Patents by Inventor Christie Dudenhoefer

Christie Dudenhoefer 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).

  • Patent number: 9433939
    Abstract: Various techniques for dispensing liquids are disclosed herein. In one embodiment a dispenser retention apparatus includes a frame. The frame includes a top surface configured to retain a liquid dispensing assembly. The frame also includes a bottom surface opposite the top surface. The bottom surface includes a first channel extending from a first lateral edge of the frame to a droplet passage between the top and bottom surfaces. The first channel is configured to allow a light beam introduced to the frame at the first lateral edge to intersect a droplet in the passage.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: September 6, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christie Dudenhoefer, Jeffrey A. Nielsen, Kenneth Ward, Kevin F. Peters, Joseph W. Dody, Alexander Govyadinov
  • Publication number: 20150336100
    Abstract: A slot extender includes a reservoir. The reservoir includes a reservoir floor defining a drain opening, a continuous reservoir sidewall extending from the reservoir floor, and a concave fillet running along at least a portion where the reservoir sidewall joins the reservoir floor. The concave fillet has a variable radius.
    Type: Application
    Filed: January 8, 2013
    Publication date: November 26, 2015
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis R ESTERBERG, Frank D DERRYBERRY, Richard W SEAVER, Christie DUDENHOEFER
  • Patent number: 8333453
    Abstract: A liquid dispensing device (10) having a drop ejection device (12) including an orifice (18) adapted for ejecting drops (20) therefrom above a particular turn-on-energy, a turn-on-energy detection device (28) positioned to receive turn-on-energy information from said ejected drops as a function of energy applied to the drop ejection device, and a controller (40) that receives the turn-on-energy information and conducts a mathematical operation on the turn-on-energy information to determine a drop volume of the drops ejected.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: December 18, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christie Dudenhoefer, Kenneth Ward, Alexander Govyadinov, David Maxfield
  • Publication number: 20120051984
    Abstract: Various techniques for dispensing liquids are disclosed herein. In one embodiment a dispenser retention apparatus includes a frame. The frame includes a top surface configured to retain a liquid dispensing assembly. The frame also includes a bottom surface opposite the top surface. The bottom surface includes a first channel extending from a first lateral edge of the frame to a droplet passage between the top and bottom surfaces. The first channel is configured to allow a light beam introduced to the frame at the first lateral edge to intersect a droplet in the passage.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 1, 2012
    Inventors: Christie DUDENHOEFER, Jeffrey A. Nielsen, Kenneth Ward, Kevin F. Peters, Joseph W. Dody, Alexander Govyadinov
  • Publication number: 20110121021
    Abstract: A liquid dispensing device (10) having a drop ejection device (12) including an orifice (18) adapted for ejecting drops (20) therefrom above a particular turn-on-energy, a turn-on-energy detection device (28) positioned to receive turn-on-energy information from said ejected drops as a function of energy applied to the drop ejection device, and a controller (40) that receives the turn-on-energy information and conducts a mathematical operation on the turn-on-energy information to determine a drop volume of the drops ejected.
    Type: Application
    Filed: July 30, 2008
    Publication date: May 26, 2011
    Applicant: Hewlett-Packard Development Company L.P.
    Inventors: Christie Dudenhoefer, Kenneth Ward, Alexander Govyadinov, David Maxfield
  • Patent number: 7791728
    Abstract: A microfluidic analysis system for optically analyzing a substance includes a light source having a plurality of selectable single-wavelength light sources, a substance presentation member optically coupled to the light source, and an optical detection system associated with the substance presentation member.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: September 7, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christopher C. Beatty, Philip Harding, Christie Dudenhoefer, Charles Otis
  • Patent number: 7648220
    Abstract: Various apparatus and methods relating to determining a quantity measurement of fluid ejected by drop-on-demand nozzles and modifying the ejection parameters based upon the quantity measurement.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: January 19, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Isaac V. Farr, David R. Otis, Jr., Casey T. Miller, Christie Dudenhoefer, Kenneth J. Ward
  • Publication number: 20090035795
    Abstract: A method of reducing thickness non-uniformity in a microjet-deposited solids layer is disclosed which comprises depositing onto a substrate by microjet deposition a composition containing a liquid vehicle, at least one reagent; and a polyol which is present at a concentration that enhances thickness uniformity of a solids layer, containing the reagent(s), which is formed when the microjet-deposited composition is dried.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Christie DUDENHOEFER, Michael J. DAY, Kenneth WARD, Mary E. AUSTIN
  • Publication number: 20080259107
    Abstract: Various apparatus and methods relating to determining a quantity measurement of fluid ejected by drop-on-demand nozzles and modifying the ejection parameters based upon the quantity measurement.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 23, 2008
    Inventors: Isaac V. Farr, David R. Otis, Casey T. Miller, Christie Dudenhoefer, Kenneth J. Ward
  • Publication number: 20080261326
    Abstract: A drop-on-demand system for manufacturing diagnostic test strips includes a drop-on-demand mechanism, and a drop volume feedback subsystem and/or a vision subsystem. The drop-on-demand mechanism dispenses one or more reagents on the diagnostic test strips in one or more desired volumes and at one or more desired locations. The drop volume feedback subsystem control volumes of the reagents dispensed by the drop-on-demand mechanism so that the drop-on-demand mechanism dispenses the reagents on the diagnostic test strips in the desired volumes. The vision subsystem aligns the drop-on-demand mechanism in relation to the diagnostic test strips so that the drop-on-demand mechanism dispenses the reagents on the diagnostic test strips at the desired locations.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 23, 2008
    Inventors: Christie Dudenhoefer, Kenneth Ward, Joseph W. Dody, Isaac Farr
  • Publication number: 20070037272
    Abstract: A microfluidic analysis system for optically analyzing a substance includes a light source having a plurality of selectable single-wavelength light sources, a substance presentation member optically coupled to the light source, and an optical detection system associated with the substance presentation member.
