TREA

Shigeyoshi Tanaka

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Squeezing and chamfering device for tube end
    • Patent number 4,827,754
    • Issue date May 9, 1989
    • Kabushiki Kaisha Watanabe Kogyo
    • Shigeyoshi Tanaka
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tapered thread roll-forming machine
    • Patent number 4,785,649
    • Issue date Nov 22, 1988
    • Kabushiki Kaisha Watanabe Kogyo
    • Takashi Watanabe
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Apparatus for forming tapered threads on pipes
    • Patent number 4,771,625
    • Issue date Sep 20, 1988
    • Kabushiki Kaisha Watanabe Kogyo
    • Takashi Watanabe
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...