Patents by Inventor David C. Jiles
David C. Jiles 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: 20230025426Abstract: A coil configuration and method for transcranial magnetic stimulation enabling stimulation of deep regions of the brain without excessively stimulating the cortex is provided. The coil configuration utilizes at least one coil to produce an off-plane magnetic field to enhance the magnetic field from a top TMS coil. In one configuration at least a single variable position coil referred to as the Variable Halo Coil and positionable vertically and/or angularly is used.Type: ApplicationFiled: September 26, 2022Publication date: January 26, 2023Applicant: Iowa State University Research Foundation, Inc.Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
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Patent number: 11547867Abstract: A coil configuration and method for transcranial magnetic stimulation enabling stimulation of deep regions of the brain without excessively stimulating the cortex is provided. The coil configuration utilizes at least one coil to produce an off-plane magnetic field to enhance the magnetic field from a top TMS coil. In one configuration three coils, referred to as the Triple Halo Coil and oriented at +30°, 0°, and ?30° relative to the plane of the TMS coil, are used. In another configuration a single variable position coil referred to as the Variable Halo Coil and positionable vertically and/or angularly is used.Type: GrantFiled: October 26, 2016Date of Patent: January 10, 2023Assignee: Iowa State University Research Foundation, Inc.Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
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Patent number: 10931106Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: GrantFiled: May 14, 2018Date of Patent: February 23, 2021Assignee: DynaPulse, L.L.C.Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Publication number: 20200383322Abstract: Embodiments include exposing blood to a pulsed magnetic field. Embodiments include exposing blood to a pulsed magnetic field as a means of improving blood viscosity management, blood oxygenation, and banked blood shelf life. Various other embodiments are also included herein.Type: ApplicationFiled: April 9, 2020Publication date: December 10, 2020Inventors: David C. Jiles, Steffen Magnell
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Patent number: 10792508Abstract: Provided herein are embodiments of a Quadruple Butterfly Coil (QBC) configuration having enhanced focality for stimulation of specific areas of a brain for therapeutic treatment. Finite element simulations were conducted for the QBC, the QBC with a single shield, and the QBC with a double shield. The stimulation profiles for these coil configurations were assessed with 50 anatomically realistic MRI derived head models. The coils were positioned on the vertex and the scalp over the dorsolateral prefrontal cortex to stimulate the brain. Computer modeling of the coils was performed to determine volume of stimulation, maximum electric field, location of maximum electric field, and area of stimulation across all 50 head models for both coils.Type: GrantFiled: October 26, 2017Date of Patent: October 6, 2020Assignee: Iowa State University Research Foundation, Inc.Inventors: Priyam Rastogi, Erik Gordon Lee, Magundappa Ravi L. Hadimani, David C. Jiles
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Publication number: 20180342868Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: ApplicationFiled: May 14, 2018Publication date: November 29, 2018Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Patent number: 10110001Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: GrantFiled: April 10, 2015Date of Patent: October 23, 2018Assignee: DynaPulsa, L.L.C.Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Publication number: 20180117352Abstract: Provided herein are embodiments of a Quadruple Butterfly Coil (QBC) configuration having enhanced focality for stimulation of specific areas of a brain for therapeutic treatment. Finite element simulations were conducted for the QBC, the QBC with a single shield, and the QBC with a double shield. The stimulation profiles for these coil configurations were assessed with 50 anatomically realistic MRI derived head models. The coils were positioned on the vertex and the scalp over the dorsolateral prefrontal cortex to stimulate the brain. Computer modeling of the coils was performed to determine volume of stimulation, maximum electric field, location of maximum electric field, and area of stimulation across all 50 head models for both coils.Type: ApplicationFiled: October 26, 2017Publication date: May 3, 2018Applicant: Iowa State University Research Foundation, Inc.Inventors: Priyam Rastogi, Erik Gordon Lee, Magundappa Ravi L. Hadimani, David C. Jiles
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Patent number: 9907865Abstract: A particle usable as T1 and T2 contrast agents is provided. The particle is a gadolinium silicide (Gd5Si4) particle that is ferromagnetic at temperatures up to 290 K and is less than 2 ?m in diameter. An MRI contrast agent that includes a plurality of gadolinium silicide (Gd5Si4) particles that are less than 1 ?m in diameter is also provided. A method for creating gadolinium silicide (Gd5Si4) particles is also provided. The method includes the steps of providing a Gd5Si4 bulk alloy; grinding the Gd5Si4 bulk alloy into a powder; and milling the Gd5Si4 bulk alloy powder for a time of approximately 20 minutes or less.Type: GrantFiled: October 24, 2016Date of Patent: March 6, 2018Assignee: Iowa State University Research Foundation, Inc.Inventors: Magundappa Ravi L. Hadimani, Shalabh Gupta, Shane Harstad, Vitalij Pecharsky, David C. Jiles
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Publication number: 20170295778Abstract: Embodiments include exposing blood to a pulsed magnetic field. Embodiments include exposing blood to a pulsed magnetic field as a means of improving blood viscosity management, blood oxygenation, and banked blood shelf life. Various other embodiments are also included herein.Type: ApplicationFiled: March 6, 2017Publication date: October 19, 2017Inventors: David C. Jiles, Steffen Magnell
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Publication number: 20170119909Abstract: A particle usable as T1 and T2 contrast agents is provided. The particle is a gadolinium silicide (Gd5Si4) particle that is ferromagnetic at temperatures up to 290 K and is less than 2 ?m in diameter. An MRI contrast agent that includes a plurality of gadolinium silicide (Gd5Si4) particles that are less than 1 ?m in diameter is also provided. A method for creating gadolinium silicide (Gd5Si4) particles is also provided. The method includes the steps of providing a Gd5Si4 bulk alloy; grinding the Gd5Si4 bulk alloy into a powder; and milling the Gd5Si4 bulk alloy powder for a time of approximately 20 minutes or less.Type: ApplicationFiled: October 24, 2016Publication date: May 4, 2017Applicant: Iowa State University Research Foundation, Inc.Inventors: Magundappa Ravi L. Hadimani, Shalabh Gupta, Shane Harstad, Vitalij Pecharsky, David C. Jiles
