Processes and Systems for the Bleaching of Lignocellulosic Pulps Following Cooking with Soda and Anthraquinone

Details for Australian Patent Application No. 2008202566 (hide)

Owner Andritz Inc.

Inventors O'Leary, Pam; Shin, Nam Hee; Stromberg, C. Bertil

Agent Cullens

Pub. Number AU-B-2008202566

Priority 12/133649 05.06.08 US; 60/944,589 18.06.07 US

Filing date 11 June 2008

Wipo publication date 8 January 2009

Acceptance publication date 3 November 2011

International Classifications

D21C 9/00 (2006.01) After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters

D21C 3/20 (2006.01) Pulping cellulose-containing materials

Event Publications

26 June 2008 Complete Application Filed

  Priority application(s): 12/133649 05.06.08 US; 60/944,589 18.06.07 US

8 January 2009 Application Open to Public Inspection

  Published as AU-B-2008202566

3 November 2011 Application Accepted

  Published as AU-B-2008202566

1 March 2012 Standard Patent Sealed

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