Patents by Inventor Daniel P. Fradl

Daniel P. Fradl 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).

  • Liquid electrophotography ink developer
    Patent number: 8837990
    Abstract: A developer flows ink from the ink inlet chamber along a first side of a first electrode, through a gap between the first electrode and a developer roller and back to the inlet chamber.
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: September 16, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Eric G. Nelson, David E. Sabo, Evgeny Korol, Daniel P. Fradl
  • LIQUID ELECTROPHOTOGRAPHY INK DEVELOPER
    Publication number: 20130011162
    Abstract: A developer flows ink from the ink inlet chamber along a first side of a first electrode, through a gap between the first electrode and a developer roller and back to the inlet chamber.
    Type: Application
    Filed: April 2, 2010
    Publication date: January 10, 2013
    Applicant: Hewlett-Packard Development Company L.P.
    Inventors: Eric G. Nelson, David E. Sabo, Evgeny Korol, Daniel P. Fradl