Patents by Inventor Clark A. Sumner

Clark A. Sumner 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).

  • Patent number: 4046866
    Abstract: A process for production of liquid sulfur trioxide in which sulfur is combusted with oxygen in one stage at a furnace outlet temperature of between about 1000.degree. F and about 2700.degree. F, and the resulting sulfur dioxide-containing gas is subjected to multistage catalytic conversion to sulfur trioxide, the sulfur trioxide being recovered by conventional condensaton techniques. Substantially all the uncondensed gases from the sulfur trioxide condensation step are recycled to the combustion step.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: September 6, 1977
    Assignee: Stauffer Chemical Company
    Inventors: Harvey Zeh Hurlburt, Clark A. Sumner