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DIFF Subgroup
B64C 37/02

Flying units formed by separate aircraft (towing B64D3/00; aircraft transported by aircraft B64D5/00; air-refuelling B64D39/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Flying units formed by separate aircraft

CPC: Flying units formed by separate aircraft (towing B64D3/00; aircraft transported by aircraft B64D5/00; air-refuelling B64D39/00)

Full Title

Full titles differ between systems:

IPC:

Convertible aircraft > Flying units formed by separate aircraft

CPC:

Convertible aircraft > Flying units formed by separate aircraft (towing B64D3/00; aircraft transported by aircraft B64D5/00; air-refuelling B64D39/00)

Additional Content IPC

Towing Aircraft transported by aircraft Air-refuelling

No child classifications to compare. This is a leaf node in both 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