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Tadashi Nagai

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Exhaust gas control valve
    • Patent number 7,426,979
    • Issue date Sep 23, 2008
    • Calsonic Kansei Corporation
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Flexible tube
    • Patent number 6,848,478
    • Issue date Feb 1, 2005
    • Calsonic Kansei Corporation
    • Tadashi Nagai
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve structure for engine exhaust system
    • Patent number 6,736,160
    • Issue date May 18, 2004
    • Calsonic Kansei Corporation
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Pressure sensible valve for exhaust muffler and method of assemblin...
    • Patent number 6,637,449
    • Issue date Oct 28, 2003
    • Calsonic Kansei Corporation
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Valve for a control muffler
    • Patent number 6,581,721
    • Issue date Jun 24, 2003
    • Calsonic Kansei Corporation
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Metal thin film for metal catalyst carrier and metal catalyst conve...
    • Patent number 6,287,523
    • Issue date Sep 11, 2001
    • Calsonic Kansei Corporation
    • Junichiroh Hirohashi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Flexible pipe unit for use in exhaust pipe line of automotive engine
    • Patent number 5,967,193
    • Issue date Oct 19, 1999
    • Calsonic Corporation
    • Tadashi Nagai
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Circular plate spring
    • Patent number 5,915,677
    • Issue date Jun 29, 1999
    • Calsonic Corporation
    • Kazuo Yajima
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    Exhaust gas control valve
    • Publication number 20060150620
    • Publication date Jul 13, 2006
    • CALSONIC KANSEI CORPORATION
    • Tadashi Nagai
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Flexible tube
    • Publication number 20030150502
    • Publication date Aug 14, 2003
    • CALSONIC KANSEI CORPORATION
    • Tadashi Nagai
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Valve structure for engine exhaust system
    • Publication number 20020104503
    • Publication date Aug 8, 2002
    • CALSONIC KANSEI CORPORATION
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    Valve for a control muffler
    • Publication number 20020033303
    • Publication date Mar 21, 2002
    • CALSONIC KANSEI CORPORATION
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Application

    Pressure sensible valve for exhaust muffler and method of assemblin...
    • Publication number 20020029807
    • Publication date Mar 14, 2002
    • Tadashi Nagai
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC