Patents by Inventor Steven A. Rush

Steven A. Rush 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: 6416567
    Abstract: Mercury is efficiently and effectively removed from waste materials by a process and apparatus which heats waste containing mercury to temperatures well above the boiling point of mercury to create a vapor stream laden with mercury vapor. This vapor stream is first cooled to a temperature at least 100° F. above the boiling point of mercury, which allows some condensation of impure mercury with other materials, and creates a second vapor stream comprising mercury. This second vapor stream is then cooled to a temperature below the boiling point of mercury to condense more pure condensates of mercury. A third cooling step optionally may then be used to cool the remaining vapor stream to temperatures below the boiling point of mercury to remove further mercury content from the vapor stream. Filters and/or scrubbers may be added to remove trace amounts of mercury from the effluent vapor stream.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: July 9, 2002
    Assignee: Mercury Waste Solutions, Inc.
    Inventors: Mark G. Edlund, James R. Cornwell, Steven A. Rush