Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Reexamination Certificate
2005-10-14
2009-11-03
Alexander, Lyle A (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
C422S087000, C436S116000, C436S118000, C436S167000, C073S023200, C073S031020
Reexamination Certificate
active
07611671
ABSTRACT:
Highly sensitive devices for detecting nitric oxide and/or other gaseous analytes in gaseous samples are improved by the incorporation of a carbon monoxide scavenger in the interior of the device or in the device packaging. The release of carbon monoxide within the housing of the device by the plastic used in the construction of the housing or by anything within the device that releases carbon monoxide causes a loss in sensitivity due to competition between the carbon monoxide and the nitric oxide for the binding sites on the device sensor. The scavenger corrects this by either catalyzing the oxidation of carbon monoxide to the less competitive carbon dioxide or immobilizing the carbon monoxide by affinity-type or covalent binding. Analogous effects are achieved for analytes other than nitric oxide but that likewise encounter interference from carbon monoxide in binding to sensors.
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Anvar David J.
Chazan David J.
Flaherty Bryan P.
Parikh Bhairavi R.
Alexander Lyle A
Aperon Biosystems Corp.
Heines M. Henry
Townsend and Townsend and Crew LLP.
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