Gradient density padding material and method of making same

Details for Australian Patent Application No. 2003231005 (hide)

Owner Lydall, Inc.

Inventors Borchardt, Steven; Gomez, Durward

Agent Hodgkinson McInnes

Pub. Number AU-B-2003231005

PCT Number PCT/US03/12173

PCT Pub. Number WO2003/089731

Priority 60/374,140 22.04.02 US

Filing date 22 April 2003

Wipo publication date 3 November 2003

Acceptance publication date 21 September 2006

International Classifications

E04B 1/82 (2006.01) Constructions in general - specifically with respect to sound only

B32B 5/02 (2006.01) Layered products characterised by the non-homogeneity or physical structure of a layer - characterised by structural features of a layer comprising fibres or filaments

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 1/70 (2006.01) Kinds or types of non-woven fabrics - characterised by the method of forming fleeces or layers, e.g. reorientation of fibres

D04H 1/74 (2006.01) Kinds or types of non-woven fabrics

G10K 11/162 (2006.01) Methods or devices for transmitting, conducting or directing sound in general

G10K 11/168 (2006.01) Methods or devices for transmitting, conducting or directing sound in general

Event Publications

14 August 2003 Complete Application Filed

  Priority application(s): 60/374,140 22.04.02 US

11 December 2003 Application Open to Public Inspection

  Published as AU-B-2003231005

17 March 2005 Amendment Made

  The nature of the amendment is as shown in the statement(s) filed 10 Feb 2005

21 September 2006 Application Accepted

  Published as AU-B-2003231005

18 January 2007 Standard Patent Sealed

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