Patents by Inventor Jong-Ju Rha

Jong-Ju Rha 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).

  • Patent number: 6441554
    Abstract: Disclosed is an apparatus for generating low-temp plasma at atmospheric pressure, comprising: a couple of electrodes facing each other at a distance, one of them being connected to a power supply, the other being grounded; a couple of dielectrics with a thickness of 25 &mgr;m-10 mm, positioned on the facing surfaces of the electrodes in such a way as to face each other, one of them having at least one discharge gap therein; and a conductor electrode having at least one tip positioned within the discharge gap, in which an electric field is applied at an intensity of 1-100 KV/cm through the power supply across the electrodes by use of a pulse direct current or an alternating current in a frequency bandwidth of 50 Hz-10 GHz while a reaction gas is fed between the electrodes, so as to induce a hollow cathode discharge, a capillary discharge or the high accumulation of charges from the discharge gap.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: August 27, 2002
    Assignee: SE Plasma Inc.
    Inventors: Kee-Seok Nam, Sang-Ro Lee, Jong-Ju Rha, Koo-Hyun Lee, Jong-Kuk Kim
  • Publication number: 20020063537
    Abstract: Disclosed is an apparatus for generating low-temp plasma at atmospheric pressure, comprising: a couple of electrodes facing each other at a distance, one of them being connected to a power supply, the other being grounded; a couple of dielectrics with a thickness of 25 &mgr;m-10 mm, positioned on the facing surfaces of the electrodes in such a way as to face each other, one of them having at least one discharge gap therein; and a conductor electrode having at least one tip positioned within the discharge gap, in which an electric field is applied at an intensity of 1-100 KV/cm through the power supply across the electrodes by use of a pulse direct current or an alternating current in a frequency bandwidth of 50 Hz-10 GHz while a reaction gas is fed between the electrodes, so as to induce a hollow cathode discharge, a capillary discharge or the high accumulation of charges from the discharge gap.
    Type: Application
    Filed: May 14, 2001
    Publication date: May 30, 2002
    Applicant: Korea Institute Of Machinery & Materials
    Inventors: Kee-Seok Nam, Sang-Ro Lee, Jong-Ju Rha, Koo-Hyun Lee, Jong-Kuk Kim