Patents Assigned to Nimbus Manufacturing (UK) Limited
  • 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