Global Patent Index - EP 1098711 A1

EP 1098711 A1 2001-05-16 - AIR PURIFICATION FILTER AND A METHOD FOR MANUFACTURING SUCH FILTERS

Title (en)

AIR PURIFICATION FILTER AND A METHOD FOR MANUFACTURING SUCH FILTERS

Title (de)

LUFTREININGUNGSFILTER UND HERSTELLUNGS-VERFAHREN

Title (fr)

FILTRE DE PURIFICATION DE L'AIR ET PROCEDE DE FABRICATION DE TELS FILTRES

Publication

EP 1098711 A1 (EN)

Application

EP 99941935 A

Priority

  • SE 9901294 W
  • SE 9802601 A

Abstract (en)

[origin: WO0007732A1] The invention relates to an air purification filter that in a common unit includes a prefiltering filter wall (1) and a set of elongated, flimsy elements (7) of electrostatically chargeable material, said elements (7), when passed by air, generating static electricity, by the aid of which, also microscopically small particles may be attracted and adhered to the elements. The set of elements (7) hereby forms a finefiltering means. The finefiltering elements (7) are located at the downstream side of the filter wall (1) and secured thereto, more precisely in such wave formations that are open towards the downstream side (6) of the filter wall.

IPC 1-7 (main, further and additional classification)

B03C 3/30; B03C 3/14

IPC 8 full level (invention and additional information)

B01D 46/52 (2006.01); B03C 3/019 (2006.01); B03C 3/155 (2006.01); B03C 3/30 (2006.01)

CPC (invention and additional information)

B03C 3/30 (2013.01); B03C 3/019 (2013.01)

Citation (search report)

See references of WO 0007732A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0007732 A1 20000217; AU 5540899 A 20000228; CN 1310644 A 20010829; EP 1098711 A1 20010516; JP 2002522204 A 20020723; SE 512357 C2 20000306; SE 9802601 D0 19980723; SE 9802601 L 20000124

INPADOC legal status


2002-05-22 [18W] WITHDRAWN

- Date of withdrawal: 20020327

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010119

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-16 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI