TREA

Keiji Okada

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  • Hyogo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing a spiral wound gasket and a device for producin...
    • Patent number 6,195,867
    • Issue date Mar 6, 2001
    • Nippon Pillar Packing Co., Ltd.
    • Hideto Hashiguchi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Vortex gasket for automotive exhaust system
    • Patent number 5,454,604
    • Issue date Oct 3, 1995
    • Toyoda Jidosha Kabushiki Kaisha
    • Hideo Yahagi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Vortex gasket for automative exhaust system
    • Patent number 5,411,274
    • Issue date May 2, 1995
    • Toyota Jidosha Kabushiki Kaisha
    • Hideo Yahagi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Spiral wound gasket
    • Patent number 5,308,090
    • Issue date May 3, 1994
    • Nippon Pillar Packing Co., Ltd.
    • Eiichi Hamada
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...