Patents by Inventor David Vokoun

David Vokoun 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).

  • Perpendicular magnetic recording medium
    Patent number: 7601444
    Abstract: A perpendicular magnetic recording medium includes: a substrate; a soft magnetic film formed on the substrate; a non-magnetic film including an amorphous interlayer formed on the soft magnetic film and made from a metallic material selected from terbium, gadolinium, dysprosium, tantalum, hafnium, and combinations thereof, a buffer layer formed on the amorphous interlayer and having a face-centered cubic structure, and a seed layer formed on the buffer layer and having a hexagonal crystal structure; and a granular magnetic recording film formed on the seed layer.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: October 13, 2009
    Assignee: National Taiwan University
    Inventors: Chih-Huang Lai, David Vokoun, Yu-Yi Liao, Meng-Shian Lin
  • Perpendicular magnetic recording medium
    Publication number: 20070247756
    Abstract: A perpendicular magnetic recording medium includes: a substrate; a soft magnetic film formed on the substrate; a non-magnetic film including an amorphous interlayer formed on the soft magnetic film and made from a metallic material selected from terbium, gadolinium, dysprosium, tantalum, hafnium, and combinations thereof, a buffer layer formed on the amorphous interlayer and having a face-centered cubic structure, and a seed layer formed on the buffer layer and having a hexagonal crystal structure; and a granular magnetic recording film formed on the seed layer.
    Type: Application
    Filed: October 30, 2006
    Publication date: October 25, 2007
    Inventors: Chih-Huang Lai, David Vokoun, Yu-Yi Liao, Meng-Shian Lin