Patents by Inventor David E. Sabo

David E. Sabo 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: 9811027
    Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: November 7, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christopher S. Tanner, David E. Sabo, Spencer R. Hanson
  • LIQUID ELECTROPHOTOGRAPHY INK DEVELOPER
    Publication number: 20160216644
    Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).
    Type: Application
    Filed: February 22, 2016
    Publication date: July 28, 2016
    Inventors: Christopher S. Tanner, David E. Sabo, Spencer R. Hanson
  • Liquid electrophotography ink developer
    Patent number: 9291948
    Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).
    Type: Grant
    Filed: April 7, 2012
    Date of Patent: March 22, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christopher S. Tanner, David E. Sabo, Spencer R. Hanson
  • LIQUID ELECTROPHOTOGRAPHY INK DEVELOPER
    Publication number: 20150078785
    Abstract: A liquid electrophotographic ink developer comprises a developer roller (112) rotatable about an axis, first and second electrodes (108, 110) proximate the developer roller (112) and an inlet chamber (100) extending along the axis from a first end adjacent an inlet opening (122) to a second end opposite the first end. A neck (104) forms an uninterrupted ink flow path from the inlet chamber (100) to the developer roller (112).
    Type: Application
    Filed: April 7, 2012
    Publication date: March 19, 2015
    Inventors: Christopher S. Tanner, David E. Sabo, Spencer R. Hanson
  • 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