Patents by Inventor Magdy F. Iskander
Magdy F. Iskander 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: 11219411Abstract: A system and method for monitoring lung water content of a patient. The system may include microwave sensors and a processor. The system may transmit microwave signals into, and receive microwave signals from, the thorax of a patient using the microwave sensors. The received microwave signals may each have at least one frequency component with a magnitude and a phase. The system may analyze the phase of the received microwave signal corresponding to a first pair of the microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of the received microwave signal corresponding to a second, different pair of the microwave sensors to determine whether the lung water content is increasing or decreasing. The system may also analyze the received microwave signals to determine a blood pressure indicator and to determine lung water content.Type: GrantFiled: February 11, 2016Date of Patent: January 11, 2022Assignee: University of HawaiiInventors: Magdy F. Iskander, Ruthsenne R. G. Perron
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Patent number: 10856806Abstract: A system and method for monitoring lung water content of a patient. The system may include at least two microwave sensors and a processor. The system may transmit one or more microwave signals into the thorax of a patient using one or more of the microwave sensors. The system may then receive one or more of the microwave signals using one or more of the microwave sensors. The one or more received microwave signals may each have at least one associated frequency component with a magnitude and a phase. The system may analyze the phase of one or more received microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of one or more received microwave signals to determine whether the lung water content is increasing or decreasing.Type: GrantFiled: August 17, 2015Date of Patent: December 8, 2020Inventors: Magdy F. Iskander, Ruthsenne R. G. Perron
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Patent number: 9526438Abstract: A microwave stethoscope measurement method and sensor design employ a microwave transmission sensor and a microwave reception sensor placed on a patient's chest in spaced-apart side-by-side configuration for monitoring patient vital signs, lung water content and other critical measurements. The side-by-side sensors are spaced apart a separation distance of about 1-3 cm in lateral chest orientation. The sensors may be formed with a textile fabric for wearer comfort and to improve contact with the patient's skin. The microwave sensor measurements are digitally processed using a modified short time Fourier Transform (STFT) spectrum windowed-averaged algorithm. Output data extracted from the microwave sensor measurements may be transmitted wirelessly to a mobile device such as a smartphone for remote monitoring of the patient's medical condition.Type: GrantFiled: April 25, 2014Date of Patent: December 27, 2016Assignee: University of HawaiiInventors: Magdy F. Iskander, Nuri Celik, Ruthsenne Gagarin, Gui Chao Huang, Darcy Alan Bibb
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Publication number: 20160310072Abstract: A system and method for monitoring lung water content of a patient. The system may include at least two microwave sensors and a processor. The system may transmit one or more microwave signals into the thorax of a patient using one or more of the microwave sensors. The system may then receive one or more of the microwave signals using one or more of the microwave sensors. The one or more received microwave signals may each have at least one associated frequency component with a magnitude and a phase. The system may analyze the phase of one or more received microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of one or more received microwave signals to determine whether the lung water content is increasing or decreasing.Type: ApplicationFiled: February 11, 2016Publication date: October 27, 2016Inventors: Magdy F. Iskander, Ruthsenne R.G. Perron
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Publication number: 20160235331Abstract: A system and method for monitoring lung water content of a patient. The system may include at least two microwave sensors and a processor. The system may transmit one or more microwave signals into the thorax of a patient using one or more of the microwave sensors. The system may then receive one or more of the microwave signals using one or more of the microwave sensors. The one or more received microwave signals may each have at least one associated frequency component with a magnitude and a phase. The system may analyze the phase of one or more received microwave signals to monitor changes in the lung water content. The system may analyze the magnitude of one or more received microwave signals to determine whether the lung water content is increasing or decreasing.Type: ApplicationFiled: August 17, 2015Publication date: August 18, 2016Inventors: Magdy F. Iskander, Ruthsenne R.G. Perron
