Fixing blades to rotors; Blade roots

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members > Fixing blades to rotors; Blade roots

CPC:

Blades; Blade-carrying members (nozzle boxes F01D9/02); Heating, heat-insulating, cooling or antivibration means on the blades or the members > Fixing blades to rotors; Blade roots

CPC subdivides this area 9x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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F01D 5/3007 +1 CPC CPC only CPC only
F01D 5/3023 +2 CPC CPC only CPC only
F01D 5/3053 CPC only CPC only
F01D 5/3061 CPC only CPC only
F01D 5/3069 CPC only CPC only
F01D 5/3076 CPC only CPC only
F01D 5/3084 CPC only CPC only
F01D 5/3092 CPC only CPC only
F01D 5/32 Locking, e.g. by final locking blades or keys +2 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F01,2013–2023, worldwide · Source: EPO PATSTAT

GE (GENERAL ELECTRIC COMPANY) US 8,496
UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
SAFRAN AIRCRAFT ENGINES FR 5,503
TOYOTA MOTOR CORPORATION 4,556
SIEMENS DE 3,992
HYUNDAI MOTOR COMPANY KR 3,929
RAYTHEON TECHNOLOGIES CORPORATION US 3,534
FORD GLOBAL TECHNOLOGIES US 3,407
TOYOTA MOTOR CORPORATION JP 3,042
WEICHAI POWER COMPANY 2,888

Top Applicants (CPC)

Class F01,2013–2023, worldwide · Source: EPO PATSTAT

GE (GENERAL ELECTRIC COMPANY) US 9,989
UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
SAFRAN AIRCRAFT ENGINES FR 6,248
HYUNDAI MOTOR COMPANY KR 4,530
SIEMENS DE 4,461
FORD GLOBAL TECHNOLOGIES US 4,029
RAYTHEON TECHNOLOGIES CORPORATION US 3,947
TOYOTA MOTOR CORPORATION JP 3,734
GE (GENERAL ELECTRIC COMPANY) 3,415
SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063