Filter structure with two or more layers of fine fiber having extended useful service life

Details for Australian Patent Application No. 2001288333 (hide)

Owner Donaldson Company, Inc.

Inventors Crofoot, Douglas G.; Benson, James D.; Weik, Thomas M.; Gogins, Mark A.

Agent Freehills

Pub. Number AU-B-2001288333

PCT Pub. Number WO02/20130

Priority 09/871,156 31.05.01 US; 60/230,138 05.09.00 US

Filing date 21 August 2001

Wipo publication date 22 March 2002

Acceptance publication date 25 May 2006

International Classifications

B01D 46/12 (2006.01) Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

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

B01D 46/02 (2006.01) Filters or filtering processes specially modified for separating dispersed particles from gases or vapours - Particle separators, e.g. dust precipitators, having hollow filters made of flexible material

B01D 46/24 (2006.01) Filters or filtering processes specially modified for separating dispersed particles from gases or vapours - Particle separators, e.g. dust precipitators, using rigid hollow filter bodies

B01D 46/52 (2006.01) Filters or filtering processes specially modified for separating dispersed particles from gases or vapours - Particle separators, e.g. dust precipitators, using filters embodying folded material

D01F 6/90 (2006.01) Monocomponent artificial filaments or the like of synthetic polymers

D01F 6/92 (2006.01) Monocomponent artificial filaments or the like of synthetic polymers - of polyesters

Event Publications

25 May 2006 Application Accepted

  Published as AU-B-2001288333

21 September 2006 Standard Patent Sealed

17 March 2011 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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