Patents by Inventor David D. Kragten

David D. Kragten 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).

  • Publication number: 20230323667
    Abstract: This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.
    Type: Application
    Filed: June 9, 2023
    Publication date: October 12, 2023
    Inventors: David D. Kragten, Daniel E. Rardon
  • Patent number: 11718991
    Abstract: This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: August 8, 2023
    Assignee: Specialty Granules Investments LLC
    Inventors: David D. Kragten, Daniel E. Rardon
  • Publication number: 20220018134
    Abstract: This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Inventors: David D. Kragten, Daniel E. Rardon
  • Patent number: 11136760
    Abstract: This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: October 5, 2021
    Assignee: Specialty Granules Investments LLC
    Inventors: David D. Kragten, Daniel E. Rardon
  • Publication number: 20210270036
    Abstract: This invention relates to coated roofing granules, roofing materials made therefrom, and methods of preparing such coated roofing granules. By coating roofing granules with an aqueous coating that includes water, a silicon-containing oligomer or polymer, and an acrylic resin, coated roofing granules can be prepared that exhibit reduced staining as compared to traditional roofing granules that are treated with petroleum oil.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 2, 2021
    Inventors: David D. Kragten, Daniel E. Rardon
  • Patent number: 9266115
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 23, 2016
    Assignee: UNIMIN CORPORATION
    Inventors: David D Kragten, Christy Karr, Scott Van Remortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Publication number: 20140306038
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: David D, Kragten, Christy Karr, Scott Van Remortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Patent number: 8795427
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: August 5, 2014
    Assignee: Unimin Corporation
    Inventors: David D. Kragten, Christy Karr, Scott Van Remortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Publication number: 20120171491
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 5, 2012
    Applicant: UNIMIN CORPORATION
    Inventors: David D. Kragten, Christy Karr, JR., Scott VanRemortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Patent number: 8182601
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: May 22, 2012
    Assignee: Unimin Corporation
    Inventors: David D. Kragten, Christy Karr, Jr., Scott VanRemortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Patent number: 7785555
    Abstract: Methods of converting olivine to lizardite without formation of chrysotile or brucite are disclosed. The methods comprise heating a mixture of olivine, silica, water, and a caustic agent. The addition of silica allows for complete conversion of the olivine to lizardite through a more thermodynamically favorable reaction. The olivine and silica are preferably of small particle size to increase reactivity.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: August 31, 2010
    Assignee: Unimin Corporation
    Inventors: David D. Kragten, Chris Capobianco
  • Publication number: 20090260541
    Abstract: An ultra-fine powder formed from a naturally occurring mineral or rock material and having a controlled or “engineered” particle size distribution (PSD) to match the infrared spectra with a maximum particle size in the range of 14-17 microns measured as either D99, or preferably D95, and a minimum particle size D5 in the range of 4-7 microns. Preferably the maximum particle size is about 15 microns, the minimum particle size is about 5 microns and the D50 particle size is about 8-10 microns with the moisture content of the particle size “engineered” powder being less than about 0.20 percent by weight and preferably about 0.05 to 0.08 percent by weight of the powder. This specially “engineered” ultra-fine powder is used to reduce the thermicity of thermal film to a value less than about 20%.
    Type: Application
    Filed: September 25, 2008
    Publication date: October 22, 2009
    Inventors: David D. Kragten, Christy Karr, JR., Scott VanRemortel, Robert Ratcliff, Ibezim Anazia, Louis M. Schlesinger
  • Patent number: 7416714
    Abstract: The invention is directed to a process and method for forming synthetic hydroxysodalite from nepheline and feldspar and/or nepheline syenite. A caustic material such as a solution of sodium hydroxide is combined with the nepheline and feldspar and/or nepheline syenite to form the synthetic hydroxysodalite.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: August 26, 2008
    Assignee: Unimin Corporation
    Inventor: David D. Kragten