Patents by Inventor David Keith Jackson

David Keith Jackson 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).

  • Linear light diffusing structure for document scanners
    Patent number: 8322872
    Abstract: A tubular structure with an opening defined thereon and having an inner surface and an outer surface. The tubular structure being substantially circular in shape and is made of a highly thermal conductive material. A plurality of light sources mounted on the inner surface of the tubular structure. The inner surface is coated with a diffused white coating. Light emitted from the plurality of light sources is reflected from the inner surface before exiting the tubular structure from the opening. This structure ensures emitting a uniform diffused light and prevents non-uniform illumination when disposed in an imaging forming device.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: December 4, 2012
    Assignee: Lexmark International, Inc.
    Inventors: Chengwu Cui, David Keith Jackson, Joshua Tyler Strow
  • Linear Light Diffusing Structure for Document Scanners
    Publication number: 20110044036
    Abstract: A tubular structure with an opening defined thereon and having an inner surface and an outer surface. The tubular structure being substantially circular in shape and is made of a highly thermal conductive material. A plurality of light sources mounted on the inner surface of the tubular structure. The inner surface is coated with a diffused white coating. Light emitted from the plurality of light sources is reflected from the inner surface before exiting the tubular structure from the opening. This structure ensures emitting a uniform diffused light and prevents non-uniform illumination when disposed in an imaging forming device.
    Type: Application
    Filed: October 13, 2009
    Publication date: February 24, 2011
    Inventors: Chengwu Cui, David Keith Jackson, Joshua Tyler Strow