Patents by Inventor Denis W. J. Hazelden

Denis W. J. Hazelden 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).

  • Coating powder with valve-metal
    Patent number: 4353938
    Abstract: Powder is coated with valve-metal by rotating it in a drum 15 so that it is presented to valve-metal vapor derived by evaporation of a source of valve-metal. In the case of coating with aluminum, the vapor may be produced by directing aluminum wire 10 on to a heater 11, and oxygen or air is admitted to control agglomerate formation. Aluminum and tantalum coating are both described using electron beam evaporators.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: October 12, 1982
    Assignee: International Standard Electric Corporation
    Inventors: Henley F. Sterling, Eric L. Bush, Miles P. Drake, Denis W. J. Hazelden, Sarah Y. Hughes