Electrostatic fibrous filter web and method of making same

Details for Australian Patent Application No. 2002213472 (hide)

Owner 3M Innovative Properties Company

Inventors Both, Hendrik

Agent Davies Collison Cave

Pub. Number AU-B-2002213472

PCT Pub. Number WO02/30544

Priority 00203536 13.10.00 EP

Filing date 11 October 2001

Wipo publication date 22 April 2002

Acceptance publication date 1 February 2007

International Classifications

B01D 39/14 (2006.01) Filtering material for liquid or gaseous fluids - Other self-supporting filtering material

B01D 39/16 (2006.01) Filtering material for liquid or gaseous fluids - of organic material, e.g. synthetic fibres

B03C 3/28 (2006.01) Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect

D04H 1/54 (2006.01) Kinds or types of non-woven fabrics - by welding together the fibres, e.g. by partially melting or dissolving

D04H 3/16 (2006.01) Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length - with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

D04H 13/02 (2006.01) Other non-woven fabrics

Event Publications

1 February 2007 Application Accepted

  Published as AU-B-2002213472

31 May 2007 Standard Patent Sealed

7 May 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This patent ceased under section 143(a), or Expired. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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