Patents by Inventor Steven R. Hieger

Steven R. Hieger 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).

  • Manufacture of perchloroethylene by chlorinating hydrocarbons and partially chlorinated hydrocarbons in the presence of hydrogen
    Patent number: 5399797
    Abstract: Perchloroethylene and hydrogen chloride are made by noncatalytic thermal chlorination of hydrocarbons and/or their partially chlorinated derivatives by reacting them with chlorine in the presence of hydrogen and carbon tetrachloride as a reactive diluent, under conditions which maximize consumption of carbon tetrachloride and minimize the production of heavy ends, such as hexachlorobenzene and other tarry products.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: March 21, 1995
    Assignee: Vulcan Materials Company
    Inventors: Jimmie T. Petrosky, Steven R. Hieger, Evert E. Gannaway, Charles R. Cupit