Patents by Inventor John A. Crowe

John A. Crowe 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: 20240270943
    Abstract: The technology disclosed in this specification pertains to pectin containing cellulosic materials. The cellulosic material is modified so that it can form strong gels when dispersed in aqueous solution. Also disclosed are methods for modifying the cellulosic materials, including, at least in some embodiments, methods to monitor changes in the infrared spectrum of the cellulosic material that happen during a modification reaction to control the reaction and obtain end products capable of making gels having the desired gel strength.
    Type: Application
    Filed: June 7, 2022
    Publication date: August 15, 2024
    Inventors: Marjorie WELCHOFF, Kelly CARVER, Massoud GHASEMZADEH-BARVARZ, Stella COUTROS-HOFFMANN, Matthew CROWE, Julie HIRSCH, Senghane DIENG, Carlos LUCERO, John TZENG, Jelena MEDIC
  • Publication number: 20210304346
    Abstract: Systems and method for transporting a rider to a destination based on position coordinates of a computing device are disclosed. According to an aspect, a method includes receiving a request for transportation to a destination proximate a mobile computing device. The method also includes determining position coordinates of the mobile computing device. Further, the method includes communicating, to a computing device of a driver associated with the request, the position coordinates of the mobile computing device for indicating the position coordinates as the destination for the request. The method also includes determining updated positioned coordinates of the mobile computing device. Further, the method includes communicating, to the computing device of the driver associated with the request, the updated position coordinates of the mobile computing device.
    Type: Application
    Filed: March 31, 2020
    Publication date: September 30, 2021
    Inventors: Jennifer Lee-Baron, John Crowe, Gary Cudak, Nathan Peterson
  • Patent number: 11103150
    Abstract: A photoplethysmograph device includes a light source for illuminating a target object. A modulator drives the light source such that the output intensity varies as a function of a modulation signal at a modulation frequency. A detector receives light from the target object and generates an electrical output as a function of the intensity of received light. A demodulator with a local oscillator receives the detector output and produces a demodulated output, insensitive to any phase difference between the modulation signal and the oscillator, indicative of blood volume as a function of time and/or blood composition. A number of demodulators may be provided to derive signals from multiple light sources of different wavelengths, or from an array of detectors. The plethysmograph may operate in a transmission mode or a reflectance mode. When in a reflectance mode, the device may use the green part of the optical spectrum and may use polarising filters.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 31, 2021
    Assignee: THE UNIVERSITY OF NOTTINGHAM
    Inventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicolas Miles
  • Publication number: 20140243622
    Abstract: A photoplethysmograph device includes a light source for illuminating a target object. A modulator drives the light source such that the output intensity varies as a function of a modulation signal at a modulation frequency. A detector receives light from the target object and generates an electrical output as a function of the intensity of received light. A demodulator with a local oscillator receives the detector output and produces a demodulated output, insensitive to any phase difference between the modulation signal and the oscillator, indicative of blood volume as a function of time and/or blood composition. A number of demodulators may be provided to derive signals from multiple light sources of different wavelengths, or from an array of detectors. The plethysmograph may operate in a transmission mode or a reflectance mode. When in a reflectance mode, the device may use the green part of the optical spectrum and may use polarising filters.
    Type: Application
    Filed: May 14, 2014
    Publication date: August 28, 2014
    Applicant: The University of Nottingham
    Inventors: John CROWE, Mark GRUBB, Barrie HAYES-GILL, Nicolas MILES
  • Patent number: 8768424
    Abstract: A photoplethysmograph device includes a light source for illuminating a target object. A modulator drives the light source such that the output intensity varies as a function of a modulation signal at a modulation frequency. A detector receives light from the target object and generates an electrical output as a function of the intensity of received light. A demodulator with a local oscillator receives the detector output and produces a demodulated output, insensitive to any phase difference between the modulation signal and the oscillator, indicative of blood volume as a function of time and/or blood composition. A number of demodulators may be provided to derive signals from multiple light sources of different wavelengths, or from an array of detectors. The plethysmograph may operate in a transmission mode or a reflectance mode. When in a reflectance mode, the device may use the green part of the optical spectrum and may use polarizing filters.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: July 1, 2014
    Assignee: The University of Nottingham
    Inventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicholas Miles
  • Publication number: 20120150053
    Abstract: An apparatus and method for detecting the heart rate of a fetus. The apparatus includes three detectors detecting heart beats of the fetus, each detector including at least two electrodes detecting ECG signals, the detectors being positioned on an abdomen of a mother in use. The apparatus also includes a processor coupled to the detectors, the processor being adapted to process the ECG signals received from the detectors and determine a heart rate of the fetus. The method of determining the heart rate of the fetus includes determining a position of the fetus within a womb, placing the detectors on an abdomen of the mother, monitoring the ECG signals obtained from the detectors for a predetermined length of time, and processing the ECG signals obtained from the detectors positioned on the abdomen of the mother to determine heart beats of the mother.
