Patents by Inventor Petronella C. M. Baken

Petronella C. M. Baken 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).

  • Electric lamp having a coated external current conductor
    Patent number: 6265817
    Abstract: The electric lamp comprises a lamp vessel (1) and an electric element (4). The electric element is electrically connected to the exterior via a current feed-through comprising an external current conductor (7). By covering the external current conductor with a protective coating (8) contains chromium which can react with SiO2 to form low-melting phases, the lifetime of the lamp is increased significantly.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: July 24, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Maarten W. Steinmann, Petronella C. M. Baken