Multi-gradient drilling method and system

Details for Australian Patent Application No. 2001275370 (hide)

Owner Maurer Technology Incorporated

Inventors McDonald, William J.; Medley Jr., George H.; Maurer, William C.

Agent Freehills

Pub. Number AU-B-2001275370

PCT Pub. Number WO01/94740

Priority 60210419 08.06.00 US; 09874179 05.06.01 US

Filing date 8 June 2001

Wipo publication date 17 December 2001

Acceptance publication date 11 August 2005

International Classifications

E21B 021/08 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

E21B 021/00 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Event Publications

11 August 2005 Application Accepted

  Published as AU-B-2001275370

8 December 2005 Standard Patent Sealed

31 January 2008 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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.

Legal

The information provided by the Site not in the nature of legal or other professional advice. The information provided by the Site is derived from third parties and may contain errors. You must make your own enquiries and seek independent advice from the relevant industry professionals before acting or relying on any information contained herein. Check the above data against the Australian Patent Office AUSPAT database.

Next and Previous Patents/Applications

2001275371-Powder compositions

2001275369