Patents by Inventor Donald Ulry

Donald Ulry 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).

  • Process for refilling inkjet cartridges
    Publication number: 20070052767
    Abstract: Embodiments provide a method of refilling an inkjet printer cartridge. The method includes providing an inkjet printer cartridge and lowering the pressure surrounding the cartridge below atmospheric level. A first volume of ink is directed into the cartridge at the reduced pressure. The method further includes at least partially raising the pressure surrounding the cartridge and subsequently at least partially lowering the pressure surrounding the cartridge. A second volume of ink is then directed into the cartridge at the second reduced pressure.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 8, 2007
    Inventors: Jason Guhse, Scott Shultz, Brian Fox, Donald Ulry