Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2005-03-08
2005-03-08
Deb, Anjan K. (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C073S023310, C361S278000
Reexamination Certificate
active
06864692
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.
REFERENCES:
patent: 2581063 (1952-01-01), Alexander
patent: 3974825 (1976-08-01), Normann
patent: 3989463 (1976-11-01), Klein et al.
patent: 4453126 (1984-06-01), Volgyesi
patent: 4915812 (1990-04-01), Parce et al.
patent: 5164319 (1992-11-01), Hafeman et al.
patent: 5828542 (1998-10-01), Riley et al.
patent: 6356087 (2002-03-01), Wallrafen
Baselt David R.
Fruhberger Bernd
Klaassen Erno
Mlsna Todd E.
Patel Sanjay V.
BioTechnology Law Group
Chambers Daniel M
Deb Anjan K.
Xsilogy Inc.
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