Patents by Inventor Ezekiel Johnston-Halperin

Ezekiel Johnston-Halperin 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).

  • Bipolar spin transistors and the applications of the same
    Patent number: 7719071
    Abstract: A bipolar spin transistor is provided. In one embodiment of the present invention, the bipolar spin transistor includes a first semiconductor region having a first conductivity type, a second semiconductor region having a second conductivity type that is different from the first conductivity type and also having a spin polarization, and a third semiconductor region having a conductivity type that is the same conductivity type of the first semiconductor region. The first semiconductor region and the second semiconductor region are adjacent to each other so as to form a first charge depletion layer therebetween, the first charge depletion layer having a first side facing the first semiconductor region and an opposing second side facing the second semiconductor region.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: May 18, 2010
    Assignee: University of iowa Research Foundation
    Inventors: Michael Edward Flatté, Zhi Gang Yu, Ezekiel Johnston-Halperin, David Awschalom