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

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: AIRCRAFT; AVIATION; COSMONAUTICS
Subclass:: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT

Additional Content

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

Related Keywords

dropping, releasing, or receiving articles from AIRCRAFT while in flight

3 direct subcodes

Child Classifications

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B64D 1/02 Dropping, ejecting, or releasing articles
B64D 1/16 Dropping or releasing powdered, liquid or gaseous matter, e.g. for fire-fighting
B64D 1/22 Taking-up articles from earth's surface

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