CPC Main Group
B64D 37/00 Arrangements in connection with fuel supply for power plant (refuelling during flight B64D39/00)
5 direct subcodes
Child Classifications
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- B64D 37/02 Tanks (tanks constructed integrally with aircraft wings B64C3/34)
- B64D 37/30 Fuel systems for specific fuels
- B64D 37/32 Safety measures not otherwise provided for, e.g. preventing explosive conditions
- B64D 37/34 Conditioning fuel, e.g. heating (during filling B64D37/18)
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