Patents by Inventor Jay C. Peterson

Jay C. Peterson 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).

  • Method and apparatus for remote measurement of exhaust gas
    Patent number: 5831267
    Abstract: A method and apparatus for sensing a composition of an exhaust plume includes a light source that radiates an infrared light beam having a plurality of predetermined wavelengths. A first of the predetermined wavelengths is associated with carbon dioxide and a second of the predetermined wavelengths is associated with a second gas, such as a hydrocarbon or carbon monoxide. The apparatus also includes a detector unit that detects the beam passing through the plume. The apparatus computes a ratio of the second gas to carbon dioxide based upon the first and second detected wavelengths, and this ratio is then multiplied by a predetermined estimation of a concentration of carbon dioxide in the plume.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: November 3, 1998
    Assignee: Envirotest Systems Corp.
    Inventors: Michael D. Jack, Jay C. Peterson, David R. Nelson, Michael N. Gray