Patents by Inventor Ronald A. Hellekson

Ronald A. Hellekson 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).

  • Laminate manifolds for mesoscale fluidic systems
    Patent number: 10124589
    Abstract: A fluid ejection device may include a laminate fluid manifold comprising plates extending in a plane and stacked in a laminate plate stack. The stack may include a first fluid passage extending parallel to and between plates of the laminate plate stack and a second fluid passage extending parallel to and between plates of the laminate plate stack. The first fluid passage and the second fluid passage overlap when viewed from a direction perpendicular to the plane.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 13, 2018
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alan R. Arthur, Chris Aschoff, Ronald A. Hellekson
  • LAMINATE MANIFOLDS FOR MESOSCALE FLUIDIC SYSTEMS
    Publication number: 20180099502
    Abstract: A fluid ejection device may include a laminate fluid manifold comprising plates extending in a plane and stacked in a laminate plate stack. The stack may include a first fluid passage extending parallel to and between plates of the laminate plate stack and a second fluid passage extending parallel to and between plates of the laminate plate stack. The first fluid passage and the second fluid passage overlap when viewed from a direction perpendicular to the plane.
    Type: Application
    Filed: December 8, 2017
    Publication date: April 12, 2018
    Inventors: Alan R. Arthur, Chris Aschoff, Ronald A. Hellekson
  • Laminate manifolds for mesoscale fluidic systems
    Patent number: 9868284
    Abstract: A fluid ejection device may include a laminate fluid manifold including plates in a laminate plate stack. The stack may include a fluid passage extending to an edge of the laminate plate stack. A die maybe secured across the edge of the laminate plate stack, wherein the die includes opening to receive fluid transmitted through the fluid passage.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: January 16, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan R. Arthur, Chris Aschoff, Ronald A. Hellekson
  • LAMINATE MANIFOLDS FOR MESOSCALE FLUIDIC SYSTEMS
    Publication number: 20170096005
    Abstract: A fluid ejection device may include a laminate fluid manifold including plates in a laminate plate stack. The stack may include a fluid passage extending to an edge of the laminate plate stack. A die maybe secured across the edge of the laminate plate stack, wherein the die includes opening to receive fluid transmitted through the fluid passage.
    Type: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Inventors: Alan R. Arthur, Chris Aschoff, Ronald A. Hellekson
  • Print head die
    Patent number: 8876256
    Abstract: A print head die includes rows of nozzles. In one implementation, an electrical interconnect is electrically connected to the print head die along a major dimension of the die. In another implementation, a cross connect electrically connects a first column of a of nozzles to print a first color to a second column to print a second color. The cross connect connects the first and second columns between first and second ends of the first and second columns.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: November 4, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Peter J. Fricke, Ronald A. Hellekson
  • Print head array testing
    Patent number: 8733885
    Abstract: A method and apparatus test a printed circuit assembly and a print head array with a low-power application to a printed circuit assembly having a power storage component disconnected from a power rail of the printed circuit assembly and test the printed circuit assembly and the print head array with a high-power application to the printed circuit assembly with the printed circuit assembly receiving electrical power from the power storage component.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: May 27, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James M. Gardner, Ronald A. Hellekson, Eric T. Martin, Peter J. Fricke
  • PRINT HEAD DIE
    Publication number: 20130201256
    Abstract: A print head die includes rows of nozzles. In one implementation, an electrical interconnect is electrically connected to the print head die along a major dimension of the die. In another implementation, a cross connect electrically connects a first column of a of nozzles to print a first color to a second column to print a second color. The cross connect connects the first and second columns between first and second ends of the first and second columns.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 8, 2013
    Inventors: Peter J. Fricke, Ronald A. Hellekson
  • Mandrel
    Patent number: 8293455
    Abstract: Pixel wells and a grid of electrical lines including electrical bridges are formed using an ultraviolet transparent mandrel having a three-dimensional surface and an integrated mask.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: October 23, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan R. Arthur, Ronald A Hellekson
  • Pixel well electrodes
    Patent number: 8199305
    Abstract: A pixel well includes first and second electrodes below a floor.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: June 12, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • Bonded structures formed by plasma enhanced bonding
    Patent number: 8174094
    Abstract: An electronic device comprises a substrate comprising a first surface and a second surface, a substrate carrier comprising a first surface and a second surface, and an inorganic material bonding the second surface of the substrate and the second surface of the substrate carrier.
    Type: Grant
    Filed: June 21, 2009
    Date of Patent: May 8, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Barry C. Snyder, Ronald A. Hellekson
  • Pixel well electrode
    Patent number: 7838313
    Abstract: Various apparatus and methods relating to pixel wells and electrodes that are at least partially concurrently formed are disclosed.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: November 23, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • PIXEL WELL ELECTRODES
    Publication number: 20100177272
    Abstract: A pixel well includes first and second electrodes below a floor.
    Type: Application
    Filed: January 4, 2010
    Publication date: July 15, 2010
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • Bonding an interconnect to a circuit device and related devices
    Patent number: 7716823
    Abstract: This disclosure relates to a system and method for bonding an interconnect to a dense circuit device with a mechanically clamping substrate.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: May 18, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Neal Meyer, Ronald Hellekson, Ronnie Yenchik
  • Mandrel
    Publication number: 20100092889
    Abstract: Pixel wells and a grid of electrical lines including electrical bridges are formed using an ultraviolet transparent mandrel having a three-dimensional surface and an integrated mask.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • Pixel well electrodes
    Patent number: 7656493
    Abstract: A multi-level mandrel is used to locate an electrode in a pixel well. A display includes an electrode recessed in a floor of a pixel well.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: February 2, 2010
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • Bonded structures formed by plasma enhanced bonding
    Publication number: 20090256882
    Abstract: An electronic device comprises a substrate comprising a first surface and a second surface, a substrate carrier comprising a first surface and a second surface, and an inorganic material bonding the second surface of the substrate and the second surface of the substrate carrier.
    Type: Application
    Filed: June 21, 2009
    Publication date: October 15, 2009
    Inventors: Chien-Hua Chen, Barry C. Snyder, Ronald A. Hellekson
  • Method for plasma enhanced bonding and bonded structures formed by plasma enhanced bonding
    Patent number: 7563691
    Abstract: An electronic device comprises a substrate comprising a first surface and a second surface, a substrate carrier comprising a first surface and a second surface, and an inorganic material bonding the second surface of the substrate and the second surface of the substrate carrier.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: July 21, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Barry C. Snyder, Ronald A. Hellekson
  • PIXEL WELL ELECTRODE
    Publication number: 20090032816
    Abstract: Various apparatus and methods relating to pixel wells and electrodes that are at least partially concurrently formed are disclosed.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • PIXEL WELL ELECTRODES
    Publication number: 20090032815
    Abstract: A multi-level mandrel is used to locate an electrode in a pixel well. A display includes an electrode recessed in a floor of a pixel well.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Alan R. Arthur, Ronald A. Hellekson
  • DISPLAY APPARATUS WITH RESISTOR MULTIPLEXER
    Publication number: 20090027303
    Abstract: Embodiments 1of an apparatus with first and second display panels and a resistor multiplexer are disclosed.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Inventors: Alan R. Arthur, Peter J. Fricke, Ronald A. Hellekson