Patents by Inventor Christopher R. McWilliams

Christopher R. McWilliams 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: 20220199631
    Abstract: Non-volatile memory devices utilizing polarizable ferroelectric-semiconductor materials as the floating gate in floating-gate field-effect metal oxide transistors are described. Such materials can be annealed at temperatures less than 450° C., and fields below about 250 kV/cm can be used for changing polarization of the ferroelectric semiconductor materials, leading to devices capable of high endurance (>1010 cycles).
    Type: Application
    Filed: December 21, 2021
    Publication date: June 23, 2022
    Applicant: Advanced Nanoscale Devices
    Inventors: Carlos A. Paz de Araujo, Jolanta B. Celinska, Christopher R. McWilliams, Jason E. Nobles
  • Patent number: 9722179
    Abstract: A resistive switching memory comprising a first electrode and a second electrode; an active resistive switching region between the first electrode and the second electrode, the resistive switching region comprising a transition metal oxide and a dopant comprising a ligand, the dopant having a first concentration; a first buffer region between the first electrode and the resistive switching material, the first buffer region comprising the transition metal oxide and the dopant, wherein the dopant has a second concentration that is greater than the first concentration. In one embodiment, the second concentration is twice the first concentration. In one embodiment, the first buffer region is thicker than the active resistive switching region.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: August 1, 2017
    Assignee: Symetrix Memory, LLC
    Inventors: Carlos A. Paz de Araujo, Jolanta Celinska, Christopher R. McWilliams
  • Publication number: 20160163978
    Abstract: A resistive switching memory comprising a first electrode and a second electrode; an active resistive switching region between the first electrode and the second electrode, the resistive switching region comprising a transition metal oxide and a dopant comprising a ligand, the dopant having a first concentration; a first buffer region between the first electrode and the resistive switching material, the first buffer region comprising the transition metal oxide and the dopant, wherein the dopant has a second concentration that is greater than the first concentration. In one embodiment, the second concentration is twice the first concentration. In one embodiment, the first buffer region is thicker than the active resistive switching region.
    Type: Application
    Filed: November 10, 2015
    Publication date: June 9, 2016
    Inventors: Carlos A. Paz de Araujo, Jolanta Celinska, Christopher R. McWilliams