Patents by Inventor Derrick Wayne Roberts

Derrick Wayne Roberts 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).

  • Patent number: 7537192
    Abstract: A multi-purpose portfolio formed from a sheet of rigid card with transverse hinged lines dividing the card into a number of panels that may be completely folded into its closed or carrying position, partially unfolded to access pen, pad, and the likes, and fully erectable for use as a podium, book holder or display stand. The major front panel and major back panel are secured together at their upper edges by a hinge line, and each has a narrow panel hinged along its bottom edge. In its fully erect position, the major front panel is inclined to hold books. Each panel has a hinge line along its bottom edge that secures a narrow panel.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: May 26, 2009
    Inventors: Abdel Khalid Al-Haleem, Derrick Wayne Roberts