Patents by Inventor Hilmy Ahmad@Mohamad

Hilmy Ahmad@Mohamad 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).

  • Heating a head disk assembly for a time interval prior to writing spiral servo tracks to the disk
    Patent number: 7940487
    Abstract: A method of writing spiral servo tracks to a disk of a disk drive is disclosed. The disk is heated by applying a heating power to a heater for a time interval. After the time interval, the heating power is reduced, and the spiral servo tracks are written to the disk. In one embodiment, an external spiral servo writer comprises a heat lamp for heating an exterior surface of a head disk assembly (HDA) prior to writing spiral servo tracks to the disk.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Western Digital Technologies, Inc.
    Inventors: Puspanathan Krishnan, Anandan Vengadasalam, Hilmy Ahmad@Mohamad