles de plusieurs hélices coaxiales
Détention brevets de la classe B64C 11/48
Brevets de cette classe: 303
Historique des publications depuis 10 ans
|
33
|
20
|
20
|
30
|
18
|
31
|
27
|
27
|
22
|
31
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Safran Aircraft Engines | 6811 |
57 |
| General Electric Company | 14021 |
37 |
| Amazon Technologies, Inc. | 28358 |
10 |
| Rolls-Royce PLC | 3233 |
10 |
| Textron Innovations Inc. | 2549 |
10 |
| Snecma | 1057 |
9 |
| The Boeing Company | 20232 |
8 |
| Joby Aero, Inc. | 388 |
7 |
| Hood Technology Corporation | 52 |
6 |
| Aergility Corporation | 7 |
6 |
| Rolls-Royce Corporation | 1686 |
5 |
| Zipline International Inc. | 76 |
5 |
| CR Flight LLC | 19 |
5 |
| Airbus Operations S.A.S. | 2586 |
4 |
| SNECMA S.A. | 1145 |
3 |
| Northrop Grumman Systems Corporation | 2912 |
3 |
| Bell Helicopter Textron Inc. | 955 |
3 |
| United States of America AS represented by The Administrator of NASA | 486 |
3 |
| Supernal LLC, AKA Supernal | 152 |
3 |
| MagLev Aero Inc. | 23 |
3 |
| Autres propriétaires | 106 |