Patents by Inventor John Warberg

John Warberg 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).

  • Breath testing system
    Patent number: 4163383
    Abstract: A breath tester includes an electronic detector providing an information signal with an amplitude level which varies as a function of the alcohol content in the breath under test. An anomaly detector circuit stores a signal related to the peak of the information signal, and continually compares this peak value with the instantaneous value of the information signal. When the difference between the peak signal level and the instantaneous signal level exceeds a preset amount, the output display of the breath tester is modified to indicate the analysis process has been disturbed by an anomalous chemical substance.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: August 7, 1979
    Assignee: Alcohol Countermeasure Systems Inc.
    Inventors: Gary L. VanderSyde, John Warberg