Patents by Inventor Woo Seog RYU

Woo Seog 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).

  • Exit light and emergency light which have function to indicate residual charge of battery
    Patent number: 8558458
    Abstract: An exit light and an emergency light which have a function to indicate a residual charge of a storage battery are provided for users to efficiently check the residual charge of the battery by using a bar graph indicating unit formed on a front portion.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: October 15, 2013
    Assignee: Korea Atomic Energy Research Institute
    Inventors: SangMin Bae, Woo Seog Ryu, TaeKook Kim, YoungGerl Ryu
  • EXIT LIGHT AND EMERGENCY LIGHT WHICH HAVE FUNCTION TO INDICATE RESIDUAL CHARGE OF BATTERY
    Publication number: 20110221347
    Abstract: An exit light and an emergency light which have a function to indicate a residual charge of a storage battery are provided for users to efficiently check the residual charge of the battery by using a bar graph indicating unit formed on a front portion.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 15, 2011
    Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE
    Inventors: SangMin BAE, Woo Seog RYU, TaeKook KIM, YoungGerl RYU