CPC Subgroup
B64B 1/30 Arrangement of propellers
Full Title
Lighter-than-air aircraft > Rigid airships; Semi-rigid airships (B64B1/58 takes precedence) > Arrangement of propulsion plant (B64B1/34 takes precedence) > Arrangement of propellers
2 direct subcodes
Child Classifications
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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