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:
Jun. 30, 2026
Filed:
Apr. 23, 2024
Automotive Coalition for Traffic Safety, Inc., Sterling, VA (US);
Jonas Ljungblad, Stockholm, SE;
Magnus Öberg, Sterling, VA (US);
Automotive Coalition for Traffic Safety, Inc., Ashburn, VA (US);
Abstract
A method for passive breath alcohol detection, the method comprising: A) passively obtaining a first air sample from the air inside the interior of a vehicle; B) determining the concentration of (i) a tracer gas, and (ii) an analyte present in the first air sample; C) passively obtaining a second air sample from the air inside the interior of the vehicle; D) determining the concentration of (i) the tracer gas, and (ii) the analyte present in the second air sample; E) continuing to passively obtain an N number of air samples from the air inside the interior of the vehicle, and for each air sample obtained, determining the concentration of the tracer gas and the analyte present in the air sample; F) determining a number of peaks in the concentration of the tracer gas and a number of peaks in the concentration of the analyte present in each of the air samples; G) determining a confidence interval based on the number of peaks in the concentration of the tracer gas and the number of peaks in the concentration of the analyte; and H) controlling operation of the vehicle based on a function of the confidence interval and the concentration of the analyte present in the air samples.