Patents by Inventor Hsuan-Cheng Lee

Hsuan-Cheng Lee 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).

  • Projector and air filtration device thereof
    Patent number: 7320524
    Abstract: An air filtration device for projector includes a holder, a filter, and a rack. The rack is movably disposed in the holder for supporting the filter. When the rack moves to a first position, the rack is received within the holder. When the rack moves from the first position to a second position, the filter is released from the rack for replacement.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: January 22, 2008
    Assignee: Benq Corporation
    Inventors: Hsuan-Cheng Lee, Chang-Chien Li
  • Projector and air filtration device thereof
    Publication number: 20050254021
    Abstract: An air filtration device for projector includes a holder, a filter, and a rack. The rack is movably disposed in the holder for supporting the filter. When the rack moves to a first position, the rack is received within the holder. When the rack moves from the first position to a second position, the filter is released from the rack for replacement.
    Type: Application
    Filed: May 10, 2005
    Publication date: November 17, 2005
    Inventors: Hsuan-Cheng Lee, Chang-Chien Li