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).
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Publication number: 20240270943Abstract: 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: ApplicationFiled: June 7, 2022Publication date: August 15, 2024Inventors: Marjorie WELCHOFF, Kelly CARVER, Massoud GHASEMZADEH-BARVARZ, Stella COUTROS-HOFFMANN, Matthew CROWE, Julie HIRSCH, Senghane DIENG, Carlos LUCERO, John TZENG, Jelena MEDIC
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Publication number: 20210304346Abstract: 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: ApplicationFiled: March 31, 2020Publication date: September 30, 2021Inventors: Jennifer Lee-Baron, John Crowe, Gary Cudak, Nathan Peterson
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Patent number: 11103150Abstract: 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: GrantFiled: May 14, 2014Date of Patent: August 31, 2021Assignee: THE UNIVERSITY OF NOTTINGHAMInventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicolas Miles
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Publication number: 20140243622Abstract: 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: ApplicationFiled: May 14, 2014Publication date: August 28, 2014Applicant: The University of NottinghamInventors: John CROWE, Mark GRUBB, Barrie HAYES-GILL, Nicolas MILES
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Patent number: 8768424Abstract: 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: GrantFiled: April 11, 2007Date of Patent: July 1, 2014Assignee: The University of NottinghamInventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicholas Miles
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Publication number: 20120150053Abstract: 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: ApplicationFiled: October 31, 2011Publication date: June 14, 2012Applicant: MONICA HEALTHCARE LIMITEDInventors: Barrie HAYES-GILL, David JAMES, John CROWE, Jean-Francois PIERI
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Publication number: 20100294917Abstract: 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: ApplicationFiled: October 30, 2008Publication date: November 25, 2010Inventors: Stephen Morgan, Barrie Hayes-Gill, John Crowe, Malcolm Woolfson
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Publication number: 20090306487Abstract: 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: ApplicationFiled: April 11, 2007Publication date: December 10, 2009Applicant: THE UNIVERSITY OF NOTTINGHAMInventors: John Crowe, Mark Grubb, Barrie Hayes-Gill, Nicolas Miles
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Publication number: 20090192506Abstract: 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: ApplicationFiled: November 17, 2006Publication date: July 30, 2009Inventors: Matthias Vaska, John Crowe, Gary Miller, Jonathan Podmore, Gerard Champsaur, Drew Hoffman, Casey Tansey
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Publication number: 20090192396Abstract: 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: ApplicationFiled: March 30, 2009Publication date: July 30, 2009Applicant: MONICA HEALTHCARE LIMITEDInventors: Barrie Hayes-Gill, David James, John Crowe, Jean-Francois Pieri
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Patent number: 7532923Abstract: 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: GrantFiled: October 6, 2000Date of Patent: May 12, 2009Assignee: Monica Healthcare LimitedInventors: Barrie Hayes-Gill, David James, John Crowe, Jean-Francois Pieri
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Patent number: 7531002Abstract: A prosthetic endplate having articulation surfaces whose relative positions can be post-operatively adjusted.Type: GrantFiled: April 16, 2004Date of Patent: May 12, 2009Assignee: Depuy Spine, Inc.Inventors: Jeffrey Karl Sutton, Edward John Crowe, Kristy Lynn Davis, Michael O'Neil, Richard Pellegrino, Hassan Serhan
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Publication number: 20080045936Abstract: 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: ApplicationFiled: April 17, 2007Publication date: February 21, 2008Inventors: Matthias Vaska, Stephen Boyd, Hanson Gifford, James Cox, Jonathan Podmore, John Crowe, Michael Holzbaur, Timothy Ciciarelli, Drew Hoffmann, Casey Tansey, John Sliwa, Scott Anderson
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Publication number: 20070293854Abstract: 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: ApplicationFiled: August 9, 2007Publication date: December 20, 2007Inventors: Benjamin PLESS, Scott Anderson, Jonathan Podmore, Matthias Vaska, John Crowe, Roxanne Richman, Timothy Ciciarelli, David Gallup, Jack Ulstad
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Publication number: 20070293855Abstract: 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: ApplicationFiled: July 24, 2007Publication date: December 20, 2007Inventors: John Sliwa, Matthias Vaska, Jonathan Podmore, Scott Anderson, Gerard Champsaur, John Crowe, Stephen Morse, Gary Miller
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Publication number: 20070255276Abstract: 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: ApplicationFiled: April 16, 2007Publication date: November 1, 2007Inventors: John Sliwa, Matthias Vaska, Jonathan Podmore, Roxanne Richman, Scott Anderson, Gerard Champsaur, John Crowe
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Publication number: 20070213627Abstract: 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: ApplicationFiled: October 13, 2004Publication date: September 13, 2007Inventors: David James, John Crowe, Barrie Hayes-Gill, Carl Barratt, Jean-Francois Pieri
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Publication number: 20070208395Abstract: 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: ApplicationFiled: March 14, 2007Publication date: September 6, 2007Inventors: Norbert Leclerc, Brendan Moran, James Flom, Michael Gertner, Jonathan Podmore, Michael Rode, John Crowe, Erica Rogers
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Publication number: 20070105220Abstract: 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: ApplicationFiled: August 6, 2004Publication date: May 10, 2007Applicant: The Regents of the University of CaliforniaInventors: John Crowe, Fern Tablin, Nelly Tsvetkova, Zsolt Torok, Gyana Satpathy, Denis Dwyre, Rachna Bali, Mitali Banerjee, Azadeh Kheirolomoom
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Patent number: D831378Type: GrantFiled: July 11, 2017Date of Patent: October 23, 2018Inventor: John A. Crowe