Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying

Introduced: January 2021

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: HEATING; RANGES; VENTILATING
Subclass:: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING

Additional Content

Self-contained air purifier self-contained air purifiers Apparatus with all its air purifying elements, e.g. filters or fans, arranged in a common casing.

Related Keywords

air-conditioning including PURIFICATIONVENTILATION in general

10 direct subcodes

Child Classifications

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F24F 8/1 by separation, e.g. by filtering
F24F 8/2 by sterilisation
F24F 8/3 by ionisation
F24F 8/4 by ozonisation
F24F 8/5 by odorisation
F24F 8/6 by adding oxygen
F24F 8/7 by removing radon
F24F 8/8 Self-contained air purifiers
F24F 8/9 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

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