Patents by Inventor Won-Chan Yoon

Won-Chan Yoon 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).

  • CARBON NANOTUBE MANUFACTURING METHOD AND CARBON NANOTUBE MANUFACTURED USING CARBON DIOXIDE
    Publication number: 20230406708
    Abstract: An embodiment of the disclosure provides a method for manufacturing a carbon nanotube using carbon dioxide and a carbon nanotube manufactured using carbon dioxide. Particularly, an embodiment of the disclosure provides a method for manufacturing a carbon nanotube using carbon dioxide to manufacture a uniform carbon nanotube with a small diameter by using a catalyst, a carbon raw material, and carbon dioxide, with a carbon nanotube manufactured using carbon dioxide.
    Type: Application
    Filed: April 21, 2023
    Publication date: December 21, 2023
    Inventors: Jae Woo LEE, Byung Hoon HWANG, Won Chan YOON
  • Portable terminal and power supply control method
    Patent number: 7915855
    Abstract: A portable terminal and power supply control method are provided. The portable terminal having a power supply control feature includes a main battery for supplying power to the portable terminal, an auxiliary battery for supplying power to the portable terminal independently of the main battery, a switch module for controlling the power supply of the main battery and auxiliary battery, and a power unit controller for controlling on-off settings of the switch module and for disconnecting, when a battery level of the main battery is higher than that of the auxiliary battery, the auxiliary battery from the main battery. The battery levels of the main battery and auxiliary battery are measured and are controlled to prevent charging of the auxiliary battery with a charge current from the main battery through switch settings.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won-Chan Yoon, Sung-Kee Kim, Gu-Sup Kim
  • Portable terminal and power supply control method
    Publication number: 20070285056
    Abstract: A portable terminal and power supply control method are provided. The portable terminal having a power supply control feature includes a main battery for supplying power to the portable terminal, an auxiliary battery for supplying power to the portable terminal independently of the main battery, a switch module for controlling the power supply of the main battery and auxiliary battery, and a power unit controller for controlling on-off settings of the switch module and for disconnecting, when a battery level of the main battery is higher than that of the auxiliary battery, the auxiliary battery from the main battery. The battery levels of the main battery and auxiliary battery are measured and are controlled to prevent charging of the auxiliary battery with a charge current from the main battery through switch settings.
    Type: Application
    Filed: May 3, 2007
    Publication date: December 13, 2007
    Inventors: Won-Chan Yoon, Sung-Kee Kim, Gu-Sup Kim