Patents by Inventor Ulrich Rosner

Ulrich Rosner 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).

  • High-pressure discharge lamp with a sintered compact containing lanthanum oxide
    Patent number: 5712531
    Abstract: The invention concerns high-pressure discharge lamps, whose electrodes have a sintered compact (5) containing lanthanum oxide acting as an electron emitter, and this compact is surrounded by an electrode coil (6). Sintered compact (5) contains at least 90 weight % lanthanum oxide. In this way, a high thermal stability of sintered compact (5) and a good ignition performance of the lamp are assured with only negligible blackening of the discharge vessel over the service life of the lamp.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: January 27, 1998
    Assignee: Patent - Truehand - Gesellshaft fuer electrishe Gluelampen mbH
    Inventors: Albert Rademacher, Ulrich Rosner