Patents by Inventor Patrick G. Smyth

Patrick G. Smyth 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).

  • Control of cyanides in FCC reactor by injection of ammonium polysulfide
    Patent number: 4508683
    Abstract: The concentration of cyanides in the sour water system of FCC reactor is controlled by injecting such an amount of ammonium polysulfide (APS) into the system that the weight ratio of net free sulfur to simple cyanides in the sour water is about 0.6 to about 3.8. The pH of the sour water is at least 8.0.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: April 2, 1985
    Inventors: Brian E. Doll, Patrick G. Smyth