    Type: Application
    Filed: October 31, 2011
    Publication date: June 14, 2012
    Applicant: MONICA HEALTHCARE LIMITED
    Inventors: Barrie HAYES-GILL, David JAMES, John CROWE, Jean-Francois PIERI
  • Publication number: 20100294917
    Abstract: For imaging, an electromagnetic radiation sensor is used to produce an output when illuminated by a modulated laser light. In use, the output is determined by a laser Doppler signal illuminating the sensor. Various examples are described for achieving integration of on-chip processing onto the substrate providing the sensor. In one example, the output of the sensor is a logarithmic function of the illuminating laser Doppler signal. In another example, the output of the sensor is normalized. In another example, an amplifier arrangement is provided to amplify the output of the sensor, the amplifier gain being lower at DC than at the frequency range of the laser Doppler signal. In another example, a filter is integrated into the semiconductor device. In another example, a bandpass filter and frequency weighted filter are provided, and their outputs are processed to average values over time.
    Type: Application
    Filed: October 30, 2008
    Publication date: November 25, 2010
    Inventors: Stephen Morgan, Barrie Hayes-Gill, John Crowe, Malcolm Woolfson
  • Publication number: 20090306487
    Abstract: A photoplethysmograph device includes a light source for illuminating a target object. A modulator drives the light source such that the output intensity varies as a function of a modulation signal at a modulation frequency. A detector receives light from the target object and generates an electrical output as a function of the intensity of received light. A demodulator with a local oscillator receives the detector output and produces a demodulated output,insensitive to any phase difference between the modulation signal and the oscillator, indicative of blood volume as a function of time and/or blood composition. A number of demodulators may be provided to derive signals from multiple light sources of different wavelengths, or from an array of detectors. The plethysmograph may operate in a transmission mode or a reflectance mode. When in a reflectance mode, the device may use the green part of the optical spectrum and may use polarising filters.
    Type: Application
    Filed: April 11, 2007
    Publication date: December 10, 2009
    Applicant: THE UNIVERSITY OF NOTTINGHAM
    Inventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicolas Miles
  • Publication number: 20090192506
    Abstract: An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.
    Type: Application
    Filed: November 17, 2006
    Publication date: July 30, 2009
    Inventors: Matthias Vaska, John Crowe, Gary Miller, Jonathan Podmore, Gerard Champsaur, Drew Hoffman, Casey Tansey
  • Publication number: 20090192396
    Abstract: An apparatus and method for detecting the heart rate of a fetus. The apparatus includes three detectors detecting heart beats of the fetus, each detector including at least two electrodes detecting ECG signals, the detectors being positioned on an abdomen of a mother in use. The apparatus also includes a processor coupled to the detectors, the processor being adapted to process the ECG signals received from the detectors and determine a heart rate of the fetus. The method of determining the heart rate of the fetus includes determining a position of the fetus within a womb, placing the detectors on an abdomen of the mother, monitoring the ECG signals obtained from the detectors for a predetermined length of time, and processing the ECG signals obtained from the detectors positioned on the abdomen of the mother to determine heart beats of the mother.
    Type: Application
    Filed: March 30, 2009
    Publication date: July 30, 2009
    Applicant: MONICA HEALTHCARE LIMITED
    Inventors: Barrie Hayes-Gill, David James, John Crowe, Jean-Francois Pieri
  • Patent number: 7532923
    Abstract: The present invention relates to apparatus for detecting the heart rate of a fetus. The apparatus includes at least two detectors for detecting heart beats of the fetus, each detector comprising at least two electrodes for detecting ECG signals. A processor, which is coupled to the detectors, is used to process the ECG signals received from each detector and determine the heart rate of the fetus.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: May 12, 2009
    Assignee: Monica Healthcare Limited
    Inventors: Barrie Hayes-Gill, David James, John Crowe, Jean-Francois Pieri
  • Patent number: 7531002
    Abstract: A prosthetic endplate having articulation surfaces whose relative positions can be post-operatively adjusted.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: May 12, 2009
    Assignee: Depuy Spine, Inc.
