- Sections
- B - Techniques industriellestransports
- B64C - Aéroplaneshélicoptères
- B64C 27/51 - Amortissement des mouvements des pales
Détention brevets de la classe B64C 27/51
Brevets de cette classe: 158
Historique des publications depuis 10 ans
|
25
|
17
|
13
|
9
|
6
|
3
|
2
|
4
|
2
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Bell Helicopter Textron Inc. | 958 |
35 |
| Sikorsky Aircraft Corporation | 1061 |
26 |
| Textron Innovations Inc. | 2537 |
22 |
| Lord Corporation | 454 |
15 |
| Airbus Helicopters | 952 |
13 |
| The Boeing Company | 20197 |
5 |
| Airbus Helicopters Deutschland GmbH | 334 |
3 |
| Hutchinson | 493 |
3 |
| Kopter Group AG | 37 |
3 |
| Wisk Aero LLC | 283 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 9188 |
2 |
| Innostar | 9 |
2 |
| Ideaforge Technology Pvt. Ltd. | 34 |
2 |
| Bell Textron Inc. | 67 |
2 |
| Caterpillar Inc. | 10302 |
1 |
| Hamilton Sundstrand Corporation | 5013 |
1 |
| The United States of America as represented by the Secretary of the Army | 1260 |
1 |
| Alion Science and Technology Corporation | 11 |
1 |
| Aurora Flight Sciences Corporation | 246 |
1 |
| AVX Aircraft Company | 14 |
1 |
| Autres propriétaires | 16 |