Patents by Inventor David Champion

David Champion 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).

  • THREE-DIMENSIONAL (3D) PRINTING
    Publication number: 20180147777
    Abstract: In a 3D printing method, a first layer of a build material is applied. A part layer is patterned by selectively applying a penetrating liquid functional material (PLFM) on at least a portion of the first layer. The PLFM includes (in amounts by weight based on total wt % of the PLFM): from about 5%-15% of a first metal oxide nanoparticle having a particle size ranging from about 0.5 nm up to 10 nm, from about 0.25%-10% of a second metal oxide nanoparticle having at least one dimension greater than 10 nm, from about 1%-10% of an electromagnetic radiation absorber, from about 5%-50% of an organic solvent, a surfactant, and a balance of water. The first layer having the PLFM applied thereon is exposed to electromagnetic radiation, whereby the portion of the first layer at least partially fuses to form the part layer.
    Type: Application
    Filed: July 24, 2015
    Publication date: May 31, 2018
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: James Elmer Abbott, Jr., Raymond Adamic, David A. Champion
  • FABRICATING A THREE-DIMENSIONAL OBJECT
    Publication number: 20170246761
    Abstract: In one example, a method of fabricating a three-dimensional object includes depositing a layer of build material, depositing a coalescing agent onto the layer of build material according to a slice of three-dimensional model data, irradiating the coalescing agent with microwave radiation such that the coalescing agent converts the microwave radiation into heat to coalesce the build material in which the coalescing agent was deposited.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 31, 2017
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: David A. Champion, James Elmer Abbott, JR.
  • Seismic sensing device
    Patent number: 9279895
    Abstract: In one example, a land based seismic sensing device includes: a seismic sensing unit having a seismic sensor in a housing configured to be buried in the ground; a control unit including a battery in a weather resistant housing configured to be exposed above ground; and a flexible cable mechanically and electrically connecting the seismic sensing unit and the control unit. The cable includes a weather resistant jacket and an electrically conductive element inside the jacket detachably connected between electronic circuitry in the sensing unit and electronic circuitry in the control unit. In one example, the control unit housing includes a first compartment configured to stow the seismic sensing unit and a second compartment configured to stow the cable.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 8, 2016
    Assignee: Shell Oil Company
    Inventors: Kevin E Swier, David A Champion, David R. Otis, Jr.
  • SENSOR NODE LOCATION-BASED POWER OPTIMIZATION
    Publication number: 20140169252
    Abstract: Sensor node location-based power consumption optimization employs an adjustable minimum detectable signal (MDS) level that is set based on a location of a sensor node relative to a location of a source of an event signal. The sensor node includes a sensor to respond to the event signal and an interface module to determine the sensor response to the event signal. The interface module has the adjustable MDS level and a power consumption that is a function of the adjustable MDS level. The adjustable MDS level is set to optimize power consumption.
    Type: Application
    Filed: July 29, 2011
    Publication date: June 19, 2014
    Inventors: Neel Banerjee, George H. Corrigan, Andrew L. Van Brocklin, Anton N. Clarkson, David A. Champion
  • SEISMIC SENSING DEVICE
    Publication number: 20140126327
    Abstract: In one example, a land based seismic sensing device includes: a seismic sensing unit having a seismic sensor in a housing configured to be buried in the ground; a control unit including a battery in a weather resistant housing configured to be exposed above ground; and a flexible cable mechanically and electrically connecting the seismic sensing unit and the control unit. The cable includes a weather resistant jacket and an electrically conductive element inside the jacket detachably connected between electronic circuitry in the sensing unit and electronic circuitry in the control unit. In one example, the control unit housing includes a first compartment configured to stow the seismic sensing unit and a second compartment configured to stow the cable.
