Patents by Inventor Thomas E. Stewart, Jr.

Thomas E. Stewart, Jr. 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: 7755389
    Abstract: Reconfigurable electronic structures and circuits using programmable, non-volatile memory elements. The programmable, non-volatile memory elements may perform the functions of storage and/or a switch to produce components such as crossbars, multiplexers, look-up tables (LUTs) and other logic circuits used in programmable logic structures (e.g., (FPGAs)). The programmable, non-volatile memory elements comprise one or more structures based on Phase Change Memory, Programmable Metallization, Carbon Nano-Electromechanical (CNT-NEM), or Metal Nano-Electromechanical device technologies.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: July 13, 2010
    Assignee: Agate Logic, Inc.
    Inventors: Colin Neal Murphy, Narbeh Derhacobian, Louis Charles Kordus, II, Antonietta Oliva, Vei-Han Chan, Thomas E. Stewart, Jr.
  • Patent number: 7696018
    Abstract: Phase change devices, and particularly multi-terminal phase change devices, include first and second active terminals bridged together by a phase-change material whose conductivity can be modified in accordance with a control signal applied to a control electrode. This structure allows an application in which an electrical connection can be created between the two active terminals, with the control of the connection being effected using a separate terminal or terminals. Accordingly, the resistance of the heater element can be increased independently from the resistance of the path between the two active terminals. This allows the use of smaller heater elements thus requiring less current to create the same amount of Joule heating per unit area. The resistance of the heating element does not impact the total resistance of the phase change device.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: April 13, 2010
    Assignee: Agate Logic, Inc.
    Inventors: Antonietta Oliva, Louis Charles Kordus, II, Narbeh Derharcobian, Vei-Han Chan, Thomas E. Stewart, Jr.
  • Publication number: 20090134910
    Abstract: Reconfigurable electronic structures and circuits using programmable, non-volatile memory elements. The programmable, non-volatile memory elements may perform the functions of storage and/or a switch to produce components such as crossbars, multiplexers, look-up tables (LUTs) and other logic circuits used in programmable logic structures (e.g., (FPGAs)). The programmable, non-volatile memory elements comprise one or more structures based on Phase Change Memory, Programmable Metallization, Carbon Nano-Electromechanical (CNT-NEM), or Metal Nano-Electromechanical device technologies.
    Type: Application
    Filed: January 7, 2009
    Publication date: May 28, 2009
    Inventors: Colin Neal Murphy, Narbeh Derhacobian, Louis Charles Kordus, II, Antonietta Oliva, Vei-Han Chan, Thomas E. Stewart, JR.
  • Patent number: 7494849
    Abstract: Phase change devices, and particularly multi-terminal phase change devices, include first and second active terminals bridged together by a phase-change material whose conductivity can be modified in accordance with a control signal applied to a control electrode. This structure allows an application in which an electrical connection can be created between the two active terminals, with the control of the connection being effected using a separate terminal or terminals. Accordingly, the resistance of the heater element can be increased independently from the resistance of the path between the two active terminals. This allows the use of smaller heater elements thus requiring less current to create the same amount of Joule heating per unit area. The resistance of the heating element does not impact the total resistance of the phase change device.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: February 24, 2009
    Assignee: Cswitch Inc.
    Inventors: Antonietta Oliva, Louis Charles Kordus, II, Narbeh Derharcobian, Vei-Han Chan, Thomas E. Stewart, Jr.