Patents by Inventor Elsie Yang Chuang

Elsie Yang Chuang 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).

  • Magnetic recording medium with protective barrier layer
    Patent number: 6340521
    Abstract: A magnetic medium is formed with a barrier layer between the magnetic layer and protective overcoat to prevent degradation of magnetic properties during deposition of the protective overcoat due to poisoning effects by reactive gases on the magnetic layer. Embodiments include sputter depositing a Cr or Cr alloy barrier layer, having a thickness of about 5 Å to about 25 Å, on a magnetic layer and sputter depositing a protective overcoat containing carbon and nitrogen on the barrier layer in a nitrogen-containing environment.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: January 22, 2002
    Assignee: Seagate Technology LLC
    Inventors: Phuong Nguyen, Thanh Ha, Elsie Yang Chuang
  • Magnetic thin film medium with adhesion enhancement layer
    Patent number: 6139981
    Abstract: Adhesion between a deposited seed layer, e.g., a sputter-deposited NiP seed layer, on an alternate substrate, such as a glass, ceramic or glass-ceramic substrate, is significantly enhanced by depositing a chromium or chromium-alloy adhesion enhancement film between the substrate and seed layer. Magnetic recording media comprising a surface-oxidized NiP seed layer and chromium adhesion enhancement film exhibit low media noise and are suitable for high density longitudinal magnetic recording.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: October 31, 2000
    Assignee: Seagate Technology, Inc.
    Inventors: Elsie Yang Chuang, Phuong Nguyen, Qixu David Chen, Xing Song, Charles Leu, Thanh Thien Ha