    Type: Application
    Filed: February 28, 2011
    Publication date: May 8, 2014
    Inventors: Kevin E. Swier, David A. Champion, Daivd R. Otis
  • Method for decoding 2X2 spatiotemporal codes, in particular Golden type code
    Patent number: 8194763
    Abstract: A method is provided for decoding spatiotemporal codes, in particular Golden type code. The received vector is subjected to a MMSE-GDFE filtering, a constellation re-centering to define a Z-matrix, a permutation to obtain X-shaped matrices, a trellis base reduction and a ZF-DFE algorithm by processing the elements of the Z-matrix layer by layer. Each layer includes both elements of the diagonal or anti-diagonal of the Z-matrix.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: June 5, 2012
    Assignee: COMSIS
    Inventor: David Champion
  • Shuttering and sealing device
    Patent number: 8179531
    Abstract: A shuttering and sealing device is disclosed. In one embodiment, the device includes an aperture through which light may pass to an optical sensor, a seal surrounding the aperture, and a shutter movable between an open position in which the shutter does not cover the aperture and a closed position in which the shutter covers the aperture and the seal seals the shutter around the aperture.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: May 15, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Carles Flotats Villagrasa, Jordi Ferran Cases, Oscar Martinez Bailac, David A. Champion, Stephan R. Clark
  • Fuel cell with integral manifold and laterally spaced electrodes
    Patent number: 7981560
    Abstract: A MEMS-based fuel cell has a substrate, an electrolyte in contact with the substrate, a cathode in contact with the electrolyte, an anode spaced apart from the cathode and in contact with the electrolyte, and an integral manifold for supplying either a fuel or an oxidant or both together, the integral manifold extending over at least a portion of the electrolyte and over at least one of the anode and cathode. Methods for making and using arrays of the fuel cells are disclosed.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: July 19, 2011
    Assignee: Eveready Battery Company, Inc.
    Inventors: Daniel A Kearl, David Champion, Gregory S Herman, Richard B. Peterson
  • Imparting Pattern into Material Using Embossing Roller
    Publication number: 20100326295
    Abstract: An embossing roller and a backing roller are positionally maintained so that the embossing roller and the backing roller define a gap therebetween. The temperature of the backing roller is maintained below a reference temperature. Material is fed between the embossing roller and the backing roll, where the material has been heated to a temperature greater than the reference temperature. As the material passes between and makes contact with the embossing roller and the backing roll, the embossing roller imparts a predefined pattern into the material. As the temperature of the embossing roller increases due to contact with the material, the temperature of the embossing roller is reduced so that it remains below the temperature of the material but above the reference temperature.
    Type: Application
    Filed: March 1, 2008
    Publication date: December 30, 2010
    Inventor: David A. Champion
  • SHUTTERING AND SEALING DEVICE
    Publication number: 20100321687
    Abstract: A shuttering and sealing device is disclosed. In one embodiment, the device includes an aperture through which light may pass to an optical sensor, a seal surrounding the aperture, and a shutter movable between an open position in which the shutter does not cover the aperture and a closed position in which the shutter covers the aperture and the seal seals the shutter around the aperture.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 23, 2010
    Inventors: Carles Flotats VILLAGRASA, Jordi Ferran CASES, Oscar Martinez BAILAC, David A. CHAMPION, Stephan R. CLARK
  • Fuel cell with integral manifold
    Publication number: 20100279207
    Abstract: A MEMS-based fuel cell has a substrate, an electrolyte in contact with the substrate, a cathode in contact with the electrolyte, an anode spaced apart from the cathode and in contact with the electrolyte, and an integral manifold for supplying either a fuel or an oxidant or both together, the integral manifold extending over at least a portion of the electrolyte and over at least one of the anode and cathode. Methods for making and using arrays of the fuel cells are disclosed.