    Inventors: Jeffrey Karl Sutton, Edward John Crowe, Kristy Lynn Davis, Michael O'Neil, Richard Pellegrino, Hassan Serhan
  • Publication number: 20080045936
    Abstract: An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.
    Type: Application
    Filed: April 17, 2007
    Publication date: February 21, 2008
    Inventors: Matthias Vaska, Stephen Boyd, Hanson Gifford, James Cox, Jonathan Podmore, John Crowe, Michael Holzbaur, Timothy Ciciarelli, Drew Hoffmann, Casey Tansey, John Sliwa, Scott Anderson
  • Publication number: 20070293854
    Abstract: A control system alters one or more characteristics of an ablating element to ablate tissue. In one aspect, the control system delivers energy nearer to the surface of the tissue by changing the frequency or power. In another aspect, the ablating element delivers focused ultrasound which is focused in at least one dimension. The ablating device may also have a number of ablating elements with different characteristics such as focal length.
    Type: Application
    Filed: August 9, 2007
    Publication date: December 20, 2007
    Inventors: Benjamin PLESS, Scott Anderson, Jonathan Podmore, Matthias Vaska, John Crowe, Roxanne Richman, Timothy Ciciarelli, David Gallup, Jack Ulstad
  • Publication number: 20070293855
    Abstract: An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.
    Type: Application
    Filed: July 24, 2007
    Publication date: December 20, 2007
    Inventors: John Sliwa, Matthias Vaska, Jonathan Podmore, Scott Anderson, Gerard Champsaur, John Crowe, Stephen Morse, Gary Miller
  • Publication number: 20070255276
    Abstract: An ablating device has a cover which holds an interface material such as a gel. The cover contains the interface material during initial placement of the device. The ablating device may also have a removable tip or a membrane filled with fluid. In still another aspect, the ablating device may be submerged in liquid during operation.
    Type: Application
    Filed: April 16, 2007
    Publication date: November 1, 2007
    Inventors: John Sliwa, Matthias Vaska, Jonathan Podmore, Roxanne Richman, Scott Anderson, Gerard Champsaur, John Crowe
  • Publication number: 20070213627
    Abstract: Fetal behaviour is monitored by receiving ECG data from a set of electrodes attached to a materrial body. A waveform pre-processor identifies a succession of fetal ECG complex waveforms within the received data and a waveform processor determines differences in the processor succession of fetal ECG complex waveforms over time. An event logger determines from the determined differences a number of fetal movements during the period of time. Fetal spatial presentation and/or position within the uterus may also be determined from fetal ECG data acquired from a plurality of electrodes positioned on the maternal abdomen in a predetermined configuration. A number of fetal ECG complex waveforms are identified within the data, and each of the waveforms is compared with a set of predetermined fetal ECG complex templates ascribed to the predetermined electrode configuration to determine a template that best matches the identified fetal ECG waveforms.
    Type: Application
    Filed: October 13, 2004
    Publication date: September 13, 2007
    Inventors: David James, John Crowe, Barrie Hayes-Gill, Carl Barratt, Jean-Francois Pieri
  • Publication number: 20070208395
    Abstract: A method and apparatus is described for treating a target body surface using a radiation applicator. The therapeutic treatment apparatus adapted to conform to a patients body. The treatment apparatus comprises a plurality of light sources coupled with a flexible substrate, a light integrator in at least a portion of the optical path between the light source and the patient's body surface, a power supply, and a controller.
    Type: Application
    Filed: March 14, 2007
    Publication date: September 6, 2007
    Inventors: Norbert Leclerc, Brendan Moran, James Flom, Michael Gertner, Jonathan Podmore, Michael Rode, John Crowe, Erica Rogers
  • Publication number: 20070105220
    Abstract: A dehydrated composition is provided that includes freeze-dried erythrocytic cells. The invention further provides methods for loading a solute into a cell comprising disposing a cell in a solution having a solute concentration of sufficient magnitude to produce hyperosmotic pressure on the cell for transferring a solute from the solution into cell.
    Type: Application
    Filed: August 6, 2004
    Publication date: May 10, 2007
    Applicant: The Regents of the University of California
    Inventors: John Crowe, Fern Tablin, Nelly Tsvetkova, Zsolt Torok, Gyana Satpathy, Denis Dwyre, Rachna Bali, Mitali Banerjee, Azadeh Kheirolomoom
  • Patent number: D831378
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: October 23, 2018
    Inventor: John A. Crowe