Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility

Details for Australian Patent Application No. 2002246768 (hide)

International Classifications

Event Publications

13 February 2003 Application Open to Public Inspection

Published as AU-B-2002246768

23 February 2006 Application Accepted

Published as AU-B-2002246768

22 June 2006 Standard Patent Sealed

15 July 2010 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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