Patents by Inventor Allen Joseph Bourez

Allen Joseph Bourez 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).

  • Heat-assisted magnetic recording (HAMR) medium with improved corrosion resistance
    Patent number: 10650854
    Abstract: A heat-assisted magnetic recording (HAMR) medium has a heat-sink layer, a chemically-ordered FePt (or CoPt) alloy magnetic layer and a MgNiO intermediate layer between the heat-sink layer and the magnetic layer. The intermediate layer is a solid substitution crystalline alloy of the form (Mg(100-y)Niy)O, where y is less than 10 and greater than or equal to 0.5. The magnetic layer may be formed directly on the MgNiO intermediate layer, in which case the MgNiO intermediate layer functions as both a seed layer and a thermal barrier layer. The HAMR medium may also include an optional layer of crystalline “pure” MgO directly below or directly above the MgNiO intermediate layer. If the MgO layer is located directly above the MgNiO intermediate layer then the MgNiO intermediate layer functions primarily as a thermal barrier layer. The HAMR medium with the MgNiO intermediate layer provides a substantial improvement in corrosion resistance.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: May 12, 2020
    Assignee: Western Digital Technologies, Inc.
    Inventors: Hua Yuan, Paul Christopher Dorsey, Fenghua Zong, Shahid Ali Pirzada, Allen Joseph Bourez, Zhaoqiang Bai