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CPC Subgroup
F25B 41/20

Disposition of valves, e.g. of on-off valves or flow control valves (expansion valves F25B41/31)

Full Title

Fluid-circulation arrangements > Disposition of valves, e.g. of on-off valves or flow control valves (expansion valves F25B41/31)

Filing statistics

CPC F25B 41/20 belongs to the parent subclass F25B, which recorded 121,123 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,227 in 2013 to 10,966 in 2023 (+52%), peaking at 13,018 applications in 2018. The most active applicants in class F25 are LG ELECTRONICS (9,415 applications), HAIER SMART HOME (8,015 applications) and MITSUBISHI ELECTRIC CORPORATION (5,758 applications).

Source: EPO PATSTAT, worldwide filings

4 direct subcodes

Child Classifications

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  • F25B 41/22 between evaporator and compressor
  • F25B 41/24 Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
  • F25B 41/26 of fluid flow reversing valves
  • F25B 41/28 specially adapted for sorption cycles

Top Applicants

Top 10 applicants by patent filingsfor class F25, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG ELECTRONICS KR 9,415
  2. HAIER SMART HOME 8,015
  3. MITSUBISHI ELECTRIC CORPORATION JP 5,758
  4. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,827
  5. MIDEA 3,769
  6. GREE ELECTRIC APPLIANCES 3,417
  7. HAIER SMART HOME CN 3,403
  8. SAMSUNG ELECTRONICS COMPANY KR 3,329
  9. DAIKIN INDUSTRIES JP 2,908
  10. HEFEI MIDEA REFRIGERATOR COMPANY 2,186