Patents by Inventor Niels B. Pedersen

Niels B. Pedersen 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).

  • Printer
    Patent number: 5798781
    Abstract: A continuous ink refill system for ink-jet printers, of the kind employing a disposable ink cartridge, wherein an aqueous suspension of a pigmented ink is continually circulated through the cartridge by means of a pressure pump, with unused ink being returned from the cartridge to an ink reservoir.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: August 25, 1998
    Inventors: Niels B. Pedersen, Steen B. Mikkelsen, Eva M. Wallstrom