Patents by Inventor Bruce W. Wessels

Bruce W. Wessels 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).

  • Patent number: 11531124
    Abstract: Methods and devices for detecting incident radiation, such as incident X-rays, gamma-rays, and/or alpha particle radiation are provided. The methods and devices use high purity, high quality single-crystals of inorganic semiconductor compounds, including solid solutions, having the formula AB2X5, where A represents Tl or In, B represents Sn or Pb, and X represents Br or I, as photoelectric materials.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: December 20, 2022
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mercouri G. Kanatzidis, Bruce W. Wessels, Zhifu Liu, Wenwen Lin
  • Patent number: 11060184
    Abstract: Ferroelectric barium titanate (BaTiO3) epitaxial films grown by metal-organic chemical vapor deposition using a barium precursor having a low melting point and a stable vapor pressure.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: July 13, 2021
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Bruce W. Wessels, Young Kyu Jeong
  • Patent number: 10379230
    Abstract: Methods and devices for detecting incident radiation, such as incident x-rays or gamma-rays, are provided. The methods and devices use high purity, high quality single-crystals of inorganic semiconductor compounds having the formula A2P2X6, where A represents Pb or Sn and X represents S or Se, as photoelectric materials.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: August 13, 2019
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Mercouri G. Kanatzidis, Peng L. Wang, Bruce W. Wessels, Zhifu Liu
  • Publication number: 20190235096
    Abstract: Methods and devices for detecting incident radiation, such as incident X-rays, gamma-rays, and/or alpha particle radiation are provided. The methods and devices use high purity, high quality single-crystals of inorganic semiconductor compounds, including solid solutions, having the formula AB2X5, where A represents Tl or In, B represents Sn or Pb, and X represents Br or I, as photoelectric materials.
    Type: Application
    Filed: July 21, 2017
    Publication date: August 1, 2019
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Mercouri G. Kanatzidis, Bruce W. Wessels, Zhifu Liu, Wenwen Lin
  • Patent number: 10310181
    Abstract: Barium titanate thin film waveguides and related modulator and devices with photonic crystal structures to promote wide bandwidths, low operating voltages and small footprint.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: June 4, 2019
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Bruce W. Wessels, Zhifu Liu, Peter D. Girouard
  • Patent number: 10209323
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 19, 2019
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Publication number: 20180164447
    Abstract: Methods and devices for detecting incident radiation, such as incident x-rays or gamma-rays, are provided. The methods and devices use high purity, high quality single-crystals of inorganic semiconductor compounds having the formula A2P2X6, where A represents Pb or Sn and X represents S or Se, as photoelectric materials.
    Type: Application
    Filed: June 1, 2016
    Publication date: June 14, 2018
    Inventors: Mercouri G. Kanatzidis, Peng L. Wang, Bruce W. Wessels, Zhifu Liu
  • Publication number: 20170299811
    Abstract: Barium titanate thin film waveguides and related modulator and devices with photonic crystal structures to promote wide bandwidths, low operating voltages and small footprint.
    Type: Application
    Filed: April 17, 2017
    Publication date: October 19, 2017
    Inventors: Bruce W. Wessels, Zhifu Liu, Peter D. Girouard
  • Patent number: 9780791
    Abstract: A switch comprising a spin-transistor and a first control wire. The spin-transistor is configured so that when a magnetic field applied to the spin-transistor is less than a threshold value, the transistor is in a conductive state in which electric current flows through the spin-transistor. When the magnetic field applied to the spin-transistor is greater than the threshold value, the spin-transistor is in a resistive state in which the electric current flowing through the spin-transistor is substantially reduced. The first control wire is for receiving a current to affect the magnetic field applied to the spin-transistor.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: October 3, 2017
    Assignee: Northwestern University
    Inventors: Joseph S. Friedman, Gokhan Memik, Bruce W. Wessels
  • Publication number: 20170269172
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Application
    Filed: March 31, 2017
    Publication date: September 21, 2017
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 9612299
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: April 4, 2017
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Publication number: 20170029943
    Abstract: Ferroelectric barium titanate (BaTiO3) epitaxial films grown by metal-organic chemical vapor deposition using a barium precursor having a low melting point and a stable vapor pressure.
