Patents by Inventor Cheong-Sook Yoon

Cheong-Sook Yoon 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).

  • Inner rim of a cap
    Patent number: 4951320
    Abstract: An inner rim of a cap comprising a flat band having a hair contact portion and a forehead portion, a plurality of semi-rigid projecting members disposed on the inside surface of the hair contact portion of the flat band, a forehead supporter disposed on the front forehead portion of the inside surface of the flat band, and a fastener member disposed at both ends of the flat band.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: August 28, 1990
    Inventor: Cheong-Sook Yoon