Patents by Inventor Christopher Sievers

Christopher Sievers 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).

  • Patent number: 6490171
    Abstract: An invention relates to an apparatus for shielding an electronic circuit situated on a printed circuit board in an electrically conductive housing which has at least one opening and/or bushing, in which a shielding tube extends from the printed circuit board as far as the housing and encompasses the opening and/or the bushing, and a device for length equalization of the shielding tube forms an electrical contact of the shielding tube independently of tolerances between the printed circuited board and the housing.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: December 3, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christopher Sievers, Reinhold Berberich
  • Publication number: 20020054485
    Abstract: The invention relates to an apparatus for shielding an electronic circuit situated on a printed circuit board in an electrically conductive housing which has at least one opening and/or bushing, in which a shielding tube extends from the printed circuit board as far as the housing and encompasses the opening and/or the bushing, and a device for length equalization of the shielding tube forms an electrical contact of the shielding tube independently of tolerances between the printed circuit board and the housing.
    Type: Application
    Filed: August 2, 2001
    Publication date: May 9, 2002
    Inventors: Christopher Sievers, Reinhold Berberich
  • Patent number: 6317035
    Abstract: In an apparatus and a method for enabling and/or activating/deactivating a security device, in particular an access device for a motor vehicle, in which, after receiving a stimulation sequence which is transmitted by a transmitter of a transmission device, coded information (enable signal) is transmitted by a portable transmission unit (radio key) and is received by a receiver in the transmission device, a controller comparing the received enable signal with predetermined coded information and, if they match, emitting an actuation signal to the security device, if a plurality of matching radio keys are present in the reception area of the device, the transmission quality between the security device and the radio keys is checked. The only radio key which is used to transmit an enable signal is that which has the best transmission conditions to the security device.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: November 13, 2001
    Assignee: Mannesmann VDO AG
    Inventors: Reinhold Berberich, Christopher Sievers, Thorsten Bürger, Gregor Hassler