Patents by Inventor Brian E. Doll

Brian E. Doll 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
  • Cyanide removal from wastewaters
    Patent number: 4239620
    Abstract: Removal of cyanide in wastewater treatment improved by initially contacting a rich cyanide bearing stream with activated sludge at a pH within the range of 3-6 upstream of the wastewater treating plant.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: December 16, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Brian E. Doll, Vernon F. Coty, Philip P. Lifland