Patents by Inventor Der-Roung Shyu

Der-Roung Shyu 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).

  • Light filter apparatus of an image scanning device
    Patent number: 5526196
    Abstract: A light filter apparatus of an image scanning device is provided. The light filter apparatus is a frame of a spindle-like shape. The frame comprises a connecting sleeve at both ends and a plurality of axial-symmetrical sub-frames each of which accommodates a light filter film. The sub-frame has two inwardly converging ends connected with the connecting sleeves respectively. The sub-frame has a slot for receiving the light filter film.
    Type: Grant
    Filed: August 5, 1994
    Date of Patent: June 11, 1996
    Assignee: Acer Peripherals, Inc.
    Inventors: Yu-Yang Lu, Der-Roung Shyu