Patents by Inventor Keoung-Hwa Lee

Keoung-Hwa 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).

  • Apparatus for producing a composite material
    Patent number: 9700939
    Abstract: The present invention includes a first injection tube for supplying a colloidal medium, a storage part connected to the first injection tube for receiving the colloidal medium through the first injection tube, a second injection tube connected to the storage part for supplying a colloid, a discharge tube connected to both the storage part and the second injection tube for discharging the colloidal medium coming from the storage part and the colloid coming from the second injection tube, and a free surface inversion part for inverting the free surface of the liquid in the second injection tube so as to mix the colloidal medium and the colloid in the discharge tube.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: July 11, 2017
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Kyong Whoan Lee, Keoung Hwa Lee, Hyun Jong Kim, Sang Mok Lee, Je Sik Shin, Young Cheol Lee
  • STERILIZING APPARATUS AND STERILIZING METHOD USING WET GASEOUS CHLORINE DIOXIDE
    Publication number: 20160206767
    Abstract: The present invention provides a sterilizing apparatus using wet gaseous chlorine dioxide, the sterilizing apparatus comprising: a chamber provided with a sterilization chamber; a gaseous chlorine dioxide generating part for generating wet gaseous chlorine dioxide from stabilized chlorine dioxide; a photoionization detecting part for measuring the concentration of the gaseous chlorine dioxide in the chamber; an electronic control part for controlling a sterilization process; a gaseous chlorine dioxide adsorption removal part for removing gaseous chlorine dioxide remaining in the chamber after the sterilization process has been completed; an operation panel consisting of an input portion for inputting sterilization conditions and a display portion for displaying a sterilization state; and a printer for outputting a sterilization history.
    Type: Application
    Filed: August 7, 2014
    Publication date: July 21, 2016
    Inventors: Kyoung Ho PARK, Kyeong Hwan PARK, Min Gyu HWANG, Keoung Hwa LEE
  • APPARATUS FOR PRODUCING A COMPOSITE MATERIAL
    Publication number: 20150123325
    Abstract: The present invention includes a first injection tube for supplying a colloidal medium, a storage part connected to the first injection tube for receiving the colloidal medium through the first injection tube, a second injection tube connected to the storage part for supplying a colloid, a discharge tube connected to both the storage part and the second injection tube for discharging the colloidal medium coming from the storage part and the colloid coming from the second injection tube, and a free surface inversion part for inverting the free surface of the liquid in the second injection tube so as to mix the colloidal medium and the colloid in the discharge tube.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 7, 2015
    Inventors: Kyong Whoan Lee, Keoung-Hwa Lee, Hyun Jong Kim, Sang Mok Lee, Je Sik Shin, Young Cheol Lee