Patents by Inventor Ralf Monkemoller

Ralf Monkemoller 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).

  • Metal-oxide gas sensor
    Patent number: 7461540
    Abstract: A gas sensor has a dielectric base having a face, a heater element on the face, electrodes connected to the heater element, and a gas sensor element on the heater element that when heated changes impedance when in contact with a predetermined gas. The element is in electrical contact with the heater element. A power supply connected to the heater element electrodes energizes same and heats the gas sensor to its operating temperature. A sensor electrode is also in contact with the sensor element so that the impedance of the sensor element can be measured between the sensor electrode and one of the heater element electrodes.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: December 9, 2008
    Inventor: Ralf Mönkemöller
  • Metal-oxide gas sensor
    Publication number: 20070254812
    Abstract: A gas sensor has a dielectric base having a face, a heater element on the face, electrodes connected to the heater element, and a gas sensor element on the heater element that when heated changes impedance when in contact with a predetermined gas. The element is in electrical contact with the heater element. A power supply connected to the heater element electrodes energizes same and heats the gas sensor to its operating temperature. A sensor electrode is also in contact with the sensor element so that the impedance of the sensor element can be measured between the sensor electrode and one of the heater element electrodes.
    Type: Application
    Filed: April 30, 2007
    Publication date: November 1, 2007
    Inventor: Ralf Monkemoller