Patents Examined by Ronald Smith
  • Method for the preparation of thin layers of tungsten and molybdenum
    Patent number: 3963839
    Abstract: Preparation of thin layers of tungsten or molybdenum on a highly temperature-resistant layer substrate by thermal evaporation in a high vacuum, where WO.sub.3 or MoO.sub.3, respectively, is evaporated and the layer substrate is heated so that the oxides are decomposed and a pure tungsten or molybdenum layer is deposited on the layer substrate.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: June 15, 1976
    Assignee: Siemens Aktiengesellschaft
    Inventor: Helmut Freller