Patents by Inventor Boyce S. Chang

Boyce S. Chang 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).

  • Patent number: 11938535
    Abstract: Textured particles and methods of making the same. A textured particle includes an inner core and a spherical solid outer shell including an outer surface. The inner core is inside the outer shell. The outer surface includes a first tier texture including a first metal, wherein the first metal is greater than 50 atomic % of a total atomic content of all metals in the first tier texture; a second tier texture including the second metal, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture; and a third tier texture including the third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture. The first metal, second metal, and third metals are different metals.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: March 26, 2024
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Martin Thuo, Boyce S. Chang, Andrew Martin, Winnie M. Kiarie
  • Publication number: 20230287200
    Abstract: One or more techniques and/or systems are disclosed for a dry-type lubricant for use in a dry product hopper to help improve dry product flow and to improve anti-jamming properties of the dry product. The example lubricant can comprise a hydrophilic fiber, such as cellulose, having a width to length aspect ratio that provides a thin fiber. A plurality of hydrophobic particles are deposited on the surface of the fiber, resulting in a fiber surface exhibiting amphiphobic properties. Further, the fiber can operably absorb water, and then releases the absorbed water to the surface of the fiber under mechanical stress, such as when mixed with a product in a hopper. This can result in the water being disposed on the surface of the fiber, to provide lubrication to a product in a hopper to improve flow and anti-jamming characteristics of the product in the hopper.
    Type: Application
    Filed: March 28, 2023
    Publication date: September 14, 2023
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Martin Thuo, Paul Ramon Gregory, Boyce S. Chang, Chuanshen Du
  • Patent number: 11613630
    Abstract: One or more techniques and/or systems are disclosed for a dry-type lubricant for use in a dry product hopper to help improve dry product flow and to improve anti jamming properties of the dry product. The example lubricant can comprise a hydrophilic fiber, such as cellulose, having a width to length aspect ratio that provides a thin fiber. A plurality of hydrophobic particles are deposited on the surface of the fiber, resulting in a fiber surface exhibiting amphiphobic properties. Further, the fiber can operably absorb water, and then releases the absorbed water to the surface of the fiber under mechanical stress, such as when mixed with a product in a hopper. This can result in the water being disposed on the surface of the fiber, to provide lubrication to a product in a hopper to improve flow and anti jamming characteristics of the product in the hopper.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: March 28, 2023
    Assignee: Iowa State University Research Foundation
    Inventors: Martin Thuo, Paul Ramon Gregory, Boyce S. Chang, Chuanshen Du
  • Publication number: 20220177676
    Abstract: One or more techniques and/or systems are disclosed for a dry-type lubricant for use in a dry product hopper to help improve dry product flow and to improve anti jamming properties of the dry product. The example lubricant can comprise a hydrophilic fiber, such as cellulose, having a width to length aspect ratio that provides a thin fiber. A plurality of hydrophobic particles are deposited on the surface of the fiber, resulting in a fiber surface exhibiting amphiphobic properties. Further, the fiber can operably absorb water, and then releases the absorbed water to the surface of the fiber under mechanical stress, such as when mixed with a product in a hopper. This can result in the water being disposed on the surface of the fiber, to provide lubrication to a product in a hopper to improve flow and anti jamming characteristics of the product in the hopper.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 9, 2022
    Applicant: Iowa State University Research Foundation
    Inventors: Martin Thuo, Paul Ramon Gregory, Boyce S. Chang, Chuanshen Du
  • Publication number: 20220152698
    Abstract: Textured particles and methods of making the same. A textured particle includes an inner core and a spherical solid outer shell including an outer surface. The inner core is inside the outer shell. The outer surface includes a first tier texture including a first metal, wherein the first metal is greater than 50 atomic % of a total atomic content of all metals in the first tier texture; a second tier texture including the second metal, wherein the second metal is greater than 50 atomic % of a total atomic content of all metals in the second tier texture; and a third tier texture including the third metal, wherein the third metal is greater than 50 atomic % of a total atomic content of all metals in the third tier texture. The first metal, second metal, and third metals are different metals.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 19, 2022
    Inventors: Martin Thuo, Boyce S. Chang, Andrew Martin, Winnie M. Kiarie
  • Patent number: 11241678
    Abstract: A method for making organo-metal material involves providing a metal ion source in a medium that removes metal ions from the source and forms 1D metal-containing coordination polymers that self-assemble and precipitate as at least one of a 2D and 3D coordination polymer material that can be thermally treated to produce a porous metal oxide material.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 8, 2022
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Martin M. Thuo, Boyce S. Chang, Jiahao Chen, Aaron J. Rossini
  • Patent number: 10759127
    Abstract: A composite material is provided including a polymer matrix and undercooled liquid metallic core-shell particles disposed in the matrix, wherein the particles each have an outer shell and a liquid metallic material as a core contained within the outer shell. The outer shell is frangible such that the liquid metallic material is released from at least some of the particles in response to a mechanical load applied to the composite and solidifies in-situ in the polymer matrix. As a result, the composite material can be self-strengthening and self-healing and can be reconfigurable in shape at ambient temperature.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 1, 2020
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Martin Thuo, Boyce S. Chang
  • Publication number: 20180311655
    Abstract: A method for making organo-metal material involves providing a metal ion source in a medium that removes metal ions from the source and forms 1D metal-containing coordination polymers that self-assemble and precipitate as at least one of a 2D and 3D coordination polymer material that can be thermally treated to produce a porous metal oxide material.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Inventors: Martin M. Thuo, Boyce S. Chang, Jiahao Chen, Aaron J. Rossini
  • Publication number: 20180258235
    Abstract: A composite material is provided including an elastomeric polymer matrix and undercooled liquid metallic core-shell particles disposed in the matrix, wherein the particles each have an outer shell and a liquid metallic material as a core contained within the outer shell. The outer shell is frangible such that the liquid metallic material is released from at least some of the particles in response to a mechanical load applied to the composite and solidifies in-situ in the polymer matrix. As a result, the composite material can be self-strengthening and self-healing and can be reconfigurable in shape at ambient temperature.
    Type: Application
    Filed: March 7, 2018
    Publication date: September 13, 2018
    Inventors: Martin M. Thuo, Boyce S. Chang
  • Publication number: 20180257322
    Abstract: A composite material is provided including a polymer matrix and undercooled liquid metallic core-shell particles disposed in the matrix, wherein the particles each have an outer shell and a liquid metallic material as a core contained within the outer shell. The outer shell is frangible such that the liquid metallic material is released from at least some of the particles in response to a mechanical load applied to the composite and solidifies in-situ in the polymer matrix. As a result, the composite material can be self-strengthening and self-healing and can be reconfigurable in shape at ambient temperature.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 13, 2018
    Inventors: Martin M. Thuo, Boyce S. Chang