Patents by Inventor Andreas Wien

Andreas Wien 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).

  • Filling level measuring device operating with microwaves
    Patent number: 6499346
    Abstract: This level measuring instrument which operates with microwaves, has a radiation characteristic with a pronounced forward lobe and can be used to transmit and/or receive microwaves with a large frequency bandwidth. A housing section is designed as a waveguide short-circuited at one side and one end by a rear wall, and is virtually completely filled with an insert made of a dielectric. An exciter element, projects into the housing section and is connected to a microwave source. An antenna adjoins the housing section, for transmitting and/or receiving microwaves. A gap is arranged in the insert between the exciter element and the antenna. The gap forms a filter which is essentially non-transparent to higher modes of the waveguide.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: December 31, 2002
    Assignee: Endress + Hauser GmbH + Co.
    Inventors: Andreas Wien, Klaus-Peter Oberle, Alexander Hardell, Stefan Burger
  • Filling level measuring device operating with microwaves
    Patent number: 6202485
    Abstract: This level measuring instrument which operates with microwaves, has a radiation characteristic with a pronounced forward lobe and can be used to transmit and/or receive microwaves with a large frequency bandwidth. A housing section is designed as a waveguide short-circuited at one side and one end by a rear wall, and is virtually completely filled with an insert made of a dielectric. An exciter element, projects into the housing section and is connected to a microwave source. An antenna adjoins the housing section, for transmitting and/or receiving microwaves. A gap is arranged in the insert between the exciter element and the antenna. The gap forms a filter which is essentially non-transparent to higher modes of the waveguide.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: March 20, 2001
    Assignee: Endress + Hauser GmbH + Co.
    Inventors: Andreas Wien, Klaus-Peter Oberle, Alexander Hardell, Stefan Burger