Patents by Inventor Christopher Duncan

Christopher Duncan 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).

  • Publication number: 20230240487
    Abstract: A portable automated toilet cleaning apparatus includes a frame that fits over the toilet, and mechanical brushes or scrubbing implements that apply a scrubbing motion to surfaces of the toilet. The cleaning apparatus also includes spray jets or nozzles for directing fluid at surfaces to be cleaned. Straps may be provided to raise and hold the toilet seat and lid at angles relative to the toilet bowl, so that upper and lower surfaces of the seat and lid can be accessed by the brushes or scrubbing implements and the spray jets. A mat may also be provided at a lower side of the apparatus to collect wastewater and allow it to be poured or siphoned into the toilet bowl and disposed of by flushing.
    Type: Application
    Filed: January 11, 2023
    Publication date: August 3, 2023
    Inventor: Ronald Christopher Duncan, JR.
  • Patent number: 11596346
    Abstract: A technology is described for determining an intended movement from neuromuscular signals. An example method (800) includes receiving electromyography (EMG) data corresponding to single-ended channels of an electrode array (810), where EMG signals are detected by electrodes comprising the single-ended channels of the electrode array and the EMG signals are converted to the EMG data. Determining differential channel pairs for the single-ended channels of the electrode array (820) and extracting feature data from the EMG data of the differential channel pairs (830). Thereafter a feature data set is selected from the feature data of the differential channel pairs (840) and the feature data set is input to a decode model configured to correlate the feature data set to an intended movement (850). Decode output is received from the decode model indicating the intended movement (860) and the decode output is provided to a device (870).
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: March 7, 2023
    Assignee: University of Utah Research Foundation
    Inventors: Suzanne Wendelken, Tyler Davis, David Page, David Kluger, David Warren, Gregory Clark, Christopher Duncan, Jacob Nieveen
  • Publication number: 20220022801
    Abstract: A technology is described for determining an intended movement from neuromuscular signals. An example method (800) includes receiving electromyography (EMG) data corresponding to single-ended channels of an electrode array (810), where EMG signals are detected by electrodes comprising the single-ended channels of the electrode array and the EMG signals are converted to the EMG data. Determining differential channel pairs for the single-ended channels of the electrode array (820) and extracting feature data from the EMG data of the differential channel pairs (830). Thereafter a feature data set is selected from the feature data of the differential channel pairs (840) and the feature data set is input to a decode model configured to correlate the feature data set to an intended movement (850). Decode output is received from the decode model indicating the intended movement (860) and the decode output is provided to a device (870).
    Type: Application
    Filed: August 1, 2017
    Publication date: January 27, 2022
    Inventors: Suzanne Wendelken, Tyler Davis, David Page, David Kluger, David Warren, Gregory Clark, Christopher Duncan, Jacob Nieveen
  • Patent number: 10602823
    Abstract: A handbag includes interior pockets or audible compartments that, when touched, provide an audible identification of contents, enabling objects to be easily retrieved despite the number of objects stored in the handbag and in a dark environment. The audible content identification may additionally be combined with a variety of additional “smart” or convenience features, such as audible reminders of items on a checklist input through a smartphone interface or memo pad or suggestions for hairstyles based on a weather report.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: March 31, 2020
    Inventor: Ronald Christopher Duncan, Jr.
  • Patent number: 10549099
    Abstract: A technology is described for an electronic peripheral nerve stimulation system. The electronic nerve stimulation system can include a stimulation device and an electrode array. The stimulation device can be operable to generate a high-frequency alternating current. The electrode array can be operable to apply the high-frequency alternating current received from the stimulation device to selected subpopulations of peripheral nerve fibers within a peripheral nerve to block transmission of neural signals along the selected subpopulations of peripheral nerve fibers within the peripheral nerve.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: February 4, 2020
    Assignee: University of Utah Research Foundation
    Inventors: David Kluger, Christopher Duncan, David Page, Gregory Clark, Tyler Davis, Suzanne Wendelken
  • Patent number: 10252053
    Abstract: A technology is described for an electronic nerve stimulation system. The electronic nerve stimulation system can include a stimulation device operable to generate a high-frequency alternating current. The electronic nerve stimulation system can include one or more wearable electrodes operable to apply the high-frequency alternating current from the stimulation device to peripheral nerves to provide an electrical stimulation of neuronal tissue to treat pain. The one or more wearable electrodes can interface with the stimulation device via a connection system.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: April 9, 2019
    Assignee: University of Utah Research Foundation
    Inventors: David Page, Christopher Duncan, David Kluger, Zachary Kagan, Gregory Clark
  • Patent number: 9973543
    Abstract: Methods and systems for switching between computing devices during an online meeting are described herein. A collaboration server may receive a token from a first computing device connected to an online meeting hosted by the collaboration server. The collaboration server may receive another token from a second computing device and determine whether the received tokens match. If so, the collaboration server may establish an association between the second computing device and the meeting participant attending the online meeting via the first computing device. The collaboration server may accept a request from the second computing device to join the online meeting thus allowing the meeting participant to continue the online meeting from the second computing device.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: May 15, 2018
    Assignee: GetGo, Inc.
