Owner 3M Innovative Properties Company

Inventors Springett, James E.; Angadjivand, Seyed A.

Agent Davies Collison Cave

Pub. Number AU-B-2003281777

PCT Number PCT/US2003/0188

PCT Pub. Number WO2004/011123

Priority 10/205,565 25.07.02 US

Filing date 16 June 2003

Wipo publication date 16 February 2004

Acceptance publication date 2 October 2008

A62B 18/02 (2006.01) Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes

A61M 16/06 (2006.01) Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration - Respiratory or anaesthetic masks

A62B 7/10 (2006.01) Respirators - with filter elements

B01D 39/00 (2006.01) Filtering material for liquid or gaseous fluids

B01D 39/02 (2006.01) Filtering material for liquid or gaseous fluids - Loose filtering material, e.g. loose fibres

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

B01D 46/00 (2006.01) Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

B03C 3/00 (2006.01) Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect

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

D04H 1/42 (2006.01) Kinds or types of non-woven fabrics - characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece

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