Patents by Inventor Paul Robert Eberhardt

Paul Robert Eberhardt 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).

  • Microwave applicator for drying sheet material
    Patent number: 6444964
    Abstract: A microwave applicator suitable for drying sheet material is configured as a dual slot antenna, with one portion of the slot coupled to a wave launching cavity, and the other portion of the slot coupled to an impedance matching cavity.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: September 3, 2002
    Assignee: Encad, Inc.
    Inventors: Bernard John Eastlund, Donald Emmett Spann, Paul Robert Eberhardt, Minh Chi Duong
  • Microwave energy ink drying system
    Patent number: 6425663
    Abstract: A microwave ink drying apparatus for an ink jet printer includes a microwave applicator. The applicator may be attached to a movable print carriage. The applicator may further comprise a slot antenna. The slot antenna may be formed as a dual slot, with one portion of the slot coupled to a wave launching cavity, and the other portion of the slot coupled to an impedance matching cavity.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: July 30, 2002
    Assignee: Encad, Inc.
    Inventors: Bernard John Eastlund, Donald Emmett Spann, Andrew Hugh Bushnell, Paul Robert Eberhardt, Peter James Fellingham