The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2012
Filed:
Jul. 14, 2009
Michael Leonard Iiams, Littleton, CO (US);
Ben Franklin Houston, Denver, CO (US);
Royce Alan Mcdonald, Northglenn, CO (US);
Jeffrey Scott Hawthorne, Bennett, CO (US);
Mark Henry Wojcik, Littleton, CO (US);
Gordon William Murray, Lone Tree, CO (US);
Charles Thomas Champion, Denver, CO (US);
Michael Leonard Iiams, Littleton, CO (US);
Ben Franklin Houston, Denver, CO (US);
Royce Alan McDonald, Northglenn, CO (US);
Jeffrey Scott Hawthorne, Bennett, CO (US);
Mark Henry Wojcik, Littleton, CO (US);
Gordon William Murray, Lone Tree, CO (US);
Charles Thomas Champion, Denver, CO (US);
Alcohol Monitoring Systems, Inc., Littleton, CO (US);
Abstract
An improvement in monitoring alcohol levels through transdermal testing is provided by detecting if environmental gasses, referred to as interferents, have been introduced into a transdermal vapor sample. An insensible skin perspiration sample may not be completely controlled and can contain interferents from an environmental source rather than the subject. Before testing a skin perspiration sample, the alcohol sensor is sampled and averaged to establish a baseline value. A sample is drawn and presented to the alcohol sensor. The output of the alcohol sensor is monitored to determine the amount of alcohol in the sample. A maximum alcohol sensor value for the transdermal alcohol monitor is set by determining the baseline value when no alcohol is present in the sample. Subsequent baseline values during a reading above the maximum alcohol sensor value indicate that an environmental interferent is present in the alcohol sensor.