TREA

Akira Yagi

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  • Otsu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electretized material for a dust filter
    • Patent number 4,789,504
    • Issue date Dec 6, 1988
    • Toyo Boseki Kabushiki Kaisha
    • Susumu Ohmori
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Electretized material for a dust filter
    • Patent number 4,652,282
    • Issue date Mar 24, 1987
    • Toyo Boseki Kabushiki Kaisha
    • Susumu Ohmori
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL