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DIFF Main Group
F24S 10/00

Solar heat collectors using working fluids

Introduced: January 2018

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2018.

Child Classifications

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  • F24S 10/20 having circuits for two or more working fluids (with means for exchanging heat between two or more fluids F24S10/30) since 2018 IPC+CPC Available in IPC and CPC
  • F24S 10/25 having two or more passages for the same working fluid layered in direction of solar-rays, e.g. having upper circulation channels connected with lower circulation channels since 2018 IPC+CPC Available in IPC and CPC
  • F24S 10/30 with means for exchanging heat between two or more working fluids since 2018 IPC+CPC Available in IPC and CPC
  • F24S 10/60 the working fluids trickling freely over absorbing elements since 2018 IPC+CPC Available in IPC and CPC
  • F24S 10/80 comprising porous material or permeable masses directly contacting the working fluids (for conveying liquefied working fluid from evaporator sections to condenser sections with capillary force F24S10/95) since 2018 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F24,2013–2023, worldwide · Source: EPO PATSTAT

  1. MIDEA 21,834
  2. GREE ELECTRIC APPLIANCES 21,535
  3. GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 20,870
  4. QINGDAO HAIER AIR CONDITIONER COMPANY 15,443
  5. HAIER SMART HOME 15,442
  6. QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 10,008
  7. AUX AIR CONDITIONING COMPANY 7,723
  8. NINGBO AUX ELECTRIC COMPANY 7,499
  9. NINGBO FOTILE KITCHENWARE COMPANY 6,712
  10. LG ELECTRONICS KR 6,441

Top Applicants (CPC)

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