Patents by Inventor Kristen Van Buskirk
Kristen Van Buskirk 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).
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Patent number: 8048219Abstract: A method of placing a concrete compositions including a) combining 3-40 volume percent cement, 5-50 volume percent fine aggregate, 5-50 volume percent coarse aggregate, and 10-22 volume percent water; b) adding 1.5-40 volume percent of prepuff particles to form a concrete composition; and c) pumping the concrete composition to a point higher in elevation than the delivery point of the concrete to place the concrete. The concrete composition contains less than 30 volume percent of other light weighting aggregates and the prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the placed concrete measured according to ASTM C 143 is greater than 1 inch and the concrete has a density of from about 40 to about 135 lb./ft3.Type: GrantFiled: September 17, 2008Date of Patent: November 1, 2011Assignee: NOVA Chemicals Inc.Inventors: Daniel Woolfsmith, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk, Tricia Guevara Ladely
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Publication number: 20110003904Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent;. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: ApplicationFiled: September 14, 2010Publication date: January 6, 2011Applicant: NOVA CHEMICALS INC.Inventors: Tricia Guevara, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk
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Publication number: 20100273902Abstract: Methods of controlling the durability of and/or the amount of air in concrete formulations that include combining cement, water, and optionally aggregates, admixtures and/or additives to form a cement mixture; and adding prepuff particles to the cement mixture to form a concrete formulation. The prepuff particles have an average particle diameter of from 0.2 mm to 3 mm, a bulk density of from 0.015 g/cc to 0.35 g/cc, an aspect ratio of from 1 to 3, and a smooth continuous outer surface. The cured and hardened concrete formulation typically has a relative dynamic modulus of at least 70% determined according to Procedure A of ASTM C666 (2003). The amount of air in the concrete typically increases over the amount of air in similar formulations not containing prepuff particles, as determined according to ASTM C231, based on the volume percent of prepuff. The concrete formulations can be used to make articles.Type: ApplicationFiled: July 6, 2010Publication date: October 28, 2010Applicant: NOVA CHEMICALS INC.Inventors: Tricia G Ladely, Blain Hileman, Kristen Van Buskirk, Rick Hughes, Jiansheng Tang, Daniel Woolfsmith
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Publication number: 20100098524Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent;. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: ApplicationFiled: December 18, 2009Publication date: April 22, 2010Applicant: NOVA CHEMICALS INC.Inventors: Tricia Guevara, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk
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Patent number: 7658797Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: GrantFiled: October 25, 2006Date of Patent: February 9, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk
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Patent number: 7648574Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: GrantFiled: October 31, 2007Date of Patent: January 19, 2010Assignee: NOVA Chemicals Inc.Inventors: Tricia Guevara, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk
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Publication number: 20090081446Abstract: A method of placing a concrete compositions including a) combining 3-40 volume percent cement, 5-50 volume percent fine aggregate, 5-50 volume percent coarse aggregate, and 10-22 volume percent water; b) adding 1.5-40 volume percent of prepuff particles to form a concrete composition; and c) pumping the concrete composition to a point higher in elevation than the delivery point of the concrete to place the concrete. The concrete composition contains less than 30 volume percent of other light weighting aggregates and the prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the placed concrete measured according to ASTM C 143 is greater than 1 inch and the concrete has a density of from about 40 to about 135 lb./ft3.Type: ApplicationFiled: September 17, 2008Publication date: March 26, 2009Applicant: NOVA CHEMICALS INC.Inventors: Daniel Woolfsmith, Michael T. Williams, Rick Hughes, Michael R. Kelley, John K. Madish, Kristen Van Buskirk, Tricia Guevara Ladely
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Publication number: 20080275149Abstract: Methods of controlling the durability of and/or the amount of air in concrete formulations that include combining cement, water, and optionally aggregates, admixtures and/or additives to form a cement mixture; and adding prepuff particles to the cement mixture to form a concrete formulation. The prepuff particles have an average particle diameter of from 0.2 mm to 3 mm, a bulk density of from 0.015 g/cc to 0.35 g/cc, an aspect ratio of from 1 to 3, and a smooth continuous outer surface. The cured and hardened concrete formulation typically has a relative dynamic modulus of at least 70% determined according to Procedure A of ASTM C666 (2003). The amount of air in the concrete typically increases over the amount of air in similar formulations not containing prepuff particles, as determined according to ASTM C231, based on the volume percent of prepuff. The concrete formulations can be used to make articles.Type: ApplicationFiled: April 28, 2008Publication date: November 6, 2008Applicant: NOVA CHEMICALS INC.Inventors: Tricia G. Ladely, Blain Hileman, Kristen Van Buskirk, Rick Hughes, Jiansheng Tang, Daniel Woolfsmith
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Publication number: 20080058446Abstract: A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39.Type: ApplicationFiled: October 31, 2007Publication date: March 6, 2008Applicant: NOVA CHEMICALS INC.Inventors: Tricia Guevara, Michael Williams, Rick Hughes, Michael Kelley, John Madish, Kristen Van Buskirk