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Publication number: 20170120065Abstract: A coil configuration and method for transcranial magnetic stimulation enabling stimulation of deep regions of the brain without excessively stimulating the cortex is provided. The coil configuration utilizes at least one coil to produce an off-plane magnetic field to enhance the magnetic field from a top TMS coil. In one configuration three coils, referred to as the Triple Halo Coil and oriented at +30°, 0°, and ?30° relative to the plane of the TMS coil, are used. In another configuration a single variable position coil referred to as the Variable Halo Coil and positionable vertically and/or angularly is used.Type: ApplicationFiled: October 26, 2016Publication date: May 4, 2017Applicant: Iowa State University Research Foundation, Inc.Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
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Patent number: 9488537Abstract: The present system determines a significant stress value (?) of a component made of magnetizable material. The system has a generating stage for generating a magnetic field of varying amplitude (H); and also includes a pickup stage for acquiring a Barkhausen noise signal (MBN) alongside variations in the amplitude (H) of the magnetic field. The system is characterized by having a processing unit for calculating the reciprocal (1/MBNmax) of the maximum value (MBNmax) of the signal (MBN), alongside variations in the amplitude (H) of the magnetic field. The processing unit has a memory stage storing a linear relation between the reciprocal (1/MBNmax) of the maximum value and the significant stress value (?).Type: GrantFiled: May 23, 2011Date of Patent: November 8, 2016Assignee: AGUSTA WESTLAND S.P.A.Inventors: David C. Jiles, Lukasz Mierczak, Luigi Merletti, Gabriele Fantoni
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Patent number: 9450425Abstract: A system and method for altering the properties of a battery by exposure of the battery to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a battery to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the performance of a battery is provided, comprising: providing a battery; temporarily installing a magnetic field generator along at least a portion of the battery; and generating a pulsed magnetic field around at least a portion of the battery using the magnetic field generator and simultaneously running a current through the battery.Type: GrantFiled: March 15, 2013Date of Patent: September 20, 2016Assignee: DynaPulse, L.L.C.Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Publication number: 20150280433Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: ApplicationFiled: April 10, 2015Publication date: October 1, 2015Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Patent number: 9121371Abstract: A system and method for altering the properties of a fuel by exposure of the fuel to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the fuel properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the performance of a fuel is provided, comprising: providing a fuel line comprising fuel; installing a magnetic field generator along at least a portion of the fuel line; and generating a pulsed magnetic field around at least a portion of the fuel line using the magnetic field generator.Type: GrantFiled: March 15, 2013Date of Patent: September 1, 2015Assignee: DynaPulse, L.L.C.Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Patent number: 9006938Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: GrantFiled: April 19, 2011Date of Patent: April 14, 2015Assignee: Dynapulse, L.L.C.Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Publication number: 20130116938Abstract: The present system determines a significant stress value (?) of a component made of magnetizable material. The system has a generating stage for generating a magnetic field of varying amplitude (H); and also includes a pickup stage for acquiring a Barkhausen noise signal (MBN) alongside variations in the amplitude (H) of the magnetic field. The system is characterized by having a processing unit for calculating the reciprocal (1/MBNmax) of the maximum value (MBNmax) of the signal (MBN), alongside variations in the amplitude (H) of the magnetic field. The processing unit has a memory stage storing a linear relation between the reciprocal (1/MBNmax) of the maximum value and the significant stress value (?).Type: ApplicationFiled: May 23, 2011Publication date: May 9, 2013Applicant: Agustawestland S.p.AInventors: Luigi Merletti, Gabriele Fantoni, Lukasz Mierczak, David C. Jiles
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Publication number: 20110267121Abstract: A system and method for altering the properties of a material by exposure of the material to a magnetic field is described herein. The method comprises generating a magnetic field; exposing a material to the magnetic field, and determining the optimum settings of the magnetic field parameters for the particular material. The magnetic field may be time varying or time invariant. Various properties of the magnetic field can be altered to determine the optimum settings for altering the material properties, including the amplitude, frequency, and waveform. In one embodiment, a method for improving the conductivity of a transmission line is provided, comprising: providing a high voltage electrical transmission line; temporarily installing a magnetic field generator along at least a portion of the transmission line; and generating a pulsed magnetic field around at least a portion of the transmission line using the magnetic field generator and simultaneously running a current through the transmission line.Type: ApplicationFiled: April 19, 2011Publication date: November 3, 2011Inventors: David C. Jiles, Steffen Magnell, Mani Mina
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Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications
Patent number: 7326360Abstract: Magnetostrictive material based on cobalt ferrite is described. The cobalt ferrite is substituted with transition metals (such manganese (Mn), chromium (Cr), zinc (Zn) and copper (Cu) or mixtures thereof) by substituting the transition metals for iron or cobalt to form substituted cobalt ferrite that provides mechanical properties that make the substituted cobalt ferrite material effective for use as sensors and actuators. The substitution of transition metals lowers the Curie temperature of the material (as compared to cobalt ferrite) while maintaining a suitable magnetostriction for stress sensing applications.Type: GrantFiled: July 23, 2004Date of Patent: February 5, 2008Assignee: Iowa State University Research Foundation, Inc.Inventors: David C. Jiles, Jason A. Paulsen, John E. Snyder, Chester C. H. Lo, Andrew P. Ring, Keith A. Bormann