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CPC Subgroup Additional Only
F25J 2270/90

External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration

Full Title

Refrigeration techniques used > External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration

5 direct subcodes

Child Classifications

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  • F25J 2270/902 Details about the refrigeration cycle used, e.g. composition of refrigerant, arrangement of compressors or cascade, make up sources, use of reflux exchangers etc.
  • F25J 2270/904 by liquid or gaseous cryogen in an open loop
  • F25J 2270/906 by heat driven absorption chillers
  • F25J 2270/912 Liquefaction cycle of a low-boiling (feed) gas in a cryocooler, i.e. in a closed-loop refrigerator

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