Patents by Inventor Stephen John Hellier

Stephen John Hellier 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).

  • Getter pump
    Patent number: 3961897
    Abstract: A getter pump comprising two getter elements wherein the first getter element comprises a metallic substrate having a nonevaporable getter metal embedded therein. The second getter element employs a getter metal having a lower hydrogen equilibrium vapor pressure than that of the first getter element.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: June 8, 1976
    Assignee: S.A.E.S. Getters S.p.A.
    Inventors: Tiziano A. Giorgi, Stephen John Hellier