CPC Subgroup
B64C 27/32 Rotors
Full Title
Rotorcraft; Rotors peculiar thereto > Rotors
7 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B64C 27/33 having flexing arms
- B64C 27/35 having elastomeric joints
- B64C 27/37 having articulated joints
- B64C 27/46 Blades
Top Applicants
Top 10 applicants by patent filingsfor class B64, 2013–2023, worldwide · Source: EPO PATSTAT
- BOEING COMPANY US 9,861
- AIRBUS OPERATIONS DE 3,766
- AIRBUS OPERATIONS FR 3,112
- SZ DJI TECHNOLOGY COMPANY CN 2,840
- HAMILTON SUNDSTRAND US 2,753
- GOODRICH CORPORATION US 2,427
- AIRBUS OPERATIONS GB 2,356
- BOEING COMPANY 2,057
- SAFRAN AIRCRAFT ENGINES FR 1,815
- AIRBUS OPERATIONS 1,723