Patents by Inventor Heon-Ju Lee

Heon-Ju Lee 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: 8747502
    Abstract: A particulate matter reduction apparatus for a diesel engine, which can reduce particulate matter in a convenient manner with a relatively simple structure, while preventing the shortening of the lifespan of a filter and improving particulate matter burning efficiency, is provided. The particulate matter reduction apparatus includes a housing configured to be placed on a flow path into which exhaust gas is discharged from the diesel engine, a filter configured to collect particulate matter contained in the exhaust gas that flows in the housing, electrodes configured to transmit electronic signals to the filter, and a control unit configured to control the electric signals provided to the electrodes. The particulate matter reduction apparatus is advantageous in that particulate matter is burnt and removed by directly heating the filter. In addition, the apparatus is more convenient, compared to a system which requires a filter to be separated and cleaned.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: June 10, 2014
    Assignee: Industry-Academic Cooperation Foundation, Jeju National University
    Inventors: Heon-Ju Lee, Vadim Yurevich Plaksin
  • Publication number: 20130014494
    Abstract: A filter assembly includes: a cylindrical diesel particulate filter disposed on a flow passage through which an exhaust gas from an engine is discharged, the filter having gas flow passages formed and disposed therein by dividing an inner space into a lattice form; and an electrode unit disposed at at least one of both side surfaces of the filter, the electrode unit receiving electric power to heat the filter. A plurality of regions resulting from division into a lattice form in the filter have alternately disposed open and closed sections. A device for reducing an exhaust gas including the above filter assembly is also provided.
    Type: Application
    Filed: November 10, 2010
    Publication date: January 17, 2013
    Applicant: JEJU NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventor: Heon Ju Lee
  • Patent number: 8129654
    Abstract: The present invention relates to a plasmatron structure for heating working gas in a DC arc discharge at the atmospheric or lowered pressures and can be used for different electronic, engineering, or vehicle-building industries and for medicine. An object of the invention is to provide improved effectiveness of process gas activation and increased completeness of plasma-chemical reactions. These objects are achieved in a DC arc plasmatron comprising a rod cathode, a nozzle anode having a body member and a through axial orifice, a power supply unit connected to both electrodes, and a gas system for feeding plasma-forming gas into inter-electrode space and supplying suitably selected technologic gas or gas mixture into the anode orifice through an internal opening communicating with said orifice and positioned between its inlet and outlet parts.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: March 6, 2012
    Assignee: Cheju National University Industry Academic Cooperation Foundation
    Inventors: Heon-Ju Lee, Yong-Son Mok, Valentin Anatolievich Riaby, Valdim Yu Plaksin
  • Publication number: 20110005205
    Abstract: A particulate matter reduction apparatus for a diesel engine, which can reduce particulate matter in a convenient manner with a relatively simple structure, while preventing the shortening of the lifespan of a filter and improving particulate matter burning efficiency, is provided. The particulate matter reduction apparatus includes a housing configured to be placed on a flow path into which exhaust gas is discharged from the diesel engine, a filter configured to collect particulate matter contained in the exhaust gas that flows in the housing, electrodes configured to transmit electronic signals to the filter, and a control unit configured to control the electric signals provided to the electrodes. The particulate matter reduction apparatus is advantageous in that particulate matter is burnt and removed by directly heating the filter. In addition, the apparatus is more convenient, compared to a system which requires a filter to be separated and cleaned.
    Type: Application
    Filed: February 23, 2009
    Publication date: January 13, 2011
    Applicant: Industry-Academic Cooperation Foundation, Jeju nAT
    Inventors: Heon-Ju Lee, Vadim Yurevich Plaksin
  • Publication number: 20100201271
    Abstract: The present invention concerns a DC arc plasmatron which is a plasma generator at the atmospheric pressure having a structure suitable for improving chemical activity of plasma. The DC arc plasmatron according to the invention comprises a rod cathode 110 connected to a DC power supply 1000, and formed to be positioned close to a nozzle to be a negative; a nozzle anode 120 formed on the nozzle to be a positive, being an opening to inject plasma into a functional gap 150 and having an anode inlet 122, wherein the plasma is created by gas discharge for forming the plasma between the cathode and the anode; a functional anode gap formed on the nozzle to be a positive so that either a function gas or a gas mixture is supplied on some part of the passage of the anode to make it react with the plasma forming gas through the nozzle inlet; and a gas supply unit for supplying a plasma forming gas flowing through the nozzle anode from the side of the rod cathode.
    Type: Application
    Filed: December 26, 2006
    Publication date: August 12, 2010
    Applicant: CHEJU NATIONAL UNIVERSITY INDUSTRY ACADEMIC COOPERATION FOUNDATION
    Inventors: Heon-Ju Lee, Yong-Son Mok, Valentin Anatolievich Riaby, Valdim Yu Plaksin
  • Patent number: 7504764
    Abstract: Provided are an electric power generating apparatus for a movement type equipment and a self-generation system having the same. The electric power generating apparatus for a movement type equipment includes: a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass; and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam. The self-generation system includes: a movement type equipment; and an electric power generating apparatus for a movement type equipment including a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass, and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: March 17, 2009
    Inventors: Young-Soo Chang, Heon-Ju Lee, Yoon-Pyo Lee
  • Publication number: 20080100182
    Abstract: Provided are an electric power generating apparatus for a movement type equipment and a self-generation system having the same. The electric power generating apparatus for a movement type equipment includes: a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass; and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam. The self-generation system includes: a movement type equipment; and an electric power generating apparatus for a movement type equipment including a piezoelectric beam having an end fixed to a movement type equipment and other end with a mass, and a rectifier unit for rectifying and storing electric energy generated due to deformation of the piezoelectric beam.
    Type: Application
    Filed: December 27, 2006
    Publication date: May 1, 2008
    Inventors: Young-Soo CHANG, Heon-Ju LEE, Yoon-Pyo LEE