Patents Examined by Martin Aiugebranndt
  • Optical recording media
    Patent number: 5234803
    Abstract: Optical recording films made from alloys of antimony-tin and a third element exhibit improved properties when formed in an atmosphere containing nitrogen. The amount of nitrogen in the sputtering environment is controlled. Improvements include higher amorphous to crystalline transition temperature and greater stability of the recorded and unrecorded film.
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventor: Pranab K. Raychaudhuri