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CPC Subclass Not Allocatable
F24T

GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS

Description

F24T covers devices and systems that extract and utilize thermal energy from the Earth's subsurface for heating and cooling applications. This includes ground source heat exchangers, borehole heat collectors, closed-loop and open-loop geothermal circulation systems, and associated piping and heat transfer arrangements. The classification encompasses both the collection apparatus and integrated geothermal heating/cooling systems for residential, commercial, and industrial buildings. Related heating technologies using conventional or renewable sources are classified elsewhere in F24.

Filing statistics

CPC subclass F24T recorded 5,159 patent applications worldwide between 2013 and 2023. Annual filings grew from 360 in 2013 to 584 in 2023 (+62%), peaking at 640 applications in 2020. The most active applicants in class F24 are GREE ELECTRIC APPLIANCES (11,167 applications), QINGDAO HAIER AIR CONDITIONER COMPANY (9,225 applications) and HAIER SMART HOME (8,998 applications).

Source: EPO PATSTAT, worldwide filings

3 direct subcodes

Child Classifications

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  • F24T 2201/00 Prediction; Simulation
  • F24T 50/00 Geothermal systems (for producing mechanical power from geothermal energy F03G4/00)

Top Applicants

Top 10 applicants by patent filingsfor class F24, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GREE ELECTRIC APPLIANCES 11,167
  2. QINGDAO HAIER AIR CONDITIONER COMPANY 9,225
  3. HAIER SMART HOME 8,998
  4. MIDEA 8,874
  5. GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 8,724
  6. LG ELECTRONICS KR 7,258
  7. MITSUBISHI ELECTRIC CORPORATION JP 7,009
  8. QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 6,104
  9. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,544
  10. NINGBO AUX ELECTRIC COMPANY 3,302