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CPC Subgroup
F04B 27/047

with an actuating element at the outer ends of the cylinders

Full Title

Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders (multi-stage pumps specially adapted for elastic fluids F04B25/00) > having cylinders in star- or fan-arrangement > with an actuating element at the outer ends of the cylinders

Filing statistics

CPC F04B 27/047 belongs to the parent subclass F04B, which recorded 98,292 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,699 in 2013 to 8,239 in 2023 (+23%), peaking at 10,621 applications in 2016. 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

2 direct subcodes

Child Classifications

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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