CPC Main Group
F24F 8/00 Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
10 direct subcodes
Child Classifications
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- F24F 8/10 by separation, e.g. by filtering
- F24F 8/20 by sterilisation
- F24F 8/30 by ionisation
- F24F 8/40 by ozonisation (for sterilisation F24F8/26)
- F24F 8/50 by odorisation
- F24F 8/60 by adding oxygen
- F24F 8/70 by removing radon
- F24F 8/80 Self-contained air purifiers
- F24F 8/90 Cleaning of purification apparatus
- F24F 8/95 specially adapted for specific purposes
Top Applicants
Top 10 applicants by patent filingsfor class F24, 2013–2023, worldwide · Source: EPO PATSTAT
- GREE ELECTRIC APPLIANCES 11,167
- QINGDAO HAIER AIR CONDITIONER COMPANY 9,225
- HAIER SMART HOME 8,998
- MIDEA 8,874
- GUANGDONG MIDEA REFRIGERATION EQUIPMENT COMPANY 8,724
- LG ELECTRONICS KR 7,258
- MITSUBISHI ELECTRIC CORPORATION JP 7,009
- QINGDAO HAIER AIR CONDITIONER ELECTRIC COMPANY 6,104
- BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,544
- NINGBO AUX ELECTRIC COMPANY 3,302