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Publication number: 20140323823Abstract: A microwave stethoscope measurement method and sensor design employ a microwave transmission sensor and a microwave reception sensor placed on a patient's chest in spaced-apart side-by-side configuration for monitoring patient vital signs, lung water content and other critical measurements. The side-by-side sensors are spaced apart a separation distance of about 1-3 cm in lateral chest orientation. The sensors may be formed with a textile fabric for wearer comfort and to improve contact with the patient's skin. The microwave sensor measurements are digitally processed using a modified short time Fourier Transform (STFT) spectrum windowed-averaged algorithm. Output data extracted from the microwave sensor measurements may be transmitted wirelessly to a mobile device such as a smartphone for remote monitoring of the patient's medical condition.Type: ApplicationFiled: April 25, 2014Publication date: October 30, 2014Applicant: UNIVERSITY OF HAWAIIInventors: Magdy F. Iskander, Nuri Celik, Ruthsenne Gagarin, Gui Chao Huang, Darcy Alan Bibb
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Patent number: 8461851Abstract: A slotted TEM transmission line and an in-situ TEM transmission line are utilized to determine both complex permittivity and permeability of soil. The permittivity and permeability information may be used by underground sensing techniques such as GPR and EMI to enhance information from these techniques. The in-situ probe provides that both complex permittivity and permeability can be measured simultaneously over a broad frequency range without disturbing the soil conditions.Type: GrantFiled: April 9, 2010Date of Patent: June 11, 2013Assignee: University of HawaiiInventors: Magdy F. Iskander, Hyoungsun Youn, Charles Amazeen, Brian Burns
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Publication number: 20110169505Abstract: A slotted TEM transmission line and an in-situ TEM transmission line are utilized to determine both complex permittivity and permeability of soil. The permittivity and permeability information may be used by underground sensing techniques such as GPR and EMI to enhance information from these techniques. The in-situ probe provides that both complex permittivity and permeability can be measured simultaneously over a broad frequency range without disturbing the soil conditions.Type: ApplicationFiled: April 9, 2010Publication date: July 14, 2011Applicant: UNIVERSITY OF HAWAIIInventors: Magdy F. Iskander, Hyoungsun Youn, Charles Amazeen, Brian Burns
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Patent number: 7417587Abstract: A phase shifter comprises a substrate, a ground plane formed on a first surface of the substrate, a support structure positioned on a second surface of the substrate opposite the first surface, three parallel, non-co-planar microstrip lines supported by the support structure above the second surface of the substrate, a ferrite element supported by the support structure between the second surface of the substrate and the three non-co-planar microstrip lines, and means for applying a magnetic field to the ferrite element.Type: GrantFiled: January 19, 2006Date of Patent: August 26, 2008Assignee: Raytheon CompanyInventors: Magdy F. Iskander, Rory K. Sorensen, Jar J. Lee, Hee Kyung Kim
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Patent number: 7079082Abstract: An improved continuous transverse stub (CTS) antenna has coplanar waveguide (CPW) feed elements spaced apart aligned in parallel and mounted perpendicular to a planar substrate base made of a low dielectric material. A continuous transverse stub extends perpendicularly through a clearance gap in the CPW feed elements on the ground plane of the substrate base. The antenna is fed with a simple coplanar waveguide transmission line formed by the parallel CPW elements. The antenna employs the coplanar waveguide with CTS technology, preferably in a planar microstrip configuration, to produce a broadside radiation pattern with a maximum in the +z direction, perpendicular to the plane of the antenna. The CPW-CTS antenna offers the advantages of a broadside radiation pattern, low input impedance, high radiation efficiency, low fabrication cost, use of simple coaxial or microstrip transmission line feed, and simple integration with microstrip circuitry in a transceiver front-end.Type: GrantFiled: March 21, 2005Date of Patent: July 18, 2006Assignee: University of HawaiiInventors: Magdy F. Iskander, Wayne C. Kim, Jodie M. Bell
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Patent number: 6583394Abstract: Apparatus and a method for processing a ceramic material includes placing the ceramic material in a microwave heating apparatus having a microwave cavity; subjecting the ceramic material to a combination of microwave radiation and conventional heat; and controlling the uniformity of the processing of the ceramic material so as to avoid deformations and cracking by applying the microwave radiation to the ceramic material through at least one branched slotted waveguide which substantially uniformly distributes the microwave radiation throughout the microwave cavity.Type: GrantFiled: December 21, 2001Date of Patent: June 24, 2003Assignee: Corning IncorporatedInventors: Carlos R. Araya, Magdy F. Iskander, Elizabeth M. Vileno
