Patents by Inventor Urban Helfried

Urban Helfried 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).

  • Linearly extended device for large-surface microwave treatment and for large surface plasma production
    Patent number: 6863773
    Abstract: The aim of the invention is to provide an alternative to the intensive treatment of a product, especially plasma treatment, in specific areas only. Towards this end, the invention provides a device for producing microwaves for treating workpieces, comprising at least one microwave antenna with an extended conductor for producing alternating electromagnetic fields, a housing that substantially extends over the length of the conductor, and an extended microwave decoupling area which follows the conductor and which is located in the housing. The housing is formed by at least one resonant cavity, which has a long shape and follows the course of the microwave antenna. The resonant cavity has at least one tapering, closed, first crown area and the decoupling area essentially extends in the focussing area of the resonant cavity. An at least non-divergent housing area adjoins the resonant cavity.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: March 8, 2005
    Assignee: Fraunhofer-Gesellschaft angewandten Forschung e.V.
    Inventors: Rudolf Emmerich, Mathias Kaiser, Urban Helfried, Peter Elsner, Klaus Martin Baumgärtner, Eberhard Räuchle, Konstantin Räuchle