IPC Subgroup
B64C 25/32 characterised by elements which contact the ground or similar surface
Introduced: September 1968
Last revised: January 2006
Full Title
Alighting gear > characterised by elements which contact the ground or similar surface
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- AIRCRAFT; AVIATION; COSMONAUTICS
- Subclass:
- AEROPLANES; HELICOPTERS
9 direct subcodes
Child Classifications
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- B64C 25/34 wheeled type, e.g. multi-wheeled bogies
- B64C 25/38 endless-track type
- B64C 25/4 the elements being rotated before touch-down
- B64C 25/42 Arrangement or adaptation of brakes
- B64C 25/5 Steerable undercarriages; Shimmy-damping
- B64C 25/52 Skis or runners
- B64C 25/54 Floats
- B64C 25/58 Arrangements or adaptations of shock-absorbers or springs
- B64C 25/66 Convertible alighting gear; Combinations of different kinds of ground or like engaging elements
Top Applicants
Top 10 applicants by patent filingsfor 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