Surfactant materials and coatings for weighting agents for use in oil based drilling fluids

Details for Australian Patent Application No. 2007256601 (hide)

International Classifications

Event Publications

8 January 2009 PCT application entered the National Phase

PCT publication WO2007/143749 Priority application(s): WO2007/143749

2 February 2012 Application Accepted

Published as AU-B-2007256601

31 May 2012 Standard Patent Sealed

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