Patents by Inventor Patrick R. Irvin

Patrick R. Irvin 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: 11688539
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: June 27, 2023
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Jeremy Levy, Feng Bi, Patrick R. Irvin
  • Publication number: 20220084731
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Jeremy Levy, Feng Bi, Patrick R. Irvin
  • Patent number: 11205535
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: December 21, 2021
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Jeremy Levy, Feng Bi, Patrick R. Irvin
  • Publication number: 20200126705
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Application
    Filed: October 23, 2019
    Publication date: April 23, 2020
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Jeremy LEVY, Feng Bi, Patrick R. Irvin
  • Patent number: 10490331
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: November 26, 2019
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Jeremy Levy, Feng Bi, Patrick R. Irvin
  • Publication number: 20180075960
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second. layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Application
    Filed: November 7, 2017
    Publication date: March 15, 2018
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Jeremy LEVY, Feng BI, Patrick R. IRVIN
  • Patent number: 9852835
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: December 26, 2017
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Jeremy Levy, Feng Bi, Patrick R. Irvin
  • Publication number: 20160020382
    Abstract: A structure includes an electronically controllable ferromagnetic oxide structure that includes at least three layers. The first layer comprises STO. The second layer has a thickness of at least about 3 unit cells, said thickness being in a direction substantially perpendicular to the interface between the first and second layers. The third layer is in contact with either the first layer or the second layer or both, and is capable of altering the charge carrier density at the interface between the first layer and the second layer. The interface between the first and second layers is capable of exhibiting electronically controlled ferromagnetism.
    Type: Application
    Filed: July 16, 2015
    Publication date: January 21, 2016
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Jeremy LEVY, Feng Bi, Patrick R. Irvin