Apparatus for gripping a tubular on a drilling rig

Details for Australian Patent Application No. 2006325824 (hide)

Owner Weatherford, Inc.

Inventors Thompson, Gary; Le, Tuong Thanh; Heidecke, Karsten; Boutwell Jr., Doyle Frederic; Odell II, Albert C.; Giroux, Richard Lee; Pietras, Bernd-Georg; Loenz, Joerg; Hayes, Michael

Agent Pizzeys

Pub. Number AU-B-2006325824

PCT Pub. Number WO2007/070805

Priority 60/749,451 12.12.05 US

Filing date 12 December 2006

Wipo publication date 21 June 2007

Acceptance publication date 20 May 2010

International Classifications

E21B 19/16 (2006.01) Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick

E21B 33/16 (2006.01) Sealing or packing boreholes or wells

Event Publications

3 July 2008 PCT application entered the National Phase

  PCT publication WO2007/070805 Priority application(s): WO2007/070805

20 May 2010 Application Accepted

  Published as AU-B-2006325824

16 September 2010 Standard Patent Sealed

5 July 2012 Application for Amendment

  The nature of the amendment is: Amend the name of the inventor to read Le, Tuong Thanh; Lorenz, Joerg; Odell II, Albert C.; Boutwell Jr., Doyle Frederic; Pietras, Bernd-Georg; Heidecke, Karsten; Giroux, Richard Lee; Hayes, Michael and Thompson, Gar . Address for service in Australia - Pizzeys Patent and Trade Mark Attorneys Level 20 324 Queen Street Brisbane QLD 4000

25 October 2012 Amendment Made

  The nature of the amendment is: Amend the name of the inventor to read Le, Tuong Thanh; Lorenz, Joerg; Odell II, Albert C.; Boutwell Jr., Doyle Frederic; Pietras, Bernd-Georg; Heidecke, Karsten; Giroux, Richard Lee; Hayes, Michael and Thompson, Gary

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