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DIFF Subgroup
F01D 5/02

Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 )

Introduced: September 1968

Title

Titles differ between systems:

IPC: Blade-carrying members, e.g. rotors

CPC: Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 )

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 > Blade-carrying members, e.g. rotors

CPC:

Blades; Blade-carrying members (nozzle boxes F01D9/02); Heating, heat-insulating, cooling or antivibration means on the blades or the members > Blade-carrying members, e.g. rotors (rotors of non-bladed type F01D1/34; stators F01D9/00 )

CPC subdivides this area 2x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • F01D 5/021 CPC only CPC only
  • F01D 5/022 CPC only CPC only
  • F01D 5/023 CPC only CPC only
  • F01D 5/025 CPC only CPC only
  • F01D 5/026 CPC only CPC only
  • F01D 5/027 CPC only CPC only
  • F01D 5/028 CPC only CPC only
  • F01D 5/03 Annular blade-carrying members having blades on the inner periphery of the annulus and extending inwardly radially, i.e. inverted rotors since 1995 IPC+CPC Available in IPC and CPC
  • F01D 5/10 Anti- vibration means IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

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

Top Applicants (CPC)

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

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