EP 1487562 A1 20041222 - TWO STAGE AIR FILTER
Title (en)
TWO STAGE AIR FILTER
Title (de)
ZWEISTUFIGER LUFTFILTER
Title (fr)
FILTRE A AIR A DEUX ETAGES
Publication
Application
Priority
US 0206453 W 20020301
Abstract (en)
[origin: WO03084643A1] A two stage air purification system is provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork. In particular, a primary air filter (18) is mounted within the hood (12) of, for example, a cooking area and operable to receive grease laden air (16) and remove a portion of the impurities. The air is then sent to a secondary filter (22), also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
IPC 1-7
IPC 8 full level
B01D 35/30 (2006.01); B01D 39/06 (2006.01); B01D 45/12 (2006.01); B01D 50/00 (2006.01); F24C 15/20 (2006.01)
CPC (source: EP)
B01D 39/06 (2013.01); B01D 45/12 (2013.01); B01D 50/20 (2022.01); F24C 15/2035 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 03084643 A1 20031016; AU 2002248526 A1 20031020; CA 2478383 A1 20031016; CA 2478383 C 20090526; CN 100509114 C 20090708; CN 1625430 A 20050608; EP 1487562 A1 20041222; EP 1487562 A4 20060607; MX PA04008478 A 20041206
DOCDB simple family (application)
US 0206453 W 20020301; AU 2002248526 A 20020301; CA 2478383 A 20020301; CN 02828725 A 20020301; EP 02717532 A 20020301; MX PA04008478 A 20020301