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Shoji Kawai

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Patents Grantslast 30 patents

  • Information Patent Grant

    Railway rail supporting pad
    • Patent number 7,775,455
    • Issue date Aug 17, 2010
    • Daiwa Gravure Co., Ltd.
    • Shoji Kawai
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Bridge sleeper supporting pad
    • Patent number 7,634,832
    • Issue date Dec 22, 2009
    • Daiwa Gravure Co., Ltd.
    • Shoji Kawai
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

  • Information Patent Application

    Railway rail supporting pad
    • Publication number 20080116291
    • Publication date May 22, 2008
    • Daiwa Gravure Co., Ltd.
    • Shoji Kawai
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Bridge sleeper supporting pad
    • Publication number 20080115298
    • Publication date May 22, 2008
    • Daiwa Gravure Co., Ltd.
    • Shoji Kawai
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES