Patents by Inventor Günther H. Derra

Günther H. Derra 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).

  • Short-arc discharge lamp with a starting antenna
    Patent number: 6380679
    Abstract: A short-arc discharge lamp (1) is provided with a translucent lamp vessel (10) which is closed in a gas-tight manner and which is provided with an ionizable fill. A first and a second electrode (11a, 11b) are arranged in the lamp vessel (10) which are each connected to its own current conductor (12a, 12b) which extends to outside the lamp vessel. A starting antenna (2) is arranged near to the lamp vessel, which antenna is connected to a further current conductor (24). The starting antenna comprises an antenna container (20) and a further electrode (22) which antenna container (20) is closed in a gas-tight manner and contains an ionizable fill, the further electrode (22) being connected to the further current conductor (24). This makes it possible to realize a shorter reignition time by means of a higher reignition voltage on the starting antenna while spark-over from the starting antenna (2) to the lamp vessel (10) is avoided.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: April 30, 2002
    Assignee: U.S. Philips Corporation
    Inventors: Dieter Leers, Klaus Lohn, Martin Ossmann, Johannes M. De Regt, Günther H. Derra, Hubertus C. M. Van Den Nieuwenhuizen