TREA

of the phosphonium (PR4) type

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Industry

  • CPC
  • C22B3/0055
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Parent Industries

CCHEMISTRY METALLURGY C22Metallurgy C22BPRODUCTION AND REFINING OF METALS PRETREATMENT OF RAW MATERIALS C22B3/00Extraction of metal compounds from ores or concentrates by wet processes

Current Industry

C22B3/0055of the phosphonium (PR4) type
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Process for separating tungsten from coinage metals
    • Patent number 4,374,713
    • Issue date Feb 22, 1983
    • GTE Laboratories Incorporated
    • Samuel Natansohn
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Grant

    Removal of iron from aqueous acid solutions containing iron and copper
    • Patent number 3,985,856
    • Issue date Oct 12, 1976
    • Continental Oil Company
    • Morris A. Johnson
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    3804941
    • Patent number 3,804,941
    • Issue date Apr 16, 1974
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    2102103
    • Patent number 2,102,103
    • Issue date Dec 14, 1937
    • C07 - ORGANIC CHEMISTRY