Patents by Inventor Bill Carruthers

Bill Carruthers 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).

  • Low density cementitious compositions using limestone
    Patent number: 8858704
    Abstract: A manufactured cementitious binder includes a hydraulic binder in an amount in the range of from 40 to 75% by weight of the cementitious binder; metakaolin in an amount in the range of from 1 to 30% by weight of the cementitious binder; silica fume in an amount up to 15% by weight of the cementitious binder; limestone in an amount of from 5 to 30% by weight of the cementitious binder, and a cementitious accelerator in a controlled amount of at least 0.5% by weight of the cementitious binder, the cementitious binder providing a cementitious settable composition when added with water, wherein for a density lower than 13 pounds per gallon and of at least 11 pounds per gallon obtained without a lightweight additive, said cementitious settable composition exhibits a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: October 14, 2014
    Assignee: Lafarge
    Inventors: Wes Woytowich, Bill Carruthers, Paul Lehoux, Greg Daderko
  • Low density cementitious compositions using lime kiln dust
    Patent number: 8435930
    Abstract: A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount in the range of from about 1 to 30% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; lime kiln dust in an amount of from about 5 to 30% by weight of the cementitious binder, and a cementitious accelerator in an amount greater than about 0.1% by weight of the cementitious binder, wherein the cementitious binder provides a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: May 7, 2013
    Assignee: LaFarge
    Inventors: Wes Woytowich, Bill Carruthers, Paul Lehoux, Greg Daderko
  • Low density cementitious compositions
    Patent number: 8394744
    Abstract: A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount greater than about 5% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; and cement kiln dust in an amount greater than about 10% by weight of the cementitious binder, the cement kiln dust including chlorine in an amount of at least 0.1% by weight of the cement kiln dust, the cementitious binder providing a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: March 12, 2013
    Assignee: LaFarge
    Inventors: Wes Woytowich, Bill Carruthers, Benoit Cotnoir, Paul Lehoux, Richard McCorkle, Eric Bowman
  • LOW DENSITY CEMENTITIOUS COMPOSITIONS USING LIMESTONE
    Publication number: 20120012315
    Abstract: A manufactured cementitious binder includes a hydraulic binder in an amount in the range of from 40 to 75% by weight of the cementitious binder; metakaolin in an amount in the range of from 1 to 30% by weight of the cementitious binder; silica fume in an amount up to 15% by weight of the cementitious binder; limestone in an amount of from 5 to 30% by weight of the cementitious binder, and a cementitious accelerator in a controlled amount of at least 0.5% by weight of the cementitious binder, the cementitious binder providing a cementitious settable composition when added with water, wherein for a density lower than 13 pounds per gallon and of at least 11 pounds per gallon obtained without a lightweight additive, said cementitious settable composition exhibits a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Application
    Filed: July 14, 2011
    Publication date: January 19, 2012
    Applicant: LAFARGE
    Inventors: Wes Woytowich, Bill Carruthers, Paul Lehoux, Greg Daderko
  • LOW DENSITY CEMENTITIOUS COMPOSITIONS USING LIME KILN DUST
    Publication number: 20120012314
    Abstract: A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount in the range of from about 1 to 30% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; lime kiln dust in an amount of from about 5 to 30% by weight of the cementitious binder, and a cementitious accelerator in an amount greater than about 0.1% by weight of the cementitious binder, wherein the cementitious binder provides a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Application
    Filed: July 14, 2011
    Publication date: January 19, 2012
    Applicant: LAFARGE
    Inventors: Wes Woytowich, Bill Carruthers, Paul Lehoux, Greg Daderko
  • LOW DENSITY CEMENTITIOUS COMPOSITIONS
    Publication number: 20100294496
    Abstract: A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount greater than about 5% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; and cement kiln dust in an amount greater than about 10% by weight of the cementitious binder, the cement kiln dust including chlorine in an amount of at least 0.1% by weight of the cement kiln dust, the cementitious binder providing a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100 F, as hardened, of at least 500 psi.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 25, 2010
    Applicant: LAFARGE
    Inventors: Wes Woytowich, Bill Carruthers, Benoit Cotnoir, Paul Lehoux, Richard McCorkle, Eric Bowman