Patents by Inventor Knut Grothmann

Knut Grothmann 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).

  • Electrode arrangement for a discharge lamp, gas discharge lamp, protective film and method for providing a protective film on an electrode arrangement
    Patent number: 10991569
    Abstract: An electrode arrangement for a discharge lamp is provided, including an electrode unit including an electrode and an electrode plate, and a conductive connection unit for coupling to an energy source. The connection unit includes a connection unit plate. The arrangement includes a cylinder composed of a nonconductive material, said cylinder arranged between the electrode plate and the connection unit plate, and at least one conduction film which is arranged on an outer side of the cylinder and extends from the connection unit plate as far as the electrode plate and connects the connection unit plate and the electrode plate to one another. The arrangement includes a cap-shaped and integrally embodied protective film arranged on the electrode plate or connection unit plate, such that the film covers a plate side facing away from the cylinder and an outer lateral surface of the electrode plate or of the connection unit plate.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: April 27, 2021
    Assignee: OSRAM GmbH
    Inventor: Knut Grothmann
  • ELECTRODE ARRANGEMENT FOR A DISCHARGE LAMP, GAS DISCHARGE LAMP, PROTECTIVE FILM AND METHOD FOR PROVIDING A PROTECTIVE FILM ON AN ELECTRODE ARRANGEMENT
    Publication number: 20200273694
    Abstract: An electrode arrangement for a discharge lamp is provided, including an electrode unit including an electrode and an electrode plate, and a conductive connection unit for coupling to an energy source. The connection unit includes a connection unit plate. The arrangement includes a cylinder composed of a nonconductive material, said cylinder arranged between the electrode plate and the connection unit plate, and at least one conduction film which is arranged on an outer side of the cylinder and extends from the connection unit plate as far as the electrode plate and connects the connection unit plate and the electrode plate to one another. The arrangement includes a cap-shaped and integrally embodied protective film arranged on the electrode plate or connection unit plate, such that the film covers a plate side facing away from the cylinder and an outer lateral surface of the electrode plate or of the connection unit plate.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Inventor: Knut Grothmann
  • Modified Alternating Current Operation of a High-Pressure Discharge Lamp
    Publication number: 20110121745
    Abstract: A method for operating a high pressure discharge lamp with an alternating current, comprising providing the alternating current with a DC component differing from zero.
    Type: Application
    Filed: July 15, 2008
    Publication date: May 26, 2011
    Inventors: Knut Grothmann, Ulrich Hartwig