TREA

Richard J. Hartman

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  • Clarence, NY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Z-shaped sheet piling
    • Patent number 7,360,969
    • Issue date Apr 22, 2008
    • Chaparral Steel Company
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Z-shaped sheet piling
    • Patent number 7,168,891
    • Issue date Jan 30, 2007
    • Chaparral Steel Company
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Z-shaped sheet piling
    • Patent number 7,018,140
    • Issue date Mar 28, 2006
    • Chaparral Steel Company
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Z-shaped sheet piling
    • Patent number 6,420,014
    • Issue date Jul 16, 2002
    • L.B. Foster Company
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    Z-shaped sheet piling
    • Publication number 20070092342
    • Publication date Apr 26, 2007
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Z-shaped sheet piling
    • Publication number 20060115336
    • Publication date Jun 1, 2006
    • Richard J. Hartman
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING