Patents by Inventor Erno Klaassen

Erno Klaassen 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 and sensor array having improved selectivity
    Patent number: 6977511
    Abstract: A sensor for determining the presence of an analyte is disclosed comprising a reactive layer disposed between a base plate and a movable plate. The reactive layer is configured to interact with an analyte effecting a change in capacitance between the base plate and movable plate. When the analyte has a polarity or overall Hildebrand solubility parameter that is similar to the reactive layer, the change in capacitance is caused by a swelling of the reactive layer as analyte is absorbed into the reactive layer. This results in a decrease in capacitance. When the analyte has a solubility parameter not near the reactive layer, the absorbed analyte causes the reactive layer's total polarity to increase, an effect that dominates swelling. This causes an increase in capacitance. A capacitive sensing circuit is included for measuring the change in capacitance which is indicative of the analyte exposed to the sensor.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: December 20, 2005
    Assignee: Xsilogy, Inc
    Inventors: Sanjay V. Patel, Bernd Fruhberger, Robert J. Warmack, Todd E. Mlsna, David R. Baselt, Erno Klaassen
  • Sensor and sensor array having improved selectivity
    Publication number: 20050164285
    Abstract: A sensor for determining the presence of an analyte is disclosed comprising a reactive layer disposed between a base plate and a movable plate. The reactive layer is configured to interact with an analyte effecting a change in capacitance between the base plate and movable plate. When the analyte has a polarity or overall Hildebrand solubility parameter that is similar to the reactive layer, the change in capacitance is caused by a swelling of the reactive layer as analyte is absorbed into the reactive layer. This results in a decrease in capacitance. When the analyte has a solubility parameter not near the reactive layer, the absorbed analyte causes the reactive layer's total polarity to increase, an effect that dominates swelling. This causes an increase in capacitance. A capacitive sensing circuit is included for measuring the change in capacitance which is indicative of the analyte exposed to the sensor.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 28, 2005
    Inventors: Sanjay Patel, Bernd Fruhberger, Robert Warmack, Todd Mlsna, David Baselt, Erno Klaassen
  • Sensor having improved selectivity
    Patent number: 6864692
    Abstract: A sensor for determining the presence of an analyte is disclosed comprising a reactive layer disposed between a base plate and a movable plate. The reactive layer is configured to interact with an analyte effecting a change in capacitance between the base plate and movable plate. When the analyte has a polarity or overall Hildebrand solubility parameter that is similar to the reactive layer, the change in capacitance is caused by a swelling of the reactive layer as analyte is absorbed into the reactive layer. This results in a decrease in capacitance. When the analyte has a solubility parameter not near the reactive layer, the absorbed analyte causes the reactive layer's total polarity to increase, an effect that dominates swelling. This causes an increase in capacitance. A capacitive sensing circuit is included for measuring the change in capacitance which is indicative of the analyte exposed to the sensor.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: March 8, 2005
    Assignee: Xsilogy, Inc.
    Inventors: Sanjay V. Patel, Bernd Fruhberger, Robert J. Warmack, Todd E. Mlsna, David R. Baselt, Erno Klaassen