Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight (refuelling during flight B64D39/00; launching apparatus for projecting projectiles or missiles F41F1/00, F41F7/00; rocket or torpedo launchers F41F3/00; weapon sights or aiming F41G)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight

CPC: Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight (refuelling during flight B64D39/00; launching apparatus for projecting projectiles or missiles F41F1/00, F41F7/00; rocket or torpedo launchers F41F3/00; weapon sights or aiming F41G)

Full Title

Full titles differ between systems:

IPC:

Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight

CPC:

Dropping, ejecting, releasing or receiving articles, liquids, or the like, in flight (refuelling during flight B64D39/00; launching apparatus for projecting projectiles or missiles F41F1/00, F41F7/00; rocket or torpedo launchers F41F3/00; weapon sights or aiming F41G)

Additional Content IPC

Refuelling during flight Apparatus for launching projectiles or missiles from barrels, e.g. cannons Rocket or torpedo launchers Launching apparatus for projecting projectiles or missiles otherwise than from barrels Weapon sights; Aiming

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

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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B64D 1/02 Dropping, ejecting, or releasing articles (jettisonable fuel reservoirs B64D37/12) IPC+CPC Available in IPC and CPC
B64D 1/16 Dropping or releasing powdered, liquid, or gaseous matter, e.g. for fire-fighting (jettisoning fuel B64D37/26) IPC+CPC Available in IPC and CPC
B64D 1/22 Taking-up articles from earth's surface 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