- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/56 - Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement characterised by the control initiating means, e.g. manually actuated
Patent holdings for IPC class B64C 27/56
Total number of patents in this class: 117
10-year publication summary
|
17
|
9
|
16
|
16
|
9
|
6
|
8
|
5
|
6
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bell Helicopter Textron Inc. | 1060 |
24 |
| Airbus Helicopters | 972 |
12 |
| Safran Electronics & Defense | 1293 |
11 |
| Sikorsky Aircraft Corporation | 1097 |
10 |
| Merlin Technology, Inc. | 164 |
9 |
| Textron Innovations Inc. | 2346 |
9 |
| The Boeing Company | 20139 |
8 |
| Essex Industries, Inc. | 24 |
4 |
| Hill Group Technologies Limited | 15 |
4 |
| Korea Aerospace Research Institute | 316 |
2 |
| Societe de Commercialisation des Produits de La Recherche Appliquee Socpra Sciences et Genie S.E.C. | 55 |
2 |
| Urbineer Inc. | 6 |
2 |
| Supernal LLC, AKA Supernal | 106 |
2 |
| Airbus Operations S.A.S. | 2497 |
1 |
| Lockheed Martin Corporation | 3271 |
1 |
| California Institute of Technology | 3985 |
1 |
| Airbus Helicopters Deutschland GmbH | 331 |
1 |
| Aviointeriors S.p.A. | 11 |
1 |
| Embraer S.A. | 400 |
1 |
| Multiquip, Inc. | 74 |
1 |
| Other owners | 11 |