Patents by Inventor Jai Hwang Joo

Jai Hwang Joo 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).

  • 3-dimensional lattice truss structure composed of helical wires and method for manufacturing the same
    Patent number: 8745958
    Abstract: Disclosed are three-dimensional porous light-weight structures composed of helical wires and the manufacturing method of the same. Continuous helical wire groups in three or six directions having a designated angle (for example, 60 degrees or 90 degrees) with respect to one another in a space cross and are then assembled, and thus new truss-shaped three-dimensional lattice truss structures having high strength and stiffness to weight ratio and a large surface area and method of mass-producing the structures at low costs are provided. The three-dimensional porous light-weight structures are manufactured by a method in which helical wires are three-dimensionally assembled through a continuous process rather than a method in which net-shaped wires are simply woven and stacked, and thus have a configuration similar to the ideal hexahedron truss, Octet truss, or truss in which regular octahedrons and cuboctahedrons are combined, thereby having excellent mechanical properties or thermal or aerodynamic properties.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: June 10, 2014
    Assignee: Industry Foundation of Chonnam National University
    Inventors: Ki Ju Kang, Seung Chul Han, Jai Hwang Joo
  • 3-DIMENSIONAL LATTICE TRUSS STRUCTURE COMPOSED OF HELICAL WIRES AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20120151868
    Abstract: Disclosed are three-dimensional porous light-weight structures composed of helical wires and the manufacturing method of the same. Continuous helical wire groups in three or six directions having a designated angle (for example, 60 degrees or 90 degrees) with respect to one another in a space cross and are then assembled, and thus new truss-shaped three-dimensional lattice truss structures having high strength and stiffness to weight ratio and a large surface area and method of mass-producing the structures at low costs are provided. The three-dimensional porous light-weight structures are manufactured by a method in which helical wires are three-dimensionally assembled through a continuous process rather than a method in which net-shaped wires are simply woven and stacked, and thus have a configuration similar to the ideal hexahedron truss, Octet truss, or truss in which regular octahedrons and cuboctahedrons are combined, thereby having excellent mechanical properties or thermal or aerodynamic properties.
    Type: Application
    Filed: August 25, 2010
    Publication date: June 21, 2012
    Applicant: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Ki Ju Kang, Seung Chul Han, Jai Hwang Joo