Viscoelastic compositions

Details for Australian Patent Application No. 2002231958 (hide)

Owner Sofitech N.V.

Inventors Hughes, Trevor; Zhou, Jian

Agent Griffith Hack

Pub. Number AU-B-2002231958

PCT Pub. Number WO2002/064945

Priority 0103449.5 13.02.01 GB

Filing date 13 February 2002

Wipo publication date 28 August 2002

Acceptance publication date 2 August 2007

International Classifications

B01F 17/00 (2006.01) Use of substances as emulsifying, wetting, dispersing, or foam-producing agents

C09K 8/62 (2006.01) Compositions for drilling of boreholes or wells

C09K 8/68 (2006.01) Compositions for drilling of boreholes or wells

Event Publications

20 February 2003 Application Open to Public Inspection

  Published as AU-B-2002231958

2 August 2007 Application Accepted

  Published as AU-B-2002231958

1 November 2007 Application for Amendment

  The nature of the amendment is as shown in the statement(s) filed 17 Oct 2007. Address for service in Australia - Griffith Hack Level 3 509 St Kilda Road Melbourne VIC 3004

6 December 2007 Standard Patent Sealed

3 April 2008 Amendment Made

  The nature of the amendment is as shown in the statement(s) filed 17 Oct 2007

17 April 2008 Assignment Registered

  Sofitech N.V. The patent has been assigned to Schlumberger Technology B.V.

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