04770026 is referenced by 25 patents and cites 5 patents.

Apparatus for measuring breath alcohol content by oxidizing breath alcohol in a fuel cell and utilizing substantially all of the electrons produced by said oxidation as a measure of the amount of alcohol contained in the sample. A working embodiment of the invention includes a resistor across terminals of the fuel cell with a resistance that is high enough to permit the voltage from the fuel cell to be accurately measured but low enough to permit the voltage to fall to a substantially steady minimum voltage within a time on the order of two minutes or less. The method of measuring breath alcohol concentration comprises integrating the entire area under the curve generated by the fuel cell output voltage between the beginning of oxidation of the alcohol in the fuel cell and the reaching of the substantially steady minimum.

Title
Method of and apparatus for testing breath alcohol
Application Number
7/3478
Publication Number
4770026
Application Date
January 15, 1987
Publication Date
September 13, 1988
Inventor
Karl P W Wolf
St. Louis
MO, US
Agent
Polster Polster and Lucchesi
Assignee
Alcotek
MO, US
IPC
G01N 27/16
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