Patents by Inventor David Linith Rigsbee

David Linith Rigsbee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sodium-free, lithium-containing concrete cleaning compositions and method for use thereof
    Patent number: 7828902
    Abstract: Compositions for cleaning concrete or other cementitious substrates that do not contribute to the alkali-silicate reaction are provided, and methods for use thereof The cleaning compositions comprise lithium salts such as lithium hydroxide, lithium oxide and/or lithium carbonate, at least one surface active agent, optionally a glycol ether and/or hydrocarbon solvent, a sodium-free or substantially sodium-free chelating agent or agents and/or one or more adjuncts at least partially contributing to the useful properties of the composition.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: November 9, 2010
    Assignee: Chemtek, Inc.
    Inventors: Michael Gates Kinnaird, David Linith Rigsbee
  • SODIUM-FREE, LITHIUM-CONTAINING CONCRETE CLEANING COMPOSITIONS AND METHOD FOR USE THEREOF
    Publication number: 20080127995
    Abstract: Compositions for cleaning concrete or other cementitious substrates that do not contribute to the alkali-silicate reaction are provided, and methods for use thereof. The cleaning compositions comprise lithium salts such as lithium hydroxide, lithium oxide and/or lithium carbonate, at least one surface active agent, optionally a glycol ether and/or hydrocarbon solvent, a sodium-free or substantially sodium-free chelating agent or agents and/or one or more adjuncts at least partially contributing to the useful properties of the composition.
    Type: Application
    Filed: February 11, 2008
    Publication date: June 5, 2008
    Inventors: Michael Gates Kinnaird, David Linith Rigsbee