Patents by Inventor Wonho Choe

Wonho Choe 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).

  • FLEXIBLE PLASMA GENERATOR AND METHOD FOR MANUFACTURING FLEXIBLE PLASMA GENERATOR
    Publication number: 20260122750
    Abstract: A flexible plasma generator is disclosed. The flexible plasma generator according to one aspect of the present disclosure includes: a dielectric substrate capable of elastic deformation; a first electrode formed on one surface of the dielectric substrate and being deformable and restorable in accordance with deformation of the dielectric substrate; and a second electrode formed on an opposite surface of the dielectric substrate and being deformable and restorable in accordance with deformation of the dielectric substrate. Plasma may be generated when an alternating current (AC) power source or a pulsed power source is applied to the first electrode and the second electrode.
    Type: Application
    Filed: August 21, 2025
    Publication date: April 30, 2026
    Inventors: Hyoungsoo KIM, Wonho CHOE, Jeongsu PYEON, Seong-Cheol Huh
  • High efficiency hollow cathode and cathode system applying same
    Patent number: 10032594
    Abstract: The present invention relates to a high efficiency hollow cathode and a cathode system applying the same, and comprises: a tube comprising at least two refractory metal parts; a gas providing unit and a gas outlet which are respectively formed at the distal ends of the tube; and an insert mounted inside the tube. According to the present invention, since the present invention constitutes a hollow cathode using more than two substances, the present invention can not only enhance thermal stability, lifespan and efficiency, but also can reduce costs accordingly.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: July 24, 2018
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Wonho Choe, Youbong Lim, Holak Kim, Jooyoung Park, Jongho Seon
  • High Efficiency Hollow Cathode and Cathode System Applying Same
    Publication number: 20160365215
    Abstract: The present invention relates to a high efficiency hollow cathode and a cathode system applying the same, and comprises: a tube comprising at least two refractory metal parts; a gas providing unit and a gas outlet which are respectively formed at the distal ends of the tube; and an insert mounted inside the tube. According to the present invention, since the present invention constitutes a hollow cathode using more than two substances, the present invention can not only enhance thermal stability, lifespan and efficiency, but also can reduce costs accordingly.
    Type: Application
    Filed: February 23, 2015
    Publication date: December 15, 2016
    Inventors: Wonho Choe, Youbong Lim, Holak Kim, Jooyoung Park, Jongho Seon