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Publication number: 20020139795Abstract: Apparatus and a method for processing a ceramic material includes placing the ceramic material in a microwave heating apparatus having a microwave cavity; subjecting the ceramic material to a combination of microwave radiation and conventional heat; and controlling the uniformity of the processing of the ceramic material so as to avoid deformations and cracking by applying the microwave radiation to the ceramic material through at least one branched slotted waveguide which substantially uniformly distributes the microwave radiation throughout the microwave cavity.Type: ApplicationFiled: December 21, 2001Publication date: October 3, 2002Inventors: Carlos R. Araya, Magdy F. Iskander, Elizabeth M. Vileno
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Patent number: 6201509Abstract: A continuous transverse stub element array structure which forms a coaxial geometry formed from a plurality of cylindrical segments, wherein each of the cylindrical segments has a rim at a top end and a bottom end, wherein each rim extends transversely away from the cylindrical segment relative to a longitudinal axis thereof to thereby form a stub element, wherein the individual cylindrical transverse stub elements are aligned end-to-end to thereby form a coaxial cable structure which surrounds a central core material. The series of these stubs form reactive or radiating elements for microwave, millimeter-wave, and quasi-optical filters and antennas. Purely reactive elements are formed by leaving the conductive coating on the terminus of the stub elements, whereas radiating elements are formed when stub elements of moderate radius are opened to free space.Type: GrantFiled: November 5, 1999Date of Patent: March 13, 2001Assignee: University of Utah Research FoundationInventors: Zhijun Zhang, Magdy F. Iskander, Zhengqing Yun
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Patent number: 4510437Abstract: A novel apparatus and method for time-domain tracking of high-speed chemical reactions. The apparatus of the present invention includes an RF heating system for heating a reaction zone and a probe system in the reaction zone for measuring the complex permittivity in the reaction volume. A feedback system controls the RF source by adjusting the frequency of the RF source as a function of the relaxation frequency as determined by the permittivity measured by the probe system. Advantageously, the novel apparatus and method of this invention is particularly useful for RF dielectric heating to recover products from oil shales since it was found that the optimum RF frequency for heating oil shale changes rapidly as the kerogen is heated to elevated temperatures.Type: GrantFiled: July 29, 1983Date of Patent: April 9, 1985Assignee: University of UtahInventor: Magdy F. Iskander
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Patent number: 4396062Abstract: A novel apparatus and method for time-domain tracking of high-speed chemical reactions. The apparatus of this invention includes a feedback system for controlling the RF frequency of an RF radiator system to thereby provide the optimum RF frequency for heating the reaction. The apparatus and method of this invention are particularly useful in the recovery of products from oil shale wherein the oil shale is heated by RF dielectric heating and the feedback system adjusts the RF frequency as the permittivity of the oil shale changes during the heating process.Type: GrantFiled: October 6, 1980Date of Patent: August 2, 1983Assignee: University of Utah Research FoundationInventor: Magdy F. Iskander
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Patent number: 4240445Abstract: An apparatus and method for coupling electromagnetic energy into a dielectric material such as tissue while substantially reducing external leakage of the energy. The apparatus may also be used as a receiver for electromagnetic energy transmitted through tissue. The apparatus includes an open transmission line which is inherently non-radiating and may be configurated with a centrally disposed, central strip conductor. A ground plane conductor is placed in spaced relationship to the central strip conductor and on both sides of the central strip conductor. Alternatively, the central strip conductor may be placed in spaced relationship to one side of a ground plane conductor. The central strip conductor is terminated with a resistor of resistance equal to the characteristic impedance of the open transmission line.Type: GrantFiled: October 23, 1978Date of Patent: December 23, 1980Assignee: University of UtahInventors: Magdy F. Iskander, Carl H. Durney