TREA

Kei Kawaguchi

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of recovering a cleaning agent
    • Patent number 7,297,315
    • Issue date Nov 20, 2007
    • Japan Pionics Co., Ltd.
    • Kenji Otsuka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Method of recovering a cleaning agent
    • Patent number 6,716,403
    • Issue date Apr 6, 2004
    • Japan Pionics Co., Ltd.
    • Kenji Otsuka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

  • Information Patent Application

    Method of recovering a cleaning agent
    • Publication number 20040151644
    • Publication date Aug 5, 2004
    • Kenji Otsuka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Method fo recovering a cleaning agent
    • Publication number 20020084220
    • Publication date Jul 4, 2002
    • Kenji Otsuka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...