POLYAMPHOTERIC POLYMERS FOR RAW WATER TREATMENT

Details for Australian Patent Application No. 2002253854 (hide)

Owner ONDEO NALCO COMPANY

Inventors BRADEN, Michael, L.; JOHNSON, Brian, S.; STAPLES, Christine, A.

Pub. Number AU-A-2002253854

PCT Pub. Number WO2002/076892

Priority 09/815,790 23.03.01 US

Filing date 8 January 2002

Wipo publication date 8 October 2002

International Classifications

C02F 001/56 Treatment of water, waste water, or sewage

Event Publications

27 March 2003 Application Open to Public Inspection

  Published as AU-A-2002253854

19 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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