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CPC Subgroup
B64C 11/46

Arrangements of, or constructional features peculiar to, multiple propellers

Full Title

Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft > Arrangements of, or constructional features peculiar to, multiple propellers

2 direct subcodes

Child Classifications

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  • B64C 11/48 Units of two or more coaxial propellers
  • B64C 11/50 Phase synchronisation between multiple propellers

Top Applicants

Top 10 applicants by patent filingsfor class B64, 2013–2023, worldwide · Source: EPO PATSTAT

  1. BOEING COMPANY US 9,861
  2. AIRBUS OPERATIONS DE 3,766
  3. AIRBUS OPERATIONS FR 3,112
  4. SZ DJI TECHNOLOGY COMPANY CN 2,840
  5. HAMILTON SUNDSTRAND US 2,753
  6. GOODRICH CORPORATION US 2,427
  7. AIRBUS OPERATIONS GB 2,356
  8. BOEING COMPANY 2,057
  9. SAFRAN AIRCRAFT ENGINES FR 1,815
  10. AIRBUS OPERATIONS 1,723