Global Patent Index - EP 1239937 A1

EP 1239937 A1 2002-09-18 - POROUS MEDIA FOR DISSIPATING ELECTRICAL CHARGE

Title (en)

POROUS MEDIA FOR DISSIPATING ELECTRICAL CHARGE

Title (de)

PORÖSES MEDIUM ZUM ABLEITEN VON ELEKTRISCHEN LADUNGEN

Title (fr)

MILIEUX POREUX DESTINE A DISSIPER LA CHARGE ELECTRIQUE

Publication

EP 1239937 A1 (EN)

Application

EP 00982181 A

Priority

  • US 0031948 W
  • US 16699099 P

Abstract (en)

[origin: WO0137970A1] Disclosed are porous media, including filter media, that dissipate electrical charges that are generated when a fluid such as a non-polar fluid moves through the porous media. The porous media include a non-conductive glass, polymeric, or ceramic fiber and a conductive polymer fiber, a non-conductive glass or ceramic fiber and a conductive material-coated fiber, a non-conductive glass fiber and a metal-impregnated conductive fiber, a non-conductive synthetic polymeric fiber and a metal-coated fiber, a non-conductive natural polymeric fiber and a conductive material-impregnated fiber, or a non-conductive glass, ceramic, or synthetic polymeric fiber and a metal fiber. A composite filter medium comprises a conductive or nonconductive fiber layer laid on and bonded to an electrically conductive substrate.

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

B01D 39/16; B01D 39/20

IPC 8 full level (invention and additional information)

B01D 39/14 (2006.01); B01D 39/16 (2006.01); B01D 39/18 (2006.01); B01D 39/20 (2006.01); D21F 11/14 (2006.01); D21H 13/40 (2006.01); D21H 13/48 (2006.01); D21H 27/08 (2006.01)

CPC (invention and additional information)

B01D 39/2065 (2013.01); B01D 39/1607 (2013.01); B01D 39/2017 (2013.01); B01D 39/2041 (2013.01); B01D 39/2082 (2013.01); B01D 2201/50 (2013.01); B01D 2239/0241 (2013.01); B01D 2239/0464 (2013.01); B01D 2239/0492 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/064 (2013.01); B01D 2239/0663 (2013.01); B01D 2239/083 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1233 (2013.01)

Citation (search report)

See references of WO 0137970A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0137970 A1 20010531; AU 1924501 A 20010604; CA 2391015 A1 20010531; CA 2391015 C 20090929; EP 1239937 A1 20020918; JP 2003517371 A 20030527; JP 4918204 B2 20120418

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE FR GB IT

2003-09-10 [18W] APPLICATION WITHDRAWN

- Effective date: 20030711

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020624

2002-09-18 [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 TR

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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