Patents by Inventor Wen-Shn Ko

Wen-Shn Ko 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).

  • Publication number: 20050081413
    Abstract: A reelable sign device for warnings, information and directions include a reel structure having a reel and a long opening, a soft curtain with sign marks for signaling, and a brace with a plurality of fixtures to uphold the outstretched soft curtain with sign marks. The soft curtain with sign marks is connected to the reel structure and capable of being furled and folded up into the reel structure through the long opening. The sign marks on the signaling side of the soft curtain are a combination of drawings, symbols and characters composed of photo-reflective and photo-luminescent materials. With the reel structure and the soft curtain with sign marks, the reelable sign device can be stored easily and setup promptly. The large reflection and luminance area of the outstretched soft curtain with distinguishably visible sign marks enables the reelable sign device apparent from a long distance.
    Type: Application
    Filed: December 29, 2003
    Publication date: April 21, 2005
    Inventor: Wen-Shn Ko