Patents by Inventor Gregory P. Madison

Gregory P. Madison 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).

  • Portable computer charging system and storage cart
    Patent number: 6008621
    Abstract: The present invention provides, for use with a portable computer having a battery coupled to an electrical connector that is connectable to a charging cable, a battery charging system, comprising: (a) a cabinet having a power distribution compartment, a storage compartment, and a cable raceway connecting the power distribution and storage compartments; (b) a storage bay located within the storage compartment adapted to receive a portable computer therein; (c) an electrical power distribution system located within the power distribution compartment and electrically connectable to the charging cable; and (d) a cable grommet located adjacent the storage bay and configured to receive and hold the charging cable in a relatively fixed position with respect to the storage bay.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: December 28, 1999
    Assignee: Electronic Classroom Furniture Systems
    Inventors: Gregory P. Madison, Theodore M. Schneider
  • Computer desk for a flip-up flat screen monitor
    Patent number: D510821
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: October 25, 2005
    Assignee: Electronic Classroom Furniture Systems, LLC
    Inventor: Gregory P. Madison
  • Computer desk for a flip-up flat screen monitor
    Patent number: D521770
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: May 30, 2006
    Assignee: Electronics Classroom Furniture Systems, LC
    Inventor: Gregory P. Madison
  • Computer work desk
    Patent number: D489552
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: May 11, 2004
    Assignee: Electronic Classroom Furniture System, LC
    Inventor: Gregory P. Madison
  • Classroom desk
    Patent number: D652229
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: January 17, 2012
    Assignee: Electronic Classroom Furniture
    Inventor: Gregory P. Madison
  • Classroom desk
    Patent number: D702974
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: April 22, 2014
    Assignee: Electronic Classroom Furniture Systems, LC
    Inventors: Gregory P. Madison, Jeremy F. Marcus