Chemistry: electrical and wave energy – Apparatus – Electrolytic
Reexamination Certificate
2007-12-25
2007-12-25
Noguerola, Alex (Department: 1753)
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C204S403050, C204S403010
Reexamination Certificate
active
10448643
ABSTRACT:
A biosensor for determining the concentration of an analyte in a biological sample. The biosensor comprises a support, a reference electrode or a counter electrode or both a reference and a counter electrode disposed on the support, a working electrode disposed on the support, the working electrode spaced apart from the other electrode or electrodes on the support, a covering layer defining a sample chamber over the electrodes, an aperture in the covering layer for receiving a sample, and at least one layer of mesh in the sample chamber between the covering layer and the electrodes. The at least one layer of mesh has coated thereon a silicone surfactant. Certain silicone surfactants are as effective as fluorinated surfactants with respect to performance of biosensors. These surfactants, when coated onto the mesh layer of the biosensor, are effective in facilitating the transport of aqueous test samples, such as blood, in the sample chamber.
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Forrow Nigel John
McTigue Catherine Ann
Zhang Xiang Cheng
Abbott Laboratories
Merchant & Gould LLC
Noguerola Alex
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