Patents by Inventor Joseph F. Repman

Joseph F. Repman 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).

  • Method to produce a transition metal carbide from a partially reduced transition metal compound
    Patent number: 6495115
    Abstract: A transition metal carbide is formed from a precursor mixture comprising at least one of the group consisting of: a transition metal, a transition metal carbide and a transition metal oxide. The precursor mixture may contain the desired transition metal carbide (e.g., WC), but if the desired transition metal carbide is present in the precursor mixture, there is necessarily a significant amount of another compound such as a transition metal oxide, undesired carbide (e.g., W2C) or transition metal.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: December 17, 2002
    Assignee: OMG Americas, Inc.
    Inventors: Stephen D. Dunmead, Kevin J. Nilsen, Gabrielle R. Lasher, Joseph F. Repman, Hobart A. Barker, Alan W. Weimer
  • Dehydrohalogenation using magnesium hydroxide
    Patent number: 5107040
    Abstract: A process comprising contacting a solvent, magnesium hydroxide, and a halogenated hydrocarbon at a pressure sufficient to keep the solvent and the halogenated hydrocarbon under liquid conditions, and a temperature greater than 150.degree. C. under conditions suitable to dehydrohalogenate the halogenated hydrocarbon, and recovering the dehydrohalogenated product.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: April 21, 1992
    Assignee: The Dow Chemical Company
    Inventors: Joseph F. Repman, Tarver G. Snedecor, Jr.
  • 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.