Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: AIRCRAFT; AVIATION; COSMONAUTICS
Subclass:: AEROPLANES; HELICOPTERS

Filing statistics

IPC B64C 11/00 belongs to the parent subclass B64C, which recorded 147,606 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,800 in 2013 to 9,217 in 2023 (+59%), peaking at 18,666 applications in 2020. The most active applicants in class B64 are BOEING COMPANY (8,583 applications), AIRBUS OPERATIONS (3,430 applications) and AIRBUS OPERATIONS (2,757 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Rotors specially adapted for rotorcraft

Related Keywords

AIRSCREWSaircraft PROPELLERSair SCREW(S)

4 direct subcodes

Child Classifications

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B64C 11/02 Hub construction
B64C 11/16 Blades
B64C 11/3 Blade pitch-changing mechanisms
B64C 11/46 Arrangements of, or constructional features peculiar to, multiple propellers

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