Patents by Inventor Ilia Valov

Ilia Valov 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: 11111587
    Abstract: Disclosed is a biphasic electrically conductive perovskite-based mixed oxide of the structure ABO3 with A=Ba, and B=Co, comprising additionally 5-45 at %, preferably 15 to 30 at %, particularly preferably 25 at % Co3O4 (at % Co based on the total number of Co atoms in the perovskite ABO3 and 0.5 to 0.3 at %, preferably 1 to 2.5 at %, particularly preferably 2 at % (wherein the at % are referred to the total number of B cations in the perovskite ABO3) Ti as dopant. Preferably, the mixed oxide has the stoichiometric formula BaCo1?xTixO3??:Co3O4 with x=0.005 to 0.03, preferably x=0.01 to 0.025, particularly preferably x=0.02, wherein ? defines the vacancies in the perovskite structure and is in the range of about 0.1 to 0.8, preferably 0.3 to 0.7, particularly preferably about 0.5 to 0.6.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 7, 2021
    Assignee: Forschungszentrum Jülich GmbH
    Inventors: Daniel Bick, Ilia Valov, Theodor Schneller, Rainer Waser
  • Publication number: 20200040473
    Abstract: Disclosed is a biphasic electrically conductive perovskite-based mixed oxide of the structure ABO3 with A=Ba, and B=Co, comprising additionally 5-45 at %, preferably 15 to 30 at %, particularly preferably 25 at % Co3O4 (at % Co based on the total number of Co atoms in the perovskite ABO3 and 0.5 to 3 at %, preferably 1 to 2.5 at %, particularly preferably 2 at % (wherein the at % are referred to the total number of B cations in the perovskite ABO3) Ti as dopant. Preferably, the mixed oxide has the stoichiometric formula BaCo1?xTixO3??:Co3O4 with x=0.005 to 0.03, preferably x=0.01 to 0.025, particularly preferably x=0.02, wherein ? defines the vacancies in the perovskite structure and is in the range of about 0.1 to 0.8, preferably 0.3 to 0.7, particularly preferably about 0.5 to 0.6.
    Type: Application
    Filed: March 28, 2018
    Publication date: February 6, 2020
    Inventors: Daniel Bick, Ilia Valov, Theodor Schneller, Rainer Waser
  • Patent number: 9865343
    Abstract: A method for reading out a resistive memory cell comprising two electrodes that are spaced from each other by an ion-conducting resistive material was developed, the memory cells being transferrable from a stable state having a higher resistance value (high resistive state, HRS) to a stable state having a lower resistance value (low resistive state, LRS) when a write voltage is applied.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: January 9, 2018
    Assignees: Forschungszentrum Juelich GmbH, Rheinisch-Westfaelische Technische Hochschule
    Inventors: Jan Van Den Hurk, Elke Linn, Rainer Waser, Ilia Valov
  • Publication number: 20170162260
    Abstract: A method for reading out a resistive memory cell comprising two electrodes that are spaced from each other by an ion-conducting resistive material was developed, the memory cells being transferrable from a stable state having a higher resistance value (high resistive state, HRS) to a stable state having a lower resistance value (low resistive state, LRS) when a write voltage is applied.
    Type: Application
    Filed: October 29, 2014
    Publication date: June 8, 2017
    Inventors: Jan VAN DEN HURK, Elke LINN, Rainer WASER, Ilia VALOV
  • Patent number: 9443589
    Abstract: A method for reading out a non-volatile memory element having at least two stable states 0 and 1. This memory element comprises at least one resistive memory cell, which encodes the two states 0 and 1 into a state HRS having higher electrical resistance and a state LRS having lower electrical resistance. In the two states 0 and 1, the memory element has differing capacitances C0,1; this difference is used to determine which state is present. A memory element is selected in which a fixed capacitance that is independent of the state of the memory cell is connected in series with the memory cell. A series connection of a resistive memory cell with a fixed capacitance, instead of with a second resistive memory cell, improves the signal strength during capacitive read-out. The second memory cell becomes indispensable for the memory function when the memory element is read out capacitively.
    Type: Grant
    Filed: May 17, 2014
    Date of Patent: September 13, 2016
    Assignees: Forschungszentrum Juelich GmbH, Rheinisch-Westfaelische Technisque Hochschule (RWTH) Aachen
    Inventors: Stefan Tappertzhofen, Eike Linn, Lutz Nielen, Rainer Waser, Ilia Valov
  • Publication number: 20160111152
    Abstract: A method for reading out a non-volatile memory element having at least two stable states 0 and 1. This memory element comprises at least one resistive memory cell, which encodes the two states 0 and 1 into a state HRS having higher electrical resistance and a state LRS having lower electrical resistance. In the two states 0 and 1, the memory element has differing capacitances C0,1; this difference is used to determine which state is present. A memory element is selected in which a fixed capacitance that is independent of the state of the memory cell is connected in series with the memory cell. A series connection of a resistive memory cell with a fixed capacitance, instead of with a second resistive memory cell, improves the signal strength during capacitive read-out. The second memory cell becomes indispensable for the memory function when the memory element is read out capacitively.
    Type: Application
    Filed: May 17, 2014
    Publication date: April 21, 2016
    Inventors: Stefan TAPPERTZHOFEN, Eike LINN, Lutz NIELEN, Rainer WASER, Ilia VALOV
  • Patent number: 9001558
    Abstract: A method for reading out a memory element comprises a series connection. of at least two memory cells A and B each have a stable state A0 or B0 having higher resistance and a stable state A1 or B1 having lower electrical resistance. An electrical variable of the series circuit is measured and an electrical variable is selected for this measurement, to which the memory cell A in state A0 makes a different contribution than the memory cell B in state B0 and/or to which the memory cell A instate A1 makes a different contribution than the memory cell B in state B1. The two state combinations A1 and B0 or A0 and B1 then result in differing values for the electrical variable that is measured by way of the series circuit. These state combinations can thus be distinguished from each other without having to change the logic state of the memory element during reading.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: April 7, 2015
    Assignees: Forschungszentrum Juelich GmbH, Rheinisch-Westfaelische Technische Hochschule Aachen (RWTH)
    Inventors: Roland Daniel Rosezin, Florian Lentz, Rainer Bruchhaus, Eike Linn, Ilia Valov, Rainer Waser, Stefan Tappertzhofen, Lutz Nielen
  • Publication number: 20140036574
    Abstract: A method for reading out a memory element comprises a series connection. of at least two memory cells A and B each have a stable state A0 or B0 having higher resistance and a stable state A1 or B1 having lower electrical resistance. An electrical variable of the series circuit is measured and an electrical variable is selected for this measurement, to which the memory cell A in state A0 makes a different contribution than the memory cell B in state B0 and/or to which the memory cell A instate A1 makes a different contribution than the memory cell B in state B1. The two state combinations A1 and B0 or A0 and B1 then result in differing values for the electrical variable that is measured by way of the series circuit. These state combinations can thus be distinguished from each other without having to change the logic state of the memory element during reading.
    Type: Application
    Filed: February 3, 2012
    Publication date: February 6, 2014
    Applicant: Forschungszentrum Juelich GmbH
    Inventors: Roland Daniel Rosezin, Florian Lentz, Rainer Bruchhaus, Eike Linn, Ilia Valov, Rainer Waser, Stefan Tappertzhofen, Lutz Nielen