Patents by Inventor Shi-Hoon Choi

Shi-Hoon Choi 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).

  • Method of repeatedly processing metal
    Patent number: 11478841
    Abstract: A method of processing hexahedral metal includes an X-axis edge forging step to press two X-axis edges on opposite sides to each other from a center of the hexahedral metal among edges formed in an X-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal, a Y-axis edge forging step to press two Y-axis edges on opposite sides to each other from the center of the hexahedral metal among edges formed in a Y-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal, and a Z-axis edge forging step to press two Z-axis edges on opposite sides to each other from the center of the hexahedral metal among edges formed in a Z-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: October 25, 2022
    Assignees: AGENCY FOR DEFENSE DEVELOPMENT, GANGNEUNG-WONJU NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION GROUP
    Inventors: Seong Lee, Hyo Tae Jeong, Sang Chul Kwon, Sun Tae Kim, Da Vin Kim, Shi Hoon Choi
  • METHOD OF REPEATEDLY PROCESSING METAL
    Publication number: 20220048094
    Abstract: A method of processing hexahedral metal includes an X-axis edge forging step to press two X-axis edges on opposite sides to each other from a center of the hexahedral metal among edges formed in an X-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal, a Y-axis edge forging step to press two Y-axis edges on opposite sides to each other from the center of the hexahedral metal among edges formed in a Y-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal, and a Z-axis edge forging step to press two Z-axis edges on opposite sides to each other from the center of the hexahedral metal among edges formed in a Z-axis direction, process the hexahedral metal into hexagonal prismatic metal, and restore the hexagonal prismatic metal to hexahedral metal.
    Type: Application
    Filed: September 23, 2020
    Publication date: February 17, 2022
    Applicants: AGENCY FOR DEFENSE DEVELOPMENT, GANGNEUNG-WONJU NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION GROUP
    Inventors: Seong Lee, Hyo Tae Jeong, Sang Chul Kwon, Sun Tae Kim, Da Vin Kim, Shi Hoon Choi
  • High Strength Cold Rolled Steel Sheet Having Excellent Shape Freezability, and Method for Manufacturing the Same
    Publication number: 20070289679
    Abstract: A high-strength isotropic cold-rolled steel sheet having excellent shape-fixability, and a method for manufacturing the same are disclosed. The steel sheet is made using a low-carbon steel comprising a little amounts of Ti to have an r of 1.3 or less, r approaching 1, and a low in-plane anisotropy index (Dr) of 0.15 or less, ensuring excellent shape-fixability so as to be suitable for automotive outer panels which are essentially subjected to deformation in a stretching mode.
    Type: Application
    Filed: September 30, 2005
    Publication date: December 20, 2007
    Applicant: POSCO
    Inventors: Shi-Hoon Choi, Chin-Chul Kim, Kwang-Geun Chin