- Sections
- B - Techniques industriellestransports
- B64C - Aéroplaneshélicoptères
- B64C 27/46 - Pales
Détention brevets de la classe B64C 27/46
Brevets de cette classe: 257
Historique des publications depuis 10 ans
|
26
|
29
|
21
|
25
|
19
|
18
|
15
|
9
|
12
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Sikorsky Aircraft Corporation | 1106 |
48 |
| Textron Innovations Inc. | 2295 |
19 |
| Bell Helicopter Textron Inc. | 1052 |
15 |
| Pratt & Whitney Canada Corp. | 4629 |
13 |
| The Boeing Company | 20025 |
11 |
| Amazon Technologies, Inc. | 26519 |
11 |
| Airbus Helicopters | 965 |
10 |
| GE Infrastructure Technology, LLC | 6196 |
9 |
| Lockheed Martin Corporation | 3278 |
8 |
| Leonardo S.p.A. | 657 |
6 |
| Wing Aviation LLC | 459 |
5 |
| SZ DJI Technology Co., Ltd | 6840 |
4 |
| Rtx Corporation | 9313 |
4 |
| Karem Aircraft, Inc. | 38 |
3 |
| Safran Aircraft Engines | 6250 |
3 |
| Vestas Wind Systems A/S | 3648 |
3 |
| Leonardo UK Ltd | 120 |
3 |
| General Electric Company | 13830 |
2 |
| United Technologies Corporation | 2247 |
2 |
| Northrop Grumman Systems Corporation | 2949 |
2 |
| Autres propriétaires | 76 |