Patents by Inventor Richard Hovan

Richard Hovan 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).

  • Advanced dual sensor technology for a continuous emission monitoring system
    Publication number: 20050189239
    Abstract: A system and method for providing continuous emission data of stack flue gas using at least one pair of electrochemical (EC) cells that are switched between flue gas flow and air.
    Type: Application
    Filed: April 13, 2004
    Publication date: September 1, 2005
    Applicant: Land Instruments International, Inc.
    Inventors: John Ellis, Richard Whiteside, Richard Hovan
  • Light source for open-path gas monitoring
    Patent number: 6781695
    Abstract: An improved light source for use in an opacity monitor (transmissometer) that reduces the variation in light intensity across a projected light beam to enable a more accurate and stable method for measuring the opacity of gases in a stack/duct, especially at low values (e.g., <10%) of opacity while operating within specific performance requirements.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: August 24, 2004
    Assignee: Land Instruments International, Inc.
    Inventors: Richard Hovan, Stuart F. Metcalfe, Derek D. Stuart