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CPC Subgroup
F04C 3/02

the axes being arranged at an angle of 90 degrees

Full Title

Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type (with the working-chamber walls at least partly resiliently deformable F04C5/00; rotary-piston pumps with non-parallel axes of movement of co-operating members specially adapted for elastic fluids F04C18/48) > the axes being arranged at an angle of 90 degrees

Filing statistics

CPC F04C 3/02 belongs to the parent subclass F04C, which recorded 51,252 patent applications worldwide between 2013 and 2023. Annual filings declined from 6,720 in 2013 to 3,771 in 2023 (-44%). The most active applicants in class F04 are LG ELECTRONICS (3,855 applications), ROBERT BOSCH (3,549 applications) and GREE ELECTRIC APPLIANCES (2,273 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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  • F04C 3/04 of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Top Applicants

Top 10 applicants by patent filingsfor class F04, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG ELECTRONICS KR 3,855
  2. ROBERT BOSCH DE 3,549
  3. GREE ELECTRIC APPLIANCES 2,273
  4. GE (GENERAL ELECTRIC COMPANY) US 2,126
  5. MITSUBISHI ELECTRIC CORPORATION JP 1,881
  6. UNITED TECHNOLOGIES CORPORATION (UTC) US 1,866
  7. SAFRAN AIRCRAFT ENGINES FR 1,499
  8. MITSUBISHI HEAVY INDUSTRIES JP 1,258
  9. TOYOTA INDUSTRIES CORPORATION JP 1,247
  10. ATLAS COPCO AIRPOWER BE 1,168