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DIFF Subgroup
B64C 27/58

Transmitting means, e.g. interrelated with initiating means or means acting on blades (means acting on blades B64C27/72)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Transmitting means, e.g. interrelated with initiating means or means acting on blades

CPC: Transmitting means, e.g. interrelated with initiating means or means acting on blades (means acting on blades B64C27/72)

Full Title

Full titles differ between systems:

IPC:

Rotorcraft; Rotors peculiar thereto > Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement > Transmitting means, e.g. interrelated with initiating means or means acting on blades

CPC:

Rotorcraft; Rotors peculiar thereto > Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement > Transmitting means, e.g. interrelated with initiating means or means acting on blades (means acting on blades B64C27/72)

Additional Content IPC

Means acting on blades

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

Child Classifications

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  • B64C 27/64 using fluid pressure, e.g. having fluid power amplification IPC+CPC Available in IPC and CPC
  • B64C 27/68 using electrical energy, e.g. having electrical power amplification IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B64,2013–2023, worldwide · Source: EPO PATSTAT

  1. BOEING COMPANY US 8,583
  2. AIRBUS OPERATIONS DE 3,430
  3. AIRBUS OPERATIONS FR 2,757
  4. HAMILTON SUNDSTRAND US 2,332
  5. SZ DJI TECHNOLOGY COMPANY CN 2,109
  6. AIRBUS OPERATIONS GB 2,084
  7. GOODRICH CORPORATION US 2,053
  8. XI'AN AIRCRAFT DESIGN INSTITUTE OF AVIATION INDUSTRY CORPORATION OF CHINA 1,938
  9. BOEING COMPANY 1,816
  10. NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS 1,589

Top Applicants (CPC)

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