Patents by Inventor Paul Vedamuttu

Paul Vedamuttu 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).

  • Manufacture of optical data storage disc
    Patent number: 6165391
    Abstract: A method and apparatus forming a micro-relief pattern on a surface of an optical disc, which micro-relief pattern may form a holographic image in which a shim bearing a micro-relief pattern is pressed onto the surface of the disc and the apparatus used ensures that a greater force is applied to the periphery of the disc and the remainder of the surface on which it is desired to form the micro-relief pattern, such method and apparatus enables a satisfactory relief pattern to be formed over a substantial area of the surface of the disc.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: December 26, 2000
    Assignee: Nimbus Manufacturing (UK) Limited
    Inventor: Paul Vedamuttu