    Type: Application
    Filed: July 27, 2016
    Publication date: February 2, 2017
    Inventors: Bruce W. Wessels, Young Kyu Jeong
  • Publication number: 20160134287
    Abstract: A switch comprising a spin-transistor and a first control wire. The spin-transistor is configured so that when a magnetic field applied to the spin-transistor is less than a threshold value, the transistor is in a conductive state in which electric current flows through the spin-transistor. When the magnetic field applied to the spin-transistor is greater than the threshold value, the spin-transistor is in a resistive state in which the electric current flowing through the spin-transistor is substantially reduced. The first control wire is for receiving a current to affect the magnetic field applied to the spin-transistor.
    Type: Application
    Filed: January 18, 2016
    Publication date: May 12, 2016
    Inventors: Joseph S. Friedman, Gokhan Memik, Bruce W. Wessels
  • Patent number: 9270277
    Abstract: An emitter-coupled spin-transistor includes an emitter, a collector and a base. A first control wire receives an input current to create a magnetic field that affects amplification of the spin-transistor. A second transistor also includes an emitter, a collector and a base, where the emitter of the second transistor is coupled to the emitter of the spin-transistor to provide a logic circuit.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: February 23, 2016
    Assignee: Northwestern University
    Inventors: Joseph S. Friedman, Gokhan Memik, Bruce W. Wessels
  • Publication number: 20160018486
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Application
    Filed: May 5, 2015
    Publication date: January 21, 2016
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 9186103
    Abstract: Systems and methods can perform automatic computation developed using carbon nanotubes and graphene nanoribbons and/or InSb p-n bilayer channel avalanche diodes and wires. Spin logic can provide improvements in speed, power, and area, promising to be a high-performance logic family for the next generation of computing. The systems and methods can replace CMOS, for example, for general computing applications.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: November 17, 2015
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Joseph S. Friedman, Bruce W. Wessels, Alan V. Sahakian
  • Patent number: 9136398
    Abstract: In one aspect of the present invention, the semiconductor device is a bipolar magnetic junction transistor (MJT), and includes a first non-magnetic semiconductor layer, a second non-magnetic semiconductor layer, and a magnetic semiconductor layer. The first non-magnetic semiconductor layer has majority charge carriers of a first polarity. The second non-magnetic semiconductor layer is disposed adjacent to the first non-magnetic semiconductor layer such that a first junction is formed at a first interface region between the first non-magnetic semiconductor layer and the second non-magnetic semiconductor layer. The magnetic semiconductor layer has majority charge carriers of the first polarity, and is disposed adjacent to the second non-magnetic semiconductor layer such that a second junction is formed at a second interface region between the second non-magnetic semiconductor layer and the magnetic semiconductor layer.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 15, 2015
    Assignee: NORTHWESTERN UNIVERSITY
    Inventors: Bruce W. Wessels, Nikhil Rangaraju, John A. Peters
  • Patent number: 9024370
    Abstract: Ferromagnetic Group III-V semiconductor/non-magnetic Group III-V semiconductor heterojunctions, with a magnetodiode device, to detect heterojunction magnetoresistance responsive to an applied magnetic field.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 5, 2015
    Assignee: Northwestern University
    Inventors: Bruce W. Wessels, Steven J. May
  • Patent number: 8912821
    Abstract: In one aspect, the invention relates to logic cells that utilize one or more of spin diodes. By placing one or two control wires on the side of the spin diodes to generate magnetic fields in the spin diodes due to input currents, the logic cell can be changed from one logic gate to another logic gate. The unique feature leads to field logic devices in which simple instructions can be used to construct a whole new set of logic gates.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: December 16, 2014
    Assignee: Northwestern University
    Inventors: Joseph S. Friedman, Nikhil Rangaraju, Yehea Ismail, Bruce W. Wessels
  • Publication number: 20140361808
    Abstract: Systems and methods can perform automatic computation developed using carbon nanotubes and graphene nanoribbons and/or InSb p-n bilayer channel avalanche diodes and wires. Spin logic can provide improvements in speed, power, and area, promising to be a high-performance logic family for the next generation of computing. The systems and methods can replace CMOS, for example, for general computing applications.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 11, 2014
    Inventors: Joseph S. Friedman, Bruce W. Wessels, Alan V. Sahakian