Sonic heads and assemblies and uses thereof

Details for Australian Patent Application No. 2004250089 (hide)

Owner Flexidrill Limited

Inventors Pfahlert, Roger

Agent A J Park

Pub. Number AU-B-2004250089

PCT Pub. Number WO2004/113668

Priority 531833 18.03.04 NZ; 532050 30.03.04 NZ; 526639 20.06.03 NZ

Filing date 18 June 2004

Wipo publication date 29 December 2004

Acceptance publication date 26 June 2008

International Classifications

E02D 3/054 (2006.01) Improving or preserving soil or rock, e.g. preserving permafrost soil

E21B 7/24 (2006.01) Special methods or apparatus for drilling

E21B 28/00 (2006.01) Vibration generating arrangements for boreholes or wells, e.g. for stimulating production

Event Publications

15 December 2005 PCT application entered the National Phase

  PCT publication WO2004/113668 Priority application(s): WO2004/113668

26 June 2008 Application Accepted

  Published as AU-B-2004250089

23 October 2008 Standard Patent Sealed

20 January 2011 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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