COPOLYMERS USEFUL FOR GELLING ACIDS

Details for Australian Patent Application No. 2002326858 (hide)

Owner BAKER HUGHES INCORPORATED

Inventors POELKER, David, J.; MCMAHON, JoAnn; HARKEY, Dee

Pub. Number AU-A-2002326858

PCT Number PCT/US02/28711

PCT Pub. Number WO2003/040521

Priority 10/045,221 07.11.01 US

Filing date 9 September 2002

Wipo publication date 19 May 2003

International Classifications

E21B 043/27 Obtaining fluids from wells

C08L 033/08 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof

C08L 033/26 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof

Event Publications

23 January 2003 Complete Application Filed

  Priority application(s): 10/045,221 07.11.01 US

24 July 2003 Application Open to Public Inspection

  Published as AU-A-2002326858

22 July 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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