Patents by Inventor Maarten W. Steinmann

Maarten W. Steinmann 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
  • Electric lamp provided with a getter including palladium
    Patent number: 4894584
    Abstract: The electric lamp has a getter capable of binding hydrogen, oxygen and stoichiometrically water at a comparatively low temperature. The getter comprises Pd as a first metal, chemically bound to a second metal from the group Zr and Y, the mol. % of the first metal in the getter lying between 0.4 and 15. The getter further comprises chemically bound oxygen, mole 0/mole second metal being 0.02-1.0. The particle size is .ltoreq.40 .mu.m.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: January 16, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Maarten W. Steinmann, Wilhelmus A. A. A. Martens, Johannes J. G. S. A. Willems