characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68)

Introduced: September 1968

Title

Titles differ between systems:

IPC: characterised by elements which contact the ground or similar surface

CPC: characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68)

Full Title

Full titles differ between systems:

IPC:

Alighting gear > characterised by elements which contact the ground or similar surface

CPC:

Alighting gear (air-cushion alighting gear B60V3/08) > characterised by elements which contact the ground or similar surface (arrester hooks B64C25/68)

Of 11 combined children, 9 exist in both systems.

2 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

B64C 2025/325 2nd only CPC only CPC only
B64C 25/34 wheeled type, e.g. multi-wheeled bogies +1 CPC IPC+CPC Available in IPC and CPC
B64C 25/38 endless-track type IPC+CPC Available in IPC and CPC
B64C 25/40 the elements being rotated before touch-down IPC+CPC Available in IPC and CPC
B64C 25/405 CPC only CPC only
B64C 25/42 Arrangement or adaptation of brakes +2 CPC IPC+CPC Available in IPC and CPC
B64C 25/50 Steerable undercarriages; Shimmy-damping +1 CPC IPC+CPC Available in IPC and CPC
B64C 25/52 Skis or runners IPC+CPC Available in IPC and CPC
B64C 25/54 Floats IPC+CPC Available in IPC and CPC
B64C 25/58 Arrangements or adaptations of shock-absorbers or springs (shimmy-dampers B64C25/50) IPC+CPC Available in IPC and CPC
B64C 25/66 Convertible alighting gear; Combinations of different kinds of ground or like engaging elements IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

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

Top Applicants (CPC)

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