Patents by Inventor Hemantha K. Wiekramasinghe

Hemantha K. Wiekramasinghe 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).

  • Patterned recording media and apparatus and method of manufacturing the same
    Publication number: 20040219445
    Abstract: A method for patterning a recording medium selectively thermally couples a recording medium and a heat source to alter a chemical composition of the recording medium. An apparatus for patterning a recording medium has a heat source for generating and directing an incident thermal wave to a recording medium so as to alter a chemical composition of the recording medium, and a controller for coordinating a mutual position of the incident thermal wave and the recording medium for inducing a direct thermal coupling between the recording medium and the heat source.
    Type: Application
    Filed: May 28, 2004
    Publication date: November 4, 2004
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Ernesto E. Marinero, Hemantha K. Wiekramasinghe