Patents by Inventor X. D. Hu

X. D. Hu 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).

  • Fischer-tropsch catalyst prepared with a high purity iron precursor
    Publication number: 20040009871
    Abstract: A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of water in the catalyst production. The catalyst particles prepared with the high purity iron precursor have an essentially spherical particle shape, a relatively narrow particle size distribution range, and a high surface area.
    Type: Application
    Filed: May 29, 2003
    Publication date: January 15, 2004
    Inventors: X.D. Hu, Robert J. O'Brien, Richard Tuell, Esternio Conca, Carlo Rubini, Guido Petrini
  • Promoted and stabilized copper oxide and zinc oxide catalyst and preparation
    Patent number: 5990040
    Abstract: A catalyst for the conversion of carbon