Patents by Inventor Yong-Kyong Lee

Yong-Kyong 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).

  • LIGHTWEIGHT HELMET SHELL AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20100088807
    Abstract: There is provided a lightweight helmet shell including an inner shell formed from a porous expanded plastic layer, and an outer shell, in which the outer shell is formed from a compressed fiber sheet having an apparent density of 0.15 to 0.7 g/cc and an impact absorbability of less than 300 G. The lightweight helmet shell according to the invention has excellent breathability, is lightweight, and has improved impact absorbability.
    Type: Application
    Filed: October 15, 2009
    Publication date: April 15, 2010
    Applicants: NANOTECH CERAMICS CO., LTD., SOYO ENTERPRISE INC.
    Inventors: Sang-Ok JEONG, Wan-Ouk Kim, Yong-Kyong Lee