Isao Negishi

Person

  • Kawaguchi, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Noise insulating material

    • Patent number 5,064,890
    • Issue date Nov 12, 1991
    • Tatsuta Electric Wire and Cable Co., Ltd.
    • Hidekazu Tsurumaru
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES