Patents by Inventor Seidikkurippu N. Piramanayagam

Seidikkurippu N. Piramanayagam 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).

  • Method of producing a magnetic recording medium
    Patent number: 6699332
    Abstract: A method of producing a magnetic recording medium comprising the steps of providing a substrate having a layer of a non-magnetic material that can be converted into a magnetic state by annealing, and then converting selected portions of the non-magnetic layer to a magnetic state by subjecting them to annealing by directing a focussed beam of radiation onto the substrate to form a patterned magnetic layer comprising an ordered array of magnetic regions separated by non-magnetic regions.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: March 2, 2004
    Assignee: Data Storage Institute
    Inventors: Seidikkurippu N. Piramanayagam, Jian Ping Wang