    Inventors: Gaurav Chitroda, Paul FitzGerald, Christopher Duncan, Carey Caulfield
  • Publication number: 20170312522
    Abstract: A technology is described for an electronic peripheral nerve stimulation system. The electronic nerve stimulation system can include a stimulation device and an electrode array. The stimulation device can be operable to generate a high-frequency alternating current. The electrode array can be operable to apply the high-frequency alternating current received from the stimulation device to selected subpopulations of peripheral nerve fibers within a peripheral nerve to block transmission of neural signals along the selected subpopulations of peripheral nerve fibers within the peripheral nerve.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 2, 2017
    Inventors: David Kluger, Christopher Duncan, David Page, Gregory Clark, Tyler Davis, Suzanne Wendelken
  • Publication number: 20170281941
    Abstract: A technology is described for an electronic nerve stimulation system. The electronic nerve stimulation system can include a stimulation device operable to generate a high-frequency alternating current. The electronic nerve stimulation system can include one or more wearable electrodes operable to apply the high-frequency alternating current from the stimulation device to peripheral nerves to provide an electrical stimulation of neuronal tissue to treat pain. The one or more wearable electrodes can interface with the stimulation device via a connection system.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 5, 2017
    Inventors: David Page, Christopher Duncan, David Kluger, Zachary Kagan, Gregory Clark
  • Publication number: 20160105472
    Abstract: Methods and systems for switching between computing devices during an online meeting are described herein. A collaboration server may receive a token from a first computing device connected to an online meeting hosted by the collaboration server. The collaboration server may receive another token from a second computing device and determine whether the received tokens match. If so, the collaboration server may establish an association between the second computing device and the meeting participant attending the online meeting via the first computing device. The collaboration server may accept a request from the second computing device to join the online meeting thus allowing the meeting participant to continue the online meeting from the second computing device.
    Type: Application
    Filed: October 13, 2014
    Publication date: April 14, 2016
    Inventors: Gaurav Chitroda, Paul FitzGerald, Christopher Duncan, Carey Caulfield
  • Patent number: 8572133
    Abstract: A system is for identifying a selected target in a geographic model. The system includes a database configured to store electronically a geographic model, different target model types with respective model-type metadata associated therewith, and different unique targets with unique target metadata associated therewith. A processor cooperates with the database and determines a proposed type-match between a selected target, with selected target metadata associated therewith, and one of the plurality of different target model types stored in the database based upon the selected target metadata and the model-type metadata. The processor also generates updated selected target metadata based upon confirmation of the proposed type-match, and determines a proposed unique target-match between the selected target and one of the different unique targets based upon confirmation of the proposed type-match and based upon the updated selected target metadata and the unique target metadata.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 29, 2013
    Assignee: Harris Corporation
    Inventors: Gilbert Christopher Duncan, Guillermo E. Gutierrez, Belinda Villegas
  • Patent number: 8557649
    Abstract: Methods for controlling the height of semiconductor structures are disclosed. Amorphous carbon is used as a stopping layer for controlling height variability. In one embodiment, the height of replacement metal gates for transistors is controlled. In another embodiment, the step height of a shallow trench isolation region is controlled.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 15, 2013
    Assignee: International Business Machines Corporation
    Inventors: Rajasekhar Venigalla, Michael Vincent Aquilino, Massud A. Aminpur, Michael P. Belyansky, Unoh Kwon, Christopher Duncan Sheraw, Daewon Yang
  • Publication number: 20130102125
    Abstract: Methods for controlling the height of semiconductor structures are disclosed. Amorphous carbon is used as a stopping layer for controlling height variability. In one embodiment, the height of replacement metal gates for transistors is controlled. In another embodiment, the step height of a shallow trench isolation region is controlled.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 25, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Rajasekhar Venigalla, Michael Vincent Aquilino, Massud A. Aminpur, Michael P. Belyansky, Unoh Kwon, Christopher Duncan Sheraw, Daewon Yang
  • Publication number: 20120320057
    Abstract: A communications system includes an image data server configured to store a three dimensional (3D) geospatial model, and generate a series of two dimensional (2D) images corresponding to different vantage points for a given area of the 3D geospatial model. A mobile electronic device is configured to cooperate with the image data server and includes a display, and a processor coupled to the display. The processor is configured to present an initial image from the series of 2D images on the display corresponding to an initial vantage point, permit selection of a next vantage point, and display a next image of the series of 2D images on the display corresponding to the next vantage point.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: Harris Corporation
