Patents by Inventor Dong-Won Yun

Dong-Won Yun 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).

  • DOUBLE-FREQUENCY POWER-DRIVEN INDUCTIVELY COUPLED PLASMA TORCH, AND APPARATUS FOR GENERATING NANOPARTICLE USING SAME
    Publication number: 20180192504
    Abstract: A dual frequency power-driven inductively coupled plasma torch according to an exemplary embodiment of the present invention includes: a hollow confinement tube provided with a space in which thermal plasma is formed; an induction coil that surrounds the confinement tube; and a power supply source that supplies power to the induction coil, wherein the power supply source may supply at least two powers having different frequencies to the induction coil.
    Type: Application
    Filed: June 23, 2016
    Publication date: July 5, 2018
    Applicants: Korea Institute of Machinery & Materials, Industrial Cooperation Foundation of Chonbuk National University
    Inventors: Hee-Chang PARK, Dong-Won YUN, Jun-Ho SEO, Junseok NAM, Mi-Yeon LEE, Jeong-Soo KIM
  • Magnetic bearing structure and turbo machine having the same
    Patent number: 9041266
    Abstract: Disclosed is a magnetic bearing structure including a permanent magnet, levitating a rotation body without a bias current, and easily magnetizing the permanent magnet. The magnetic bearing structure includes a ring-shaped permanent magnet provided on a side of a rotation shaft and magnetized in a direction parallel with a shaft direction of the rotation shaft, a coil installed on a side of the permanent magnet, and a conductor installed on an external side of the coil and used to form a magnetic field path. According to the configuration, when an additional bias current is not supplied to the coil installed in the magnetic bearing, a rotation body levitates according to the magnetic field caused by the permanent magnet, and a magnetized direction of the permanent magnet is in parallel with a shaft direction of the rotation shaft thereby allowing easy magnetization and increasing productivity of the magnetic bearing.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: May 26, 2015
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Cheol Hoon Park, Sang-Kyu Choi, Sang Yong Ham, Dong-Won Yun
  • MAGNETIC BEARING STRUCTURE AND TURBO MACHINE HAVING THE SAME
    Publication number: 20130009501
    Abstract: Disclosed is a magnetic bearing structure including a permanent magnet, levitating a rotation body without a bias current, and easily magnetizing the permanent magnet. The magnetic bearing structure includes a ring-shaped permanent magnet provided on a side of a rotation shaft and magnetized in a direction parallel with a shaft direction of the rotation shaft, a coil installed on a side of the permanent magnet, and a conductor installed on an external side of the coil and used to form a magnetic field path. According to the configuration, when an additional bias current is not supplied to the coil installed in the magnetic bearing, a rotation body levitates according to the magnetic field caused by the permanent magnet, and a magnetized direction of the permanent magnet is in parallel with a shaft direction of the rotation shaft thereby allowing easy magnetization and increasing productivity of the magnetic bearing.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 10, 2013
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Cheol Hoon Park, Sang-Kyu Chol, Sang Yong Ham, Dong-Won Yun