Patents by Inventor Theodore Paul Kircher

Theodore Paul Kircher 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 measuring and controlling selective catalytic reduction (SCR) emission control systems
    Patent number: 7846405
    Abstract: A method for monitoring and/or controlling performance of a selective catalytic reduction (SCR) emission control system includes injecting a quantity of a pollution neutralizing gas into a combustion gas stream containing a pollutant gas. The method also includes passing the stream over a catalyst bed to facilitate a reaction of the pollution neutralizing gas with the pollutant gas to produce an effluent and measuring a ratio of the pollution neutralizing gas to the pollutant gas in the effluent.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: December 7, 2010
    Assignee: General Electric Company
    Inventors: William Steven Lanier, Frederic Francis Ahlgren, Theodore Paul Kircher