PREVENTING A MEMBRANE FROM BLOCKING UP DURING THE TREATMENT OF WASTE WATER DURING PHOSPHATIZATION

Details for Australian Patent Application No. 2002344998 (hide)

Owner HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN

Inventors KUHM, Peter; PEIROW, Iradj; BROUWER, Jan-Willem

Pub. Number AU-A-2002344998

PCT Number PCT/EP02/05963

PCT Pub. Number WO2002/101115

Priority 102 05 982.9 14.02.02 DE; 101 27 918.3 08.06.01 DE; 101 42 933.9 01.09.01 DE

Filing date 31 May 2002

Wipo publication date 23 December 2002

International Classifications

C23C 022/86 Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals - Regeneration of coating baths

C02F 001/44 Treatment of water, waste water, or sewage - by dialysis, osmosis or reverse osmosis

B01D 061/04 Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration

B01D 065/06 Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes

Event Publications

6 March 2003 Complete Application Filed

  Priority application(s): 102 05 982.9 14.02.02 DE; 101 27 918.3 08.06.01 DE; 101 42 933.9 01.09.01 DE

15 May 2003 Application Open to Public Inspection

  Published as AU-A-2002344998

11 March 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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