Patents by Inventor Kyungju Nam

Kyungju Nam 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: 11919080
    Abstract: The successful fabrication of alloy foam (or porous alloy) is very rare, despite their potentially better properties and wider applicability than pure metallic foams. The processing of three-dimensional copper-nickel alloy foams is achieved through a strategic solid-solution alloying method based on oxide powder reduction or sintering processes, or both. Solid-solution alloy foams with five different compositions are successfully created, resulting in open-pore structures with varied porosity. The corrosion resistance of the synthesized copper-nickel alloy foams is superior to those of the pure copper and nickel foams.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: March 5, 2024
    Assignee: CellMo Materials Innovation, Inc.
    Inventors: Kicheol Hong, Hyeji Park, Sukyung Lee, Youngseok Song, Gigap Han, Kyungju Nam, Heeman Choe
  • Publication number: 20220405563
    Abstract: A method for predicting a molecular structure includes: preparing a learning data set including first learning data including an eigenvector value and a quantum mechanics calculation value for a monoatomic and molecular structural model, a bulk structural model, a slab structural model, and a nanoparticle structural model of a material including a plurality of elements; learning an artificial neural network using the learning data set to obtain a potential value; and predicting a molecular structure of another material by using the potential value.
    Type: Application
    Filed: June 1, 2022
    Publication date: December 22, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, YONSEI UNIVERSITY, UNIVERSITY - INDUSTRY FOUNDATION (UIF)
    Inventors: Seunghyo Noh, Kyungju Nam, Byungchan Han
  • Publication number: 20210370392
    Abstract: The successful fabrication of alloy foam (or porous alloy) is very rare, despite their potentially better properties and wider applicability than pure metallic foams. The processing of three-dimensional copper-nickel alloy foams is achieved through a strategic solid-solution alloying method based on oxide powder reduction or sintering processes, or both. Solid-solution alloy foams with five different compositions are successfully created, resulting in open-pore structures with varied porosity. The corrosion resistance of the synthesized copper-nickel alloy foams is superior to those of the pure copper and nickel foams.
    Type: Application
    Filed: March 11, 2019
    Publication date: December 2, 2021
    Inventors: Kicheol Hong, Hyeji Park, Sukyung Lee, Youngseok Song, Gigap Han, Kyungju Nam, Jeno Gubicza, Péter Jenei, Csilla Wiener, Heeman Choe
  • Publication number: 20200239312
    Abstract: Porous aluminum nitride (AlN) provides a greater surface area and higher permeability, which is especially desirable for advanced functional application. Porous or bulk aluminum nitride is very difficult to manufacture due mainly to its high melting point (e.g., 2200 degrees Celsius). A new processing method synthesizes porous aluminum nitride through a complete transformation from porous aluminum using a remarkably low nitriding or sintering temperature. The manufactured porous aluminum nitride foam can be used for such applications as filters, separators, heat sinks, ballistic armor, electronic packaging, light- and field-emission devices, and highly wear-resistant composites when infiltrated with metal such as aluminum, titanium, or copper.
    Type: Application
    Filed: October 2, 2018
    Publication date: July 30, 2020
    Inventors: Kyungju Nam, Heeman Choe