Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Reexamination Certificate
2006-10-17
2006-10-17
Snay, Jeffrey R. (Department: 1809)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
C422S093000, C128S126100
Reexamination Certificate
active
07122154
ABSTRACT:
A method and infrared sensing device for determining the concentration of alveolar alcohol in a breath sample exhaled by a subject into an infrared sensing device. The presence of alcohol from the upper respiratory tract of the subject is detected by continuously monitoring alcohol and carbon dioxide, normalizing alcohol values with respect to carbon dioxide, calculating a difference between normalized alcohol concentration and carbon dioxide concentration over time, integrating (summing) the difference, and comparing the integrated difference with a threshold. This technique accurately and consistently detects the presence of mouth alcohol in the sample before the presence of carbon dioxide which originates in deep lung breath.
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Allen Roger
Braig James R.
Forrester Glenn C.
Goldberger Daniel S.
Herrera Roger
Intoximeters, Inc.
Polster Lieder Woodruff & Lucchesi LC
Snay Jeffrey R.
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