Patents by Inventor Stephen Jonathan Freeman

Stephen Jonathan Freeman 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).

  • System to quench gasses and remove condensables
    Patent number: 6312503
    Abstract: A method and apparatus for quenching and scrubbing a hot gas using a liquid in a single packed column while controlling mist formation. Hot gas is introduced at the bottom of the column and drawn upward countercurrent to the scrubbing liquid. The column has three stages, each packed and fed liquid from above. The first stage is a quench region wherein the gas flow rate, liquid flow rate and liquid temperature are controlled such that the quench rate does not exceed 5.4° C./ft2 of packing to prevent formation of an aerosol mist. The second and third stages for scrubbing employ packed regions separately supplied with increasingly cooler and purer liquid.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: November 6, 2001
    Assignee: Arteva North America S.A.R.L.
    Inventors: Lawrence Robert Fike, Torsten Schmidt, Stephen Jonathan Freeman, Miguel Angel Osornio, Jörg Bartels