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).

  • Publication number: 20230025426
    Abstract: 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: Application
    Filed: September 26, 2022
    Publication date: January 26, 2023
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
  • Patent number: 11547867
    Abstract: 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: Grant
    Filed: October 26, 2016
    Date of Patent: January 10, 2023
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
  • Patent number: 10931106
    Abstract: 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: Grant
    Filed: May 14, 2018
    Date of Patent: February 23, 2021
    Assignee: DynaPulse, L.L.C.
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Publication number: 20200383322
    Abstract: 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: Application
    Filed: April 9, 2020
    Publication date: December 10, 2020
    Inventors: David C. Jiles, Steffen Magnell
  • Patent number: 10792508
    Abstract: 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: Grant
    Filed: October 26, 2017
    Date of Patent: October 6, 2020
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Priyam Rastogi, Erik Gordon Lee, Magundappa Ravi L. Hadimani, David C. Jiles
  • Publication number: 20180342868
    Abstract: 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: Application
    Filed: May 14, 2018
    Publication date: November 29, 2018
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Patent number: 10110001
    Abstract: 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: Grant
    Filed: April 10, 2015
    Date of Patent: October 23, 2018
    Assignee: DynaPulsa, L.L.C.
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Publication number: 20180117352
    Abstract: 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: Application
    Filed: October 26, 2017
    Publication date: May 3, 2018
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Priyam Rastogi, Erik Gordon Lee, Magundappa Ravi L. Hadimani, David C. Jiles
  • Patent number: 9907865
    Abstract: 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: Grant
    Filed: October 24, 2016
    Date of Patent: March 6, 2018
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Magundappa Ravi L. Hadimani, Shalabh Gupta, Shane Harstad, Vitalij Pecharsky, David C. Jiles
  • Publication number: 20170295778
    Abstract: 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: Application
    Filed: March 6, 2017
    Publication date: October 19, 2017
    Inventors: David C. Jiles, Steffen Magnell
  • Publication number: 20170119909
    Abstract: 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: Application
    Filed: October 24, 2016
    Publication date: May 4, 2017
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Magundappa Ravi L. Hadimani, Shalabh Gupta, Shane Harstad, Vitalij Pecharsky, David C. Jiles
  • Publication number: 20170120065
    Abstract: 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: Application
    Filed: October 26, 2016
    Publication date: May 4, 2017
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: David C. Jiles, Magundappa Ravi L. Hadimani, Priyam Rastogi
  • Patent number: 9488537
    Abstract: 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: Grant
    Filed: May 23, 2011
    Date of Patent: November 8, 2016
    Assignee: AGUSTA WESTLAND S.P.A.
    Inventors: David C. Jiles, Lukasz Mierczak, Luigi Merletti, Gabriele Fantoni
  • Patent number: 9450425
    Abstract: 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: Grant
    Filed: March 15, 2013
    Date of Patent: September 20, 2016
    Assignee: DynaPulse, L.L.C.
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Publication number: 20150280433
    Abstract: 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: Application
    Filed: April 10, 2015
    Publication date: October 1, 2015
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Patent number: 9121371
    Abstract: 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: Grant
    Filed: March 15, 2013
    Date of Patent: September 1, 2015
    Assignee: DynaPulse, L.L.C.
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Patent number: 9006938
    Abstract: 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: Grant
    Filed: April 19, 2011
    Date of Patent: April 14, 2015
    Assignee: Dynapulse, L.L.C.
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Publication number: 20130116938
    Abstract: 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: Application
    Filed: May 23, 2011
    Publication date: May 9, 2013
    Applicant: Agustawestland S.p.A
    Inventors: Luigi Merletti, Gabriele Fantoni, Lukasz Mierczak, David C. Jiles
  • Publication number: 20110267121
    Abstract: 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: Application
    Filed: April 19, 2011
    Publication date: November 3, 2011
    Inventors: David C. Jiles, Steffen Magnell, Mani Mina
  • Patent number: 7326360
    Abstract: 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: Grant
    Filed: July 23, 2004
    Date of Patent: February 5, 2008
    Assignee: 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