Patents by Inventor Ching-Kao Wu

Ching-Kao Wu 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).

  • Patent number: 5172830
    Abstract: A cottonbud dispenser consisting of a base, a plurality of long coiled springs, pushing blocks to push said springs, a position block, a fixing plate, a stop plate and a transparent case body storing cottonbuds, any of said pushing blocks below the base being possible to be pushed to eject a cottonbud in one of the rooms in the base to extend out of said room so as to be picked up by fingers and also possible to be pushed back to its original position by the compressed long spring after said pushing block is released.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: December 22, 1992
    Inventor: Ching-Kao Wu
  • Patent number: 5131536
    Abstract: A cottonbud case having a lid and a case body provided with a plurality of rooms for storing cottonbuds horizontally and middle portions of the rooms being vacant for fingers to insert to put in or pick up cottonbuds so as to keep clean cotton balls at both ends of sticks.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: July 21, 1992
    Inventor: Ching-Kao Wu