Process for production of essentially chloride-free calcium sulfonate

Details for Australian Patent Application No. 2004232952 (hide)

Owner Shell Internationale Research Maatschappij B.V.

Inventors De Kraker, Abraham Robert; Holmes, Steven Allen; Kaushik, Krishna Rangraj

Agent Spruson & Ferguson

Pub. Number AU-B-2004232952

PCT Pub. Number WO2004/094366

Priority 10/417,788 17.04.03 US

Filing date 15 April 2004

Wipo publication date 4 November 2004

Acceptance publication date 24 January 2008

International Classifications

C07C 303/32 (2006.01) Preparation of esters or amides of sulfuric acids

C10M 135/10 (2006.01) Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium

C10M 159/24 (2006.01) Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution

C07C 309/62 (2006.01) Sulfonic acids

Event Publications

10 November 2005 PCT application entered the National Phase

  PCT publication WO2004/094366 Priority application(s): WO2004/094366

24 January 2008 Application Accepted

  Published as AU-B-2004232952

22 May 2008 Standard Patent Sealed

12 November 2009 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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