Process for producing very low COD unbleached pulp

Details for Australian Patent Application No. 2002309875 (hide)

Owner Weyerhaeuser Company

Inventors Reimer, Julie A.; Wester, Brian; Lau, Peter K.; Dennis, Brian E.; Bickell, David W.; Vrbanac, Michael D.

Agent Phillips Ormonde Fitzpatrick

Pub. Number AU-B-2002309875

PCT Number PCT/US02/15522

PCT Pub. Number WO2003/097930

Filing date 15 May 2002

Wipo publication date 2 December 2003

Acceptance publication date 17 August 2006

International Classifications

D21C 3/02 (2006.01) Pulping cellulose-containing materials

C04B 16/02 (2006.01) Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone

D21C 9/02 (2006.01) After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters

Event Publications

19 December 2002 Complete Application Filed

29 January 2004 Application Open to Public Inspection

  Published as AU-B-2002309875

17 August 2006 Application Accepted

  Published as AU-B-2002309875

14 December 2006 Standard Patent Sealed

9 December 2010 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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