Patents by Inventor David B. Stokes

David B. Stokes 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).

  • LITHIUM-BASED CONCRETE ADMIXTURES FOR CONTROLLING ALKALI-SILICA REACTIONS WITH ENHANCED SET-TIME CONTROL AND PROCESSES FOR MAKING THE SAME
    Publication number: 20130008355
    Abstract: A process for making concrete which is stabilized against alkali-silica reactivity (ASR) is provided. The process includes incorporating into the concrete mixture a concrete admixture mixture comprising water, first lithium-containing materials in an amount sufficient to control ASR, and second lithium-containing materials in an amount sufficient for controlling set time, and optionally mineral admixtures and other chemical admixtures for property enhancements exclusive of ASR mitigation and/or set time control, to form the concrete. An admixture for stabilizing concrete against ASR is also provided.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 10, 2013
    Inventor: David B. Stokes
  • Deicing composition
    Patent number: 8128835
    Abstract: A deicing composition is provided. The composition includes a potassium or sodium salt of a carboxylic acid and a lithium salt of a carboxylic acid or lithium nitrate, wherein the molar ratio of lithium to potassium or lithium to sodium is from 10 percent to 80 percent.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: March 6, 2012
    Assignees: FMC Corporation, Lithium Division, Clemson University
    Inventors: David B. Stokes, Daniel Person Johnston, Prasada Rao Rangaraju, Vijay C. Mehta, Claudio E. Manissero
  • Deicing Composition
    Publication number: 20110185943
    Abstract: A deicing composition is provided. The composition includes a potassium or sodium salt of a carboxylic acid and a lithium salt of a carboxylic acid or lithium nitrate, wherein the molar ratio of lithium to potassium or lithium to sodium is from 10 percent to 80 percent.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Inventors: David B. Stokes, Daniel Person Johnston, Prasada Rao Rangaraju, Vijay C. Mehta, Claudio E. Manissero
  • Deicing composition
    Patent number: 7943057
    Abstract: A deicing composition is provided. The composition includes a potassium or sodium salt of a carboxylic acid and a lithium salt of a carboxylic acid or lithium nitrate, wherein the molar ratio of lithium to potassium or lithium to sodium is from 10 percent to 80 percent.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: May 17, 2011
    Assignee: FMC Corporation
    Inventors: David B. Stokes, Daniel Person Johnston, Prasada Rao Rangaraju, Vijay C. Mehta, Claudio E. Manissero
  • DEICING COMPOSITION
    Publication number: 20100064932
    Abstract: A deicing composition is provided. The composition includes a potassium or sodium salt of a carboxylic acid and a lithium salt of a carboxylic acid or lithium nitrate, wherein the molar ratio of lithium to potassium or lithium to sodium is from 10 percent to 80 percent.
    Type: Application
    Filed: November 25, 2009
    Publication date: March 18, 2010
    Inventors: David B. Stokes, Daniel Person Johnston, Prasada Rao Rangaraju, Vijay C. Mehta, Claudio E. Manissero
  • Cements including lithium glass compositions
    Patent number: 6500254
    Abstract: Lithium glass capable of minimizing the effects of alkali silica reaction in concrete. The lithium glass includes a glass forming oxide; lithium oxide; and optionally a glass network modifying oxide. The lithium glass can be also essentially free of sodium or potassium ions.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: December 31, 2002
    Assignee: FMC Corporation
    Inventors: Stephen Baxter, David B. Stokes
  • Cement and concrete compositions for controlling alkali-silica reaction in concrete
    Patent number: 6022408
    Abstract: Processes for making cement which when used to make concrete can stabilize the concrete against alkali-silica reactivity (ASR) from alkali containing components. The process includes adding lithium containing materials in the front of a cement kiln along with the cement starting materials in an amount sufficient to minimize ASR.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: February 8, 2000
    Assignee: FMC Corporation
    Inventors: David B. Stokes, Gary E. Foltz, Claudio E. Manissero
  • Cement compositions for controlling alkali-silica reactions in concrete and processes for making same
    Patent number: 5755876
    Abstract: Processes for making cement which when used to make concrete can stabilize the concrete against alkali-silica reactivity (ASR) from alkali containing components. The process includes adding lithium containing materials in the front of a cement kiln along with the cement starting materials in an amount sufficient to minimize ASR.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: May 26, 1998
    Assignee: FMC Corporation
    Inventors: David B. Stokes, Gary E. Foltz, Claudio E. Manissero