    Type: Application
    Filed: December 20, 2007
    Publication date: November 4, 2010
    Inventors: Daniel A. Kearl, David Champion, Gregory S. Herman, Richard B. Peterson
  • Fuel cell with film having nanowires therein
    Patent number: 7790331
    Abstract: A fuel cell has a substrate with a film deposited thereon. The film has nanowires dispersed therein. Catalytic activity and conductivity is substantially enhanced throughout the film.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: September 7, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Champion, Neal W. Meyer, Peter Mardilovich, Gregory S Herman
  • Photonic-crystal filament and methods
    Patent number: 7777403
    Abstract: A photonic-crystal filament is formed by mixing a slurry comprising particles of substantially uniform size and a precursor material for a desired metal, urging the slurry through an orifice to force the particles and precursor material into a combination having a desired crystallographic configuration, drying the combination emerging from the orifice, and sintering the precursor material.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: August 17, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Champion, Gregory S. Herman, Hubert A. Vander Plas, David M. Schut
  • Method and system of convolutive coding for the transmission of space-time block codes according to the technique termed Golden Code
    Patent number: 7680204
    Abstract: A method is provided for convolutive coding for the transmission of space-time block codes according to the technique termed Golden Code, in a wireless communication network comprising at least a plurality of transmit antennas. The Golden Code coding is associated with a trellis coded modulation, and the necessary partitioning to the trellis is produced such that, for each partitioning step, a set ?? is multiplied by at least one element ? from the set Bk (k>1) of elements of Az such that: Bk={X?Az and |Det(X)|2=2k}, the set ??, termed “infinite Golden Code”, being a principal ideal of the ring Az as defined by the Golden Code technique.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: March 16, 2010
    Assignee: Comsis
    Inventor: David Champion
  • Sensor array
    Patent number: 7679603
    Abstract: Embodiments of a sensor array are disclosed.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: March 16, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David A. Champion, Anton N. Clarkson
  • METHOD FOR DECODING 2X2 SPATIOTEMPORAL CODES, IN PARTICULAR GOLDEN TYPE CODE
    Publication number: 20100034320
    Abstract: A method is provided for decoding spatiotemporal codes, in particular Golden type code. The received vector is subjected to a MMSE-GDFE filtering, a constellation re-centering to define a Z-matrix, a permutation to obtain X-shaped matrices, a trellis base reduction and a ZF-DFE algorithm by processing the elements of the Z-matrix layer by layer. Each layer includes both elements of the diagonal or anti-diagonal of the Z-matrix.
    Type: Application
    Filed: May 11, 2007
    Publication date: February 11, 2010
    Inventor: David Champion
  • Photonic structures, devices, and methods
    Patent number: 7608194
    Abstract: Photonic crystal structures are made by a method including steps of providing a substrate, depositing at least one planar layer to form a stack, each planar layer of the stack comprising two or more sublayers having different sublayer refractive indices, depositing a hard mask material, depositing an imprintable material over the hard mask material, patterning the imprintable material by imprinting an array of depressions, and directionally etching at the depressions a regular array of openings through the hard mask material and the stack.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: October 27, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: James Stasiak, David Champion, Kevin Peters, Donald J. Coulman, Tony S. Cruz-Uribe
  • Security device
    Patent number: 7599109
    Abstract: Embodiments of a security device utilizing electrochromic material are disclosed.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: October 6, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David A. Champion, Chinmay Suresh Betrabet
  • Compositional and structural gradients for fuel cell electrode materials
    Patent number: 7556880
    Abstract: A fuel cell includes at least one electrode operatively disposed in the fuel cell, and having a catalytically active surface. The present invention further includes a mechanism for maintaining a substantially uniform maximum catalytic activity over the surface of the electrode.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: July 7, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Gregory S Herman, David Champion, Peter Mardilovich, James O'Neil
  • Method for making a photonic structure
    Patent number: 7507441
    Abstract: A method for making a photonic structure, including creating a first vapor stream of a first vapor material, the first vapor stream having a first non-uniform flux in at least one direction; and moving a substrate in at least a portion of the vapor stream. In addition, the method includes depositing the first vapor material on a first major surface of said substrate, and forming a first layer and a density gradient in the first layer during deposition. The first layer is disposed on and the density gradient is in a direction perpendicular to the first major surface.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: March 24, 2009
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David Champion, James O'Neil, Peter Mardilovich, Gregory S Herman