Patents Represented by Attorney, Agent or Law Firm Todd Deveau Charles Vorndran Troutman Sanders LLP
  • Electronic whiteboard system eraser
    Patent number: 6445384
    Abstract: An eraser for use on an electronic whiteboard with a protrusion area on the erasing surface forming a convex area on the erasing surface for establishing a positive point of contact with the whiteboard; an electronic whiteboard system including such an eraser, a controller for storing data relating to information written on and erased from the whiteboard data, and a filter for preventing the storage of digital data relating to contacts with the whiteboard not attributable to normal writing or erasing actions.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: September 3, 2002
    Assignee: Greensteel, Inc.
    Inventors: Stephen Atwood, Bernard Geaghan