    Inventors: Guillermo E. Gutierrez, Gilbert Christopher Duncan, Belinda R. Villegas
  • Publication number: 20110238689
    Abstract: A system is for identifying a selected target in a geographic model. The system includes a database configured to store electronically a geographic model, different target model types with respective model-type metadata associated therewith, and different unique targets with unique target metadata associated therewith. A processor cooperates with the database and determines a proposed type-match between a selected target, with selected target metadata associated therewith, and one of the plurality of different target model types stored in the database based upon the selected target metadata and the model-type metadata. The processor also generates updated selected target metadata based upon confirmation of the proposed type-match, and determines a proposed unique target-match between the selected target and one of the different unique targets based upon confirmation of the proposed type-match and based upon the updated selected target metadata and the unique target metadata.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 29, 2011
    Applicant: Harris Corporation, Corporation of the State of Delaware
    Inventors: Gilbert Christopher Duncan, Guillermo E. Gutierrez, Belinda Villegas
  • Patent number: 6989353
    Abstract: A method is disclosed for reducing sag in drilling and completion fluids and in workover fluids. The method employs a drilling fluid comprising a low molecular weight polyalkyl methacrylate with an average molecular weight ranging from about 40,000 to about 90,000. This additive does not result in significantly increased viscosity of the fluid.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: January 24, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Colin Temple, Andrew Forbes Paterson, Christopher Duncan Leith
  • Publication number: 20060010637
    Abstract: This disclosure relates to mopping trolleys and has particular reference to mopping trolleys for facilitating the cleaning of a floor area. According to one aspect of the present invention there is provided a mopping trolley comprising carriage means capable of translation movement over a surface, a mop press assembly carried by said carriage means for expressing liquid from a mop head inserted into the press and at least two liquid receptacles, wherein a waste receptacle is arranged to receive waste liquid expressed from the mop press, and a clean receptacle is for providing a source of clean liquid for use in mopping.
    Type: Application
    Filed: April 9, 2003
    Publication date: January 19, 2006
    Inventors: Christopher Duncan, Michael Gailes
  • Publication number: 20060003636
    Abstract: According to the present invention there is provided an electrical appliance having a releasable cable connector for electrically connecting the appliance to a remote power supply, wherein a first junction means is adapted to provide the releasable electrical connection between the cable connector and the appliance, characterised by the provision of a second junction means adapted to provide a non-releasable, hard-wired electrical connection between an alternative cable connector and the appliance, wherein the first junction means and the second junction means are arranged and configured so that the selection and use of one of said junctions by attachment of one cable connector precludes the simultaneous selection of the other connector.
    Type: Application
    Filed: April 29, 2003
    Publication date: January 5, 2006
    Inventors: Christopher Duncan, Michael Gailes
  • Publication number: 20050248454
    Abstract: Methods and apparatus are described for marine asset security and tracking (MAST). A method includes transmitting identification data, location data and environmental state sensor data from a radio frequency tag. An apparatus includes a radio frequency tag that transmits identification data, location data and environmental state sensor data. Another method includes transmitting identification data and location data from a radio frequency tag using hybrid spread-spectrum modulation. Another apparatus includes a radio frequency tag that transmits both identification data and location data using hybrid spread-spectrum modulation.
    Type: Application
    Filed: May 6, 2004
    Publication date: November 10, 2005
    Inventors: Gregory Hanson, Stephen Fulton Smith, Michael Moore, Eric Lesley Dobson, Jeffrey Blair, Christopher Duncan, Roberto Lenarduzzi
  • Publication number: 20050246845
    Abstract: The disclosure relates to the floor scrubbing or finishing machines. There is provided a machine for scrubbing or finishing a floor surface comprising carriage means adapted for translational movement over a floor surface, a workhead, an electric motor carried by the carriage means and arranged in use to drive the workhead and battery support means adapted in use to support at least one battery as a source of electric power for driving the electric motor, wherein said battery support means are adapted to support said at least one battery so that said at least one battery can be positioned in a selected one of a range of positions relative to said workhead whereby the loading on said workhead can be varied as required.
    Type: Application
    Filed: April 21, 2005
    Publication date: November 10, 2005
    Inventors: Christopher Duncan, John Findlay