Patents by Inventor Dave Christofferson

Dave Christofferson 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).

  • Gripper conveyor with preliminary ink jet
    Patent number: 6019047
    Abstract: An apparatus for providing printed products to a gatherer, including a product supplier for feeding printed products, a product separator positioned to receive printed products from the product supplier and to separate the printed products into a separated stream, a printer positioned adjacent to the separated stream and positioned to print on the separated printed products, and a gripper conveyor positioned to receive the separated printed products from the printer and to form a shingled stream.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: February 1, 2000
    Assignee: Quad/Tech, Inc.
    Inventors: Lawrence S. Klaas, Dave Christofferson
  • Gripper conveyor with preliminary ink jet
    Patent number: 5819663
    Abstract: An apparatus for providing printed products to a gatherer, including a product supplier for feeding printed products, a product separator positioned to receive printed products from the product supplier and to separate the printed products into a separated stream, a printer positioned adjacent to the separated stream and positioned to print on the separated printed products, and a gripper conveyor positioned to receive the separated printed products from the printer and to form a shingled stream.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: October 13, 1998
    Assignee: Quad/Tech, Inc.
    Inventors: Lawrence S. Klaas, Dave Christofferson