Patents by Inventor Uwe Tietjen

Uwe Tietjen 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).

  • Sensor having electrode for determining the rate of flow of a fluid
    Patent number: 6801041
    Abstract: Sensors that are capable measuring the rate of flow of a fluid that passes over the electrodes of the sensor. In these sensors, an electrode, designated the flow rate-determining electrode, is used in conjunction with the conventional electrodes, e.g., the working electrode, the reference electrode, and the counter electrode, to determine the rate of flow of the fluid. In one aspect, this invention provides a sensor for measuring the concentration of an analyte in a sample of fluid when the sample flows continuously over the electrodes of the sensor, especially when the rate of flow of the sample is relatively low. In another aspect, this invention provides a method for measuring the concentration of an analyte in a sample of fluid, wherein the rate of flow of the sample varies during the period of time that the sensor is in place. In a preferred embodiment, the sensor employs four electrodes, namely, a working electrode, a reference electrode, a counter electrode, and a flow rate-determining electrode.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: October 5, 2004
    Assignee: Abbott Laboratories
    Inventors: Shridhara Alva Karinka, Isabella Moser, Gerhard Jobst, Uwe Tietjen, Panagiota S. Petrou, Uwe Herberth, Gerald Urban
  • Sensor having electrode for determining the rate of flow of a fluid
    Publication number: 20030214304
    Abstract: Sensors that are capable measuring the rate of flow of a fluid that passes over the electrodes of the sensor. In these sensors, an electrode, designated the flow rate-determining electrode, is used in conjunction with the conventional electrodes, e.g., the working electrode, the reference electrode, and the counter electrode, to determine the rate of flow of the fluid. In one aspect, this invention provides a sensor for measuring the concentration of an analyte in a sample of fluid when the sample flows continuously over the electrodes of the sensor, especially when the rate of flow of the sample is relatively low. In another aspect, this invention provides a method for measuring the concentration of an analyte in a sample of fluid, wherein the rate of flow of the sample varies during the period of time that the sensor is in place. In a preferred embodiment, the sensor employs four electrodes, namely, a working electrode, a reference electrode, a counter electrode, and a flow rate-determining electrode.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 20, 2003
    Inventors: Shridhara Alva Karinka, Isabella Moser, Gerhard Jobst, Uwe Tietjen, Panagiota S. Petrou, Uwe Herberth, Gerald Urban