METHOD FOR SEPARATING ZIRCONIUM AND HAFNIUM TETRACHLORIDE WITH THE AID OF A MELTED SOLVENT

Details for Australian Patent Application No. 2002307998 (hide)

Owner COMPAGNIE EUROPEENNE DU ZIRCONIUM CEZUS

Inventors DELONS, Laurence; PICARD, Gerard; TIGREAT, Delphine

Pub. Number AU-A-2002307998

PCT Number PCT/FR02/01292

PCT Pub. Number WO2002/083960

Priority 01/05262 18.04.01 FR

Filing date 12 April 2002

Wipo publication date 28 October 2002

International Classifications

C22B 034/14 Obtaining refractory metals

C01G 025/04 Compounds of zirconium

C01G 027/04 Compounds of hafnium

B01D 005/00 Condensation of vapours

B01D 003/40 Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping

Event Publications

19 December 2002 Complete Application Filed

  Priority application(s): 01/05262 18.04.01 FR

17 April 2003 Application Open to Public Inspection

  Published as AU-A-2002307998

19 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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