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Yasuo Ojima

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  • Ehime-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of smelting copper sulfide concentrate
    • Patent number 6,843,827
    • Issue date Jan 18, 2005
    • Sumitomo Metal Mining Co., Ltd.
    • Yasuo Ojima
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Flash smelting furnace
    • Patent number 4,848,754
    • Issue date Jul 18, 1989
    • Sumitomo Metal Mining Company Ltd.
    • Nobumasa Kemori
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for operation of flash smelting furnace
    • Patent number 4,824,362
    • Issue date Apr 25, 1989
    • Sumitomo Metal Mining Company Limited
    • Takayoshi Kimura
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Flash smelting furnace
    • Patent number 4,798,532
    • Issue date Jan 17, 1989
    • Sumitomo Metal Mining Company Limited
    • Takayoshi Kimura
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method for recovery of Zn and Pb from iron and steel dust
    • Patent number 4,525,208
    • Issue date Jun 25, 1985
    • Sumitomo Metal Mining Company Limited
    • Motohiro Yasukawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents