- All sections
- B - Performing operationstransporting
- B64C - Aeroplaneshelicopters
- B64C 27/00 - RotorcraftRotors peculiar thereto
Patent holdings for IPC class B64C 27/00
Total number of patents in this class: 1130
10-year publication summary
|
151
|
139
|
134
|
113
|
85
|
71
|
62
|
50
|
36
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Textron Innovations Inc. | 2444 |
141 |
| Sikorsky Aircraft Corporation | 1067 |
101 |
| Bell Helicopter Textron Inc. | 961 |
94 |
| Airbus Helicopters | 951 |
53 |
| Lord Corporation | 454 |
46 |
| The Boeing Company | 20160 |
35 |
| SZ DJI Technology Co., Ltd | 6933 |
35 |
| Leonardo S.p.A. | 699 |
33 |
| Airbus Helicopters Deutschland GmbH | 329 |
28 |
| Kitty Hawk Corporation | 303 |
26 |
| Hood Technology Corporation | 53 |
16 |
| Skydio, Inc. | 519 |
14 |
| Amazon Technologies, Inc. | 28087 |
13 |
| Honeywell International Inc. | 12778 |
11 |
| Lockheed Martin Corporation | 3255 |
11 |
| Merlin Technology, Inc. | 168 |
8 |
| Tusas- Turk Havacilik ve Uzay Sanayii Anonim Sirketi | 337 |
8 |
| MagLev Aero Inc. | 20 |
8 |
| Pratt & Whitney Canada Corp. | 5479 |
7 |
| Moog Inc. | 429 |
7 |
| Other owners | 435 |