Nihon Doro Kodan

Organization

  • Tokyo, JP

Patents Grantslast 30 patents

  • Information Patent Grant

    Noise barrier wall

    • Patent number 6,019,189
    • Issue date Feb 1, 2000
    • Bridgestone Corporation
    • Hiroshi Shima
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Noise barrier and method of installing same

    • Patent number 5,971,096
    • Issue date Oct 26, 1999
    • Nihon Doro Kodan
    • Koich Matsumoto
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES