Patents by Inventor Ian J. H. Sweet

Ian J. H. Sweet 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).

  • Cathodoluminescent light sources and electric lighting arrangements including such sources
    Patent number: 4506194
    Abstract: In a cathodoluminescent lamp of the type having an electrically conductive coating forms the anode on the interior surface of the bulb wall, a phosphor coating overlies the anode coating and an electron emissive cathode below a grid, the lead to the anode passes through a glass tube, additional to the exhaust tube, incorporated in the pinched foot tube, and is sealed through the pinch, and the contact between the anode lead and the anode coating on the bulb is provided by a bent metal strip attached to envelope the neck and partially covered by the anode coating, which extends partly down the neck, the end of the anode lead being engaged with an upstanding portion of the contact strip.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: March 19, 1985
    Assignee: The General Electric Company p.l.c.
    Inventors: Sydney A. R. Rigden, Ian J. H. Sweet