Patents by Inventor William J. Stewart
William J. Stewart 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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Patent number: 11421337Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: GrantFiled: July 30, 2019Date of Patent: August 23, 2022Assignee: De Nora Holdings US, Inc.Inventors: William J Stewart, Matthew R Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C Showalter, Kyle Lee
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Publication number: 20210307658Abstract: A glucose annunciator comprising: i) a data eavesdropping interface configured to acquire blood glucose data transmitted by a wireless glucose monitor, the blood glucose data indicating a blood glucose level of a subject; and ii) an alert generator coupled to the data eavesdropping interface and configured to generate at least one of an audible indicium, a visible indicium, or a haptic indicium based on the blood glucose data but remote from the wireless glucose monitor. The indicium at least generally indicates the blood glucose level of the subject without requiring access to the wireless glucose monitor.Type: ApplicationFiled: March 30, 2021Publication date: October 7, 2021Inventors: William J. STEWART, Achu Geetha BYJU
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Publication number: 20190376204Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: ApplicationFiled: July 30, 2019Publication date: December 12, 2019Inventors: William J. Stewart, Matthew R. Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C. Showalter, Kyle Lee
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Patent number: 10400349Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: GrantFiled: March 8, 2016Date of Patent: September 3, 2019Assignee: De Nora Holdings US, Inc.Inventors: William J. Stewart, Matthew R. Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C. Showalter, Kyle Lee
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Publication number: 20160186357Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: ApplicationFiled: March 8, 2016Publication date: June 30, 2016Inventors: William J. Stewart, Matthew R. Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C. Showalter, Kyle Lee
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Publication number: 20140124378Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: ApplicationFiled: January 14, 2014Publication date: May 8, 2014Applicant: MIOX CorporationInventors: William J. Stewart, Matthew R. Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C. Showalter, Kyle Lee
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Publication number: 20120048741Abstract: Method and apparatus for a low maintenance, high reliability on-site electrolytic generator incorporating automatic cell monitoring for contaminant film buildup, as well as automatically removing or cleaning the contaminant film. This method and apparatus preferably does not require human intervention to clean. For high current density cells, cleaning is preferably performed by reversing the polarity of the electrodes and applying a lower current density to the electrodes, preferably by adjusting the salinity or brine concentration of the electrolyte while keeping the voltage constant. Electrolyte flow preferably comprises water and brine flows which are preferably separately monitored and automatically adjusted. For bipolar cells, flow between modules arranged in parallel is preferably approximately equally distributed between modules and between intermediate electrodes within each module.Type: ApplicationFiled: August 4, 2011Publication date: March 1, 2012Applicant: MIOX CorporationInventors: William J. Stewart, Matthew R. Santillanes, Kevin Schwarz, Justin Sanchez, Geofrey C. Showalter, Kyle Lee
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Patent number: 7565224Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: GrantFiled: December 22, 2003Date of Patent: July 21, 2009Assignee: Stuart Energy Systems Corp.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 7519453Abstract: A hydrogen energy system for a facility that is disposed off-board a vehicle. The system includes a hydrogen generator disposed at the facility for generating hydrogen by water electrolysis, a hydrogen storage apparatus for storing at least some of the hydrogen generated by the hydrogen generator, and a controller having a computer processor for receiving and processing certain control inputs. The controller is operatively connected to the hydrogen generator for controlling the generation of hydrogen based on the control inputs.Type: GrantFiled: February 15, 2007Date of Patent: April 14, 2009Assignee: Stuart Energy Systems Corp.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 7181316Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: GrantFiled: April 22, 2004Date of Patent: February 20, 2007Assignee: Stuart Energy Systems Corp.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 7062360Abstract: A hydrogen energy system is provided for one or more buildings. The system includes a hydrogen generator; at least one zone controller for receiving and processing demands from at least one hydrogen user associated with at least one zone of the one or more buildings; and a unit controller for receiving and processing hydrogen demand data received from the at least one zone controller.Type: GrantFiled: February 14, 2005Date of Patent: June 13, 2006Assignee: Stuart Energy Systems, Inc.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 6912450Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: GrantFiled: April 22, 2004Date of Patent: June 28, 2005Assignee: Stuart Energy Systems Corp.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Publication number: 20040194382Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Publication number: 20040199294Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Publication number: 20040199295Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Publication number: 20040131508Abstract: An energy distribution network for providing hydrogen fuel to a user comprising; energy source means; hydrogen production means to receive the energy from the energy resource means; hydrogen fuel user means to receive hydrogen from the hydrogen production means; and data collection, storage, control and supply means linked to the energy resource means, the hydrogen production means, and the hydrogen fuel user means to determine, control and supply hydrogen from the hydrogen production means. Preferably, the network comprises one or more water electrolysers and provides for the distribution of hydrogen, for use as a fuel for vehicles, fuel cells, electrical and thermal generators, and the like.Type: ApplicationFiled: December 22, 2003Publication date: July 8, 2004Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T.B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 6745105Abstract: An energy distribution network is provided including an energy source; a hydrogen production facility connected to the energy source; a recipient for hydrogen from the hydrogen production facility; and a controller. The controller controls the production of hydrogen by the hydrogen production facility based on inputs including energy resource availability.Type: GrantFiled: September 1, 1999Date of Patent: June 1, 2004Assignee: Stuart Energy Systems CorporationInventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong
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Patent number: 6665459Abstract: The present invention provides a wavelength selective optical filter device (240) for receiving input radiation and outputting corresponding filtered output radiation, characterized in that the filter device (240) includes a plurality of at least partially mutually coupled Fabry-Perot optical resonators (330, 340, 360; 360, 400, 430) for filtering the input radiation to generate the output radiation, the filter device (240) being tunable from a first radiation wavelength to a second radiation wavelength by mutually detuning the resonators in a period where the resonators are being retuned from the first wavelength (&lgr;1) to the second wavelength (&lgr;2) so that the filter device (240) is substantially in a non-responsive state during the period. The resonators incorporate freely suspended mirrors (360, 430) which are electrostatically actuated to affect tuning of the resonators (330, 340, 360; 360, 400, 430).Type: GrantFiled: May 17, 2002Date of Patent: December 16, 2003Assignee: Marconi UK Intellectual Property LimitedInventors: Rosemary Cush, William J Stewart, Ruth Hibberson
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Publication number: 20030224817Abstract: A mobile communication apparatus such as a mobile phone has an antenna which includes magnetically permeable material surrounded by a coil connected to a radio frequency source and/or receiver. Unlike the normal dipole antenna of a mobile phone, the magnetic antenna results in reduced absorption of the evanescent, non-radiative field of the antenna in the user.Type: ApplicationFiled: March 26, 2003Publication date: December 4, 2003Inventors: William J. Stewart, John B. Pendry
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Patent number: 6608811Abstract: A structure which exhibits magnetic properties when it receives electromagnetic radiation is formed from an array of capacitive elements each of which is smaller, and preferably much smaller, than the wavelength of the radiation. Each capacitive element has a low resistance conducting path associated with it and is such that a magnetic component of the received electromagnetic radiation induces an electrical current to flow around the path and through the associated element. The creation of internal magnetic fields generated by the flow of the induced electrical current gives rise to the structure's magnetic properties.Type: GrantFiled: November 3, 2000Date of Patent: August 19, 2003Assignee: Marconi Caswell LimitedInventors: Anthony J Holden, Michael C Wiltshire, David J Robbins, William J Stewart, John B Pendry