Patents by Inventor Hoan Ho

Hoan Ho 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).

  • Dual cap layers for heat-assisted magnetic recording media
    Patent number: 9886977
    Abstract: A recording medium having improved signal-to-noise ratio (SNR) capabilities includes dual cap layers over the recording layer, where the Curie temperature of the first cap layer over the recording layer is greater than the Curie temperature of the recording layer, and the Curie temperature of the second cap layer over the first cap layer is greater than the Curie temperature of the first cap layer. The first cap layer may be composed of a magnetically hard material, such as L10 CoPt, where the second cap layer may be composed of a magnetically soft material, such as Co. Such a medium is particularly useful in the context of heat-assisted magnetic recording (HAMR).
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 6, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: Oleg Mryasov, Alan Kalitsov, Hoan Ho, Paul Dorsey, Gerardo Bertero