- 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: 270
Historique des publications depuis 10 ans
|
12
|
29
|
19
|
20
|
27
|
16
|
30
|
26
|
24
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Safran Aircraft Engines | 6384 |
56 |
| General Electric Company | 13861 |
19 |
| Amazon Technologies, Inc. | 27203 |
10 |
| Rolls-Royce PLC | 3141 |
10 |
| Textron Innovations Inc. | 2362 |
10 |
| Snecma | 1064 |
9 |
| The Boeing Company | 20166 |
8 |
| CR Flight LLC | 26 |
7 |
| Hood Technology Corporation | 54 |
6 |
| Joby Aero, Inc. | 324 |
6 |
| Aergility Corporation | 7 |
6 |
| Rolls-Royce Corporation | 1751 |
5 |
| Airbus Operations S.A.S. | 2505 |
4 |
| SAFRAN S.A. | 631 |
3 |
| SNECMA S.A. | 1148 |
3 |
| Northrop Grumman Systems Corporation | 2934 |
3 |
| Bell Helicopter Textron Inc. | 1021 |
3 |
| United States of America AS represented by The Administrator of NASA | 447 |
3 |
| Supernal LLC, AKA Supernal | 113 |
3 |
| Vertical Aerospace Group Ltd | 12 |
3 |
| Autres propriétaires | 93 |