Patents by Inventor Thomas F. Hill, Jr.

Thomas F. Hill, Jr. 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).

  • Purification of anhydrous hydrogen chloride
    Patent number: 4927621
    Abstract: A method to purify impure gaseous hydrogen chloride containing an unsaturated chlorinated hydrocarbon contaminant in an amount less than that necessary to inhibit purification, comprising exposing the impure hydrogen chloride to an ultraviolet light source in the presence of gaseous chloride for a sufficient time for the gaseous chloride to react with organic impurities in the hydrogen chloride to form heavier organic compounds and thereafter separating the heavier compounds from the hydrogen chloride.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: May 22, 1990
    Assignee: The Dow Chemical Company
    Inventors: Joseph F. Repman, Thomas E. Morris, Thomas F. Hill, Jr.