Patents by Inventor Ernald V. Williams

Ernald V. Williams 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).

  • Spectroscopy
    Patent number: 4177318
    Abstract: A graphite electrode for use in spectroscopic analysis in which at least the region of the electrode intended for contact with the material to be analyzed has a layer comprising the heat reaction product of graphite with a salt of a refractory metal and a salt of an alkali earth metal.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: December 4, 1979
    Assignee: British Steel Corporation
    Inventor: Ernald V. Williams