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Masaaki Maruyama

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  • Kyoto, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Automatic releasing-type rolling head for forming tapered thread on...
    • Patent number 7,373,796
    • Issue date May 20, 2008
    • Rex Industries Co., Ltd.
    • Toshifumi Kubota
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Adjusting apparatus for roll threading die head
    • Patent number 5,699,691
    • Issue date Dec 23, 1997
    • Rex Industries Co., Ltd.
    • Masaaki Maruyama
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Pipe cutter
    • Patent number 4,443,943
    • Issue date Apr 24, 1984
    • Rex Industries Co., Ltd.
    • Masaaki Maruyama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Die-head of cutting machine
    • Patent number 4,329,093
    • Issue date May 11, 1982
    • Masaaki Maruyama
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents