Patents by Inventor Andrew J. Trunek

Andrew J. Trunek 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: 7449065
    Abstract: A method and the benefits resulting from the product thereof are disclosed for the growth of large, low-defect single-crystals of tetrahedrally-bonded crystal materials. The process utilizes a uniquely designed crystal shape whereby the direction of rapid growth is parallel to a preferred crystal direction. By establishing several regions of growth, a large single crystal that is largely defect-free can be grown at high growth rates. This process is particularly suitable for producing products for wide-bandgap semiconductors, such as SiC, GaN, AlN, and diamond. Large low-defect single crystals of these semiconductors enable greatly enhanced performance and reliability for applications involving high power, high voltage, and/or high temperature operating conditions.
    Type: Grant
    Filed: December 2, 2006
    Date of Patent: November 11, 2008
    Assignee: Ohio Aerospace Institute
    Inventors: J. Anthony Powell, Philip G. Neudeck, Andrew J. Trunek, David J. Spry