Nanoporous ultrafine alpha-alumina powders and freeze drying process of preparing the same

Details for Australian Patent Application No. 2004228649 (hide)

Owner Saint-Gobain Ceramics & Plastics, Inc.

Inventors Wang, Yuhu

Agent EF WELLINGTON & CO

Pub. Number AU-B-2004228649

PCT Pub. Number WO2004/089828

Priority 10/406,060 02.04.03 US

Filing date 31 March 2004

Wipo publication date 21 October 2004

Acceptance publication date 16 November 2006

International Classifications

C01F 7/02 (2006.01) Compounds of aluminium

C09K 3/14 (2006.01) Materials not provided for elsewhere - Anti-slip materials

Event Publications

6 October 2005 PCT application entered the National Phase

  PCT publication WO2004/089828 Priority application(s): WO2004/089828

16 November 2006 Application Accepted

  Published as AU-B-2004228649

15 March 2007 Standard Patent Sealed

25 October 2012 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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