TREA

Yoshikazu Oe

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  • Hiroshima, JA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of making a composite metal casting
    • Patent number 4,023,613
    • Issue date May 17, 1977
    • Toyo Kogyo Co., Ltd.
    • Yositaka Uebayasi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Metal made of steel plate and aluminum material
    • Patent number 4,005,991
    • Issue date Feb 1, 1977
    • Toyo Kogyo Co., Ltd.
    • Yositaka Uebayasi
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...