    Type: Application
    Filed: August 11, 2005
    Publication date: February 15, 2007
    Inventors: Christopher Beatty, Philip Harding, Christie Dudenhoefer, Charles Otis
  • Publication number: 20060246574
    Abstract: A dispenser for building a lateral flow immunoassay device comprises a fluid supply assembly and a jetting assembly. The fluid supply assembly comprises an antibody component including a plurality of reservoirs to supply at least one of member of a group comprising a species array of at least one species-specific antibody material, an anti-species array of at least one first anti-species antibody material, and a label-antibody array of at least one of a tag material and a second anti-species antibody material. The jetting assembly is in communication with the fluid supply assembly to enable dispensing the materials of the species array, the anti-species array, and the label-antibody array from the supply assembly onto a substrate.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 2, 2006
    Inventors: Sarah Rosenstein, Craig Olbrich, John Dunfield, Lauren Henry, Christie Dudenhoefer
  • Publication number: 20060246599
    Abstract: A lateral flow device, and related systems and methods is disclosed. A method of building a lateral flow immunoassay device comprises dispensing, via a fluid ejection device, a flow-inducing substance to form a flow membrane, and dispensing, via the fluid ejection device, a measured volume of biosubstances from an array of biosubstances to form a sample module, a tagging module, a reaction module, and a waste module on the membrane.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 2, 2006
    Inventors: Sarah Rosenstein, Cralg Olbrich, John Dunfield, Lauren Henry, Christie Dudenhoefer
  • Publication number: 20060183261
    Abstract: A method of forming a biological sensor on a predetermined area of a substrate. The method includes dispensing a plurality of layers on the predetermined area of the substrate. Each of the plurality of layers is formed of a substantially different fluid having a substantially different function. The dispensing of the layers is accomplished by a drop generating member.
    Type: Application
    Filed: February 15, 2005
    Publication date: August 17, 2006
    Inventors: Christie Dudenhoefer, John Dunfield, Lauren Henry, Craig Olbrich, Paul Yager
  • Patent number: 6986571
    Abstract: The present invention provides an ink filter for an inkjet print cartridge, the print cartridge having nozzles for dispensing ink from an ink supply. The filter is formed of a polymeric material and is configured to prevent particles in the ink supply from passing to the print nozzles. The polymeric filter material is overmolded in a carrier which is configured to be coupled between the ink supply and the print nozzles.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: January 17, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Christie Dudenhoefer, Karl Stefan Weibezahn, Gary J. Watts
  • Publication number: 20030197767
    Abstract: The present invention provides an ink filter for an inkjet print cartridge, the print cartridge having nozzles for dispensing ink from an ink supply. The filter is formed of a polymeric material and is configured to prevent particles in the ink supply from passing to the print nozzles. The polymeric filter material is overmolded in a carrier which is configured to be coupled between the ink supply and the print nozzles.
    Type: Application
    Filed: April 23, 2002
    Publication date: October 23, 2003
    Inventors: Christie Dudenhoefer, Karl Stefan Weibezahn, Gary J. Watts
  • Patent number: 6241349
    Abstract: An ink containment vessel characterized by improved resistance to the corrosive effects of ink, the ability to prevent air entry into the ink, and enhanced dimensional stability. The system also avoids the evaporative loss of volatile components from the ink supply. The ink containment vessel is produced from polyethylene naphthalate, at least one liquid crystal polymer, or polyethylene naphthalate combined with at least one liquid crystal polymer. The storage of ink within vessels made from the specialized materials listed above offers multiple benefits as previously noted and substantially improves the operational efficiency of the entire ink delivery system.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: June 5, 2001
    Assignee: Hewlett-Packard Company
    Inventors: James A. Harvey, Christie Dudenhoefer, William F. King, James P. Kearns, Mike M. Morrow
  • Patent number: 6196669
    Abstract: A high-durability flexible bladder designed for placement within in an ink containment vessel. When inflated and deflated, the bladder maintains proper pressure levels in the ink containment vessel which improves the operating efficiency of the entire printing system. The bladder has a specially-constructed side wall that prevents air and ink materials from passing therethrough and is characterized by a high degree of structural integrity and longevity. The side wall is produced from polyethylene naphthalate which provides the benefits listed above. Either a single material layer produced in whole or in part from polyethylene naphthalate may be used or a plurality of material layers can be employed in combination to manufacture the side wall, with at least one layer containing in whole or in part polyethylene naphthalate. As a result, problems involving premature bladder deterioration, leakage, and the like are avoided.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: March 6, 2001
    Assignee: Hewlett-Packard Company
    Inventors: James A Harvey, Christie Dudenhoefer, William F. King
  • Patent number: D655423
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: March 6, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A Nielsen, Christie Dudenhoefer, James Hankins, Mark W Woodruff, Robert Moline, Kenneth Duda, Darrel E Pozzesi, Matthew C Still
  • Patent number: D709620
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: July 22, 2014
    Assignee: Hewlett-Packard Development Company, L. P.
    Inventors: Jeffrey A. Nielsen, Christie Dudenhoefer, James Hankins, Mark W. Woodruff, Robert Moline, Kenneth Duda, Darrel E. Pozzesi, Matthew C. Still