TREA

Forskningsgruppe for Sjeldne Jordarter

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  • Oslo, NO
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mixer-settler apparatus
    • Patent number 4,352,574
    • Issue date Oct 5, 1982
    • Forskningsgruppe for Sjeldne Jordarter
    • Norvald Gjelsvik
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Process for separation of the lanthanides
    • Patent number 4,041,125
    • Issue date Aug 9, 1977
    • Forskningsgruppe for Sjeldne Jordarter
    • Jorolf Alstad
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Apparatus for liquid-liquid countercurrent extraction
    • Patent number 3,997,445
    • Issue date Dec 14, 1976
    • Forskningsgruppe For Sjeldne, Jordarter
    • Gunnar Hannestad
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL