Patents by Inventor John Ketterson

John Ketterson 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).

  • Multilayer structure with zirconium-oxide tunnel barriers and applications of same
    Patent number: 7977668
    Abstract: A multilayer structure with zirconium-oxide tunnel barriers. In one embodiment, the multilayer structure includes a first niobium (Nb) layer, a second niobium (Nb) layer, and a plurality of zirconium-oxide tunnel barriers sandwiched between the first niobium (Nb) layer and the second niobium (Nb) layer, wherein the plurality of zirconium-oxide tunnel barriers is formed with N layers of zirconium-oxide, N being an integer greater than 1, and M layers of zirconium, M being an integer no less than N, such that between any two neighboring layers of zirconium-oxide, a layer of zirconium is sandwiched therebetween.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: July 12, 2011
    Assignee: Northwestern University
    Inventors: Ivan Nevirkovets, John Ketterson, Oleksandr Chernyashevskyy, Serhii Shafraniuk
  • Multilayer structure with zirconium-oxide tunnel barriers and applications of same
    Publication number: 20090057652
    Abstract: A multilayer structure with zirconium-oxide tunnel barriers. In one embodiment, the multilayer structure includes a first niobium (Nb) layer, a second niobium (Nb) layer, and a plurality of zirconium-oxide tunnel barriers sandwiched between the first niobium (Nb) layer and the second niobium (Nb) layer, wherein the plurality of zirconium-oxide tunnel barriers is formed with N layers of zirconium-oxide, N being an integer greater than 1, and M layers of zirconium, M being an integer no less than N, such that between any two neighboring layers of zirconium-oxide, a layer of zirconium is sandwiched therebetween.
    Type: Application
    Filed: May 23, 2008
    Publication date: March 5, 2009
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Ivan NEVIRKOVETS, John KETTERSON, Oleksandr CHERNYASHEVSKYY, Serhii SHAFRANIUK