Patents by Inventor Jae Bok Ryu

Jae Bok Ryu 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).

  • Automatic slope adjusting device
    Patent number: 9839564
    Abstract: An automatic slope adjusting device is provided herein. The automatic slope adjusting device may include a slope type footrest unit configured to form a sloped passage; and a driving unit configured to adjust an inclination angle of the slope type footrest unit, and a length of the slot type footrest unit in a forward-backward direction thereof.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: December 12, 2017
    Assignee: KOREA AIRPORTS CORPORATION
    Inventors: Jae Bok Ryu, Sung Il Kim, Sang Ju Roh
  • Automatic Slope Adjusting Device
    Publication number: 20160193093
    Abstract: An automatic slope adjusting device is provided herein. The automatic slope adjusting device may include a slope type footrest unit configured to form a sloped passage; and a driving unit configured to adjust an inclination angle of the slope type footrest unit, and a length of the slot type footrest unit in a forward-backward direction thereof.
    Type: Application
    Filed: December 30, 2015
    Publication date: July 7, 2016
    Inventors: Jae Bok Ryu, Sung II Kim, Sang Ju Roh