Patents by Inventor Byeong Jun Cha

Byeong Jun Cha 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).

  • Publication number: 20240331967
    Abstract: A liquid metal ion source device for using bismuth and an alloy of the bismuth is provided. The liquid metal ion source device includes a base formed of an electrically insulating material, two electrodes connected to the base and configured to supply current, a needle mounted on the base and configured to pass through the base, a filament including a pair of connection rods connected to the two electrodes, respectively, a pair of support rods formed to be extended from the pair of connection rods, respectively, and provided in a direction away from the base and towards the needle, and a filament head connecting the pair of support rods to one another and having a shape curved toward the base, and a reservoir configured to accommodate at least a portion of the filament head inside the reservoir and store a liquid metal.
    Type: Application
    Filed: January 8, 2024
    Publication date: October 3, 2024
    Applicant: KOREA BASIC SCIENCE INSTITUTE
    Inventors: Myoung Choul Choi, Woo Jun Byeon, Byeong Jun Cha