Patents by Inventor Dong-Kyu Hwang

Dong-Kyu Hwang 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).

  • VENTILATION SYSTEM
    Publication number: 20120094590
    Abstract: The present invention relates to a ventilation system. According to a ventilation system of an embodiment of the present invention, it is possible to supply constant air flow to each floor or home, regardless of changes in environment outside a building, by connecting a ventilator to a center duct that sucks external air and supplies it to each floor or home, or sucks internal air of each floor of home and discharges it to the outside the building.
    Type: Application
    Filed: February 10, 2010
    Publication date: April 19, 2012
    Inventors: Woo-Ram Lee, Ki-Dong Kim, Chung-Keun Lee, Sung-Won Han, Dong-Kyu Hwang, Kyung-Hwan Kim