TREA

Akira Matsumoto

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  • Tochigi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Production process of machinable ceramics
    • Patent number 5,026,412
    • Issue date Jun 25, 1991
    • Mitsui Mining Company, Limited
    • Takashi Ooishi
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Alumina-base abrasion resistant material
    • Patent number 4,719,188
    • Issue date Jan 12, 1988
    • Mitsui Mining Co., Ltd.
    • Keiichiro Koba
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES