Patents by Inventor Charles Thomas Champion

Charles Thomas Champion has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Detecting environmental interferent in a transdermal alcohol monitor
    Patent number: 8165824
    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.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: April 24, 2012
    Assignee: Alcohol Monitoring Systems, Inc.
    Inventors: Michael Leonard Iiams, Ben Franklin Houston, Royce Alan McDonald, Jeffrey Scott Hawthorne, Mark Henry Wojcik, Gordon William Murray, Charles Thomas Champion
  • DETECTING ENVIRONMENTAL INTERFERENT IN A TRANSDERMAL ALCOHOL MONITOR
    Publication number: 20110015873
    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.
    Type: Application
    Filed: July 14, 2009
    Publication date: January 20, 2011
    Applicant: Alcohol Monitoring Systems, Inc.
    Inventors: Michael Leonard Iiams, Ben Franklin Houston, Royce Alan McDonald, Jeffrey Scott Hawthorne, Mark Henry Wojcik, Gordon William Murray, Charles Thomas Champion