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Brian K. Ball

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  • Ford Dodge, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Compositions with synthetic gypsum and methods
    • Patent number 9,944,556
    • Issue date Apr 17, 2018
    • United States Gypsum Company
    • Dennis Mark Lettkeman
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Oil well cementing products with synthetic gypsum and methods
    • Patent number 9,346,996
    • Issue date May 24, 2016
    • United States Gypsum Company
    • Dennis Mark Lettkeman
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Gypsum mixtures for forming solids
    • Patent number 7,754,007
    • Issue date Jul 13, 2010
    • United States Gypsum Company
    • Dennis Lettkeman
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    COMPOSITIONS WITH SYNTHETIC GYPSUM AND METHODS
    • Publication number 20160107931
    • Publication date Apr 21, 2016
    • United States Gypsum Company
    • Dennis Mark Lettkeman
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Application

    GYPSUM MIXTURES FOR FORMING SOLIDS
    • Publication number 20090101045
    • Publication date Apr 23, 2009
    • Dennis Lettkeman
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES