Patents by Inventor John Dusl
John Dusl 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: 10966809Abstract: A method and a device for treating dental caries using microwave energy applied directly to teeth at frequencies that are lethal to the bacteria in caries, without being destructive to tooth tissues. The method and a device will have a significant economic and health impact, leading to a reduction in traditional surgical interventions, as well by improving access to care for those with health disparities.Type: GrantFiled: February 3, 2014Date of Patent: April 6, 2021Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATIONInventors: Ivan Stangel, Marguerite A. Sognier, George D. Arndt, Diane L. Byerly, John Dusl
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Patent number: 9328000Abstract: A system for decontaminating a medium. The system can include a medium having one or more contaminants disposed therein. The contaminants can be or include bacteria, fungi, parasites, viruses, and combinations thereof. A microwave energy radiation device can be positioned proximate the medium. The microwave energy radiation device can be adapted to generate a signal having a frequency from about 10 GHz to about 100 GHz. The signal can be adapted to kill one or more of the contaminants disposed within the medium while increasing a temperature of the medium by less than about 10° C.Type: GrantFiled: December 17, 2015Date of Patent: May 3, 2016Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Diane Byerly, Marguerite Sognier, John Dusl
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Patent number: 9242874Abstract: A system for decontaminating a medium. The system can include a medium having one or more contaminants disposed therein. The contaminants can be or include bacteria, fungi, parasites, viruses, and combinations thereof. A microwave energy radiation device can be positioned proximate the medium. The microwave energy radiation device can be adapted to generate a signal having a frequency from about 10 GHz to about 100 GHz. The signal can be adapted to kill one or more of the contaminants disposed within the medium while increasing a temperature of the medium by less than about 10° C.Type: GrantFiled: November 26, 2013Date of Patent: January 26, 2016Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Diane Byerly, Marguerite Sognier, John Dusl
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Publication number: 20150374471Abstract: A method and a device for treating dental caries using microwave energy applied directly to teeth at frequencies that are lethal to the bacteria in caries, without being destructive to tooth tissues. The method and a device will have a significant economic and health impact, leading to a reduction in traditional surgical interventions, as well by improving access to care for those with health disparities.Type: ApplicationFiled: February 3, 2014Publication date: December 31, 2015Inventors: Ivan Stangel, Marguerite A. Sognier, George D. Arndt, Diane L. Byerly, John Dusl
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Patent number: 8116350Abstract: A passive tracking system is provided with a plurality of ultrawideband (UWB) receivers that is asynchronous with respect to a UWB transmitter. A geometry of the tracking system may utilize a plurality of clusters with each cluster comprising a plurality of antennas. Time Difference of Arrival (TDOA) may be determined for the antennas in each cluster and utilized to determine Angle of Arrival (AOA) based on a far field assumption regarding the geometry. Parallel software communication sockets may be established with each of the plurality of UWB receivers. Transfer of waveform data may be processed by alternately receiving packets of waveform data from each UWB receiver. Cross Correlation Peak Detection (CCPD) is utilized to estimate TDOA information to reduce errors in a noisy, multipath environment.Type: GrantFiled: January 14, 2009Date of Patent: February 14, 2012Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Phong H. Ngo, Chau T. Phan, Julia A. Gross, Jianjun Ni, John Dusl
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Patent number: 6903685Abstract: System and methods are disclosed for passively determining the location of a moveable transmitter utilizing a pair of phase shifts at a receiver for extracting a direction vector from a receiver to the transmitter. In a preferred embodiment, a phase difference between the transmitter and receiver is extracted utilizing a noncoherent demodulator in the receiver. The receiver includes antenna array with three antenna elements, which preferably are patch antenna elements aced apart by one-half wavelength. Three receiver channels are preferably utilized for simultaneously processing the received signal from each of the three antenna elements. Multipath transmission paths for each of the three receiver channels are indexed so that comparisons of the same multipath component are made for each of the three receiver channels. The phase difference for each received signal is determined by comparing only the magnitudes of received and stored modulation signals to determine a winning modulation symbol.Type: GrantFiled: July 1, 2003Date of Patent: June 7, 2005Assignee: The United States of America as represented by the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Phong H. Ngo, Henry A. Chen, Chau T. Phan, Brian A. Bourgeois, John Dusl, Brent W. Hill
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Patent number: 6618010Abstract: System and methods are disclosed for passively determining the location of a moveable transmitter utilizing a pair of phase shifts at a receiver for extracting a direction vector from a receiver to the transmitter. In a preferred embodiment, a phase difference between the transmitter and receiver is extracted utilizing a noncoherent demodulator in the receiver. The receiver includes an antenna array with three antenna elements, which preferably are patch antenna elements spaced apart by one-half wavelength. Three receiver channels are preferably utilized for simultaneously processing the received signal from each of the three antenna elements. Multipath transmission paths for each of the three receiver channels are indexed so that comparisons of the same multipath component are made for each of the three receiver channels. The phase difference for each received signal is determined by comparing only the magnitudes of received and stored modulation signals to determine a winning modulation symbol.Type: GrantFiled: November 14, 2001Date of Patent: September 9, 2003Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Phong H. Ngo, Henry A. Chen, Chau T. Phan, Brian A. Bourgeois, John Dusl, Brent W. Hill
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Publication number: 20030103004Abstract: System and methods are disclosed for passively determining the location of a moveable transmitter utilizing a pair of phase shifts at a receiver for extracting a direction vector from a receiver to the transmitter. In a preferred embodiment, a phase difference between the transmitter and receiver is extracted utilizing a noncoherent demodulator in the receiver. The receiver includes an antenna array with three antenna elements, which preferably are patch antenna elements spaced apart by one-half wavelength. Three receiver channels are preferably utilized for simultaneously processing the received signal from each of the three antenna elements. Multipath transmission paths for each of the three receiver channels are indexed so that comparisons of the same multipath component are made for each of the three receiver channels. The phase difference for each received signal is determined by comparing only the magnitudes of received and stored modulation signals to determine a winning modulation symbol.Type: ApplicationFiled: November 14, 2001Publication date: June 5, 2003Inventors: G. Dickey Arndt, Phong H. Ngo, Henry A. Chen, Chau T. Phan, Brian A. Bourgeois, John Dusl, Brent W. Hill
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Patent number: 6559645Abstract: Transceiver and methods are included that are especially suitable for detecting metallic materials, such as metallic mines, within an environment. The transceiver includes a digital waveform generator used to transmit a signal into the environment and a receiver that produces a digital received signal. A tracking module preferably compares an in-phase and quadrature transmitted signal with an in-phase and quadrature received signal to produce a spectral transfer function of the magnetic transceiver over a selected range of frequencies. The transceiver initially preferably creates a reference transfer function which is then stored in a memory. Subsequently measured transfer functions will vary depending on the presence of metal in the environment which was not in the environment when the reference transfer function was determined. The system may be utilized in the presence of other antennas, metal, and electronics which may comprise a plastic mine detector for detecting plastic mines.Type: GrantFiled: October 30, 2001Date of Patent: May 6, 2003Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Phong H. Ngo, James R. Carl, Kent A. Byerly, John Dusl
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Publication number: 20020163346Abstract: Transceiver and methods are disclosed that are especially suitable for detecting metallic materials, such as metallic mines, within an environment. The transceiver includes a digital waveform generator used to transmit a signal into the environment and a receiver that produces a digital received signal. A tracking module preferably compares an in-phase and quadrature transmitted signal with an in-phase and quadrature received signal to produce a spectral transfer function of the magnetic transceiver over a selected range of frequencies. The transceiver initially preferably creates a reference transfer function which is then stored in a memory. Subsequently measured transfer functions will vary depending on the presence of metal in the environment which was not in the environment when the reference transfer function was determined. The system may be utilized in the presence of other antennas, metal, and electronics which may comprise a plastic mine detector for detecting plastic mines.Type: ApplicationFiled: October 30, 2001Publication date: November 7, 2002Inventors: G. Dickey Arndt, Phong H. Ngo, James R. Carl, Kent A. Byerly, John Dusl