TREA

Natsuko Hirayanagi

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  • Tochigi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Roll forming system for forming flanges in strip material
    • Patent number 6,928,847
    • Issue date Aug 16, 2005
    • Calsonic Kansei Corporation
    • Tomoaki Akutsu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Formed strip and roll forming
    • Patent number 6,539,628
    • Issue date Apr 1, 2003
    • Calsonic Kansei Corporation
    • Tomoaki Akutsu
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Formed strip and roll forming
    • Patent number 6,423,423
    • Issue date Jul 23, 2002
    • Calsonic Kansei Corporation
    • Tomoaki Akutsu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    Formed strip and roll forming
    • Publication number 20020134126
    • Publication date Sep 26, 2002
    • CALSONIC KANSEI CORPORATION
    • Tomoaki Akutsu
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Formed strip and roll forming
    • Publication number 20020136918
    • Publication date Sep 26, 2002
    • CALSONIC KANSEI CORPORATION
    • Tomoaki Akutsu
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    FORMED STRIP AND ROLL FORMING
    • Publication number 20010053457
    • Publication date Dec 20, 2001
    • TOMOAKI AKUTSU
    • F28 - HEAT EXCHANGE IN GENERAL