Patents by Inventor Woon Y. Joo

Woon Y. Joo 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).

  • Coin treatment apparatus
    Patent number: 5538469
    Abstract: A coin treatment apparatus is disclosed that includes structure for selecting the inserted coins based upon their size, in accordance with their specific currency units, and transferring the coins to a receiving space. Once in the receiving space, coins of the correct currency unit are moved to their respective receiving containers within a receiving box. Coins that are not of the correct currency unit are transferred to a separate receiving space and discharged from the apparatus.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: July 23, 1996
    Assignee: Korea Telecommunication Authority
    Inventors: Soon H. Kwon, Eun H. Kim, Byung W. Jin, Woon Y. Joo