TREA

Minoru Kawaharada

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  • Kitakyushu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Press-rolling process for producing a metal tubular product
    • Patent number 4,455,849
    • Issue date Jun 26, 1984
    • Nippon Steel Corporation
    • Shigeru Uchida
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of rolling metal strip
    • Patent number 4,382,375
    • Issue date May 10, 1983
    • Nippon Steel Corporation
    • Hiroyasu Yamamoto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Press roll piercing method
    • Patent number 4,190,887
    • Issue date Feb 26, 1980
    • Nippon Steel Corporation
    • Seishiro Yoshiwara
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method and apparatus for rolling metallic material
    • Patent number 4,106,318
    • Issue date Aug 15, 1978
    • Nippon Steel Corporation
    • Samon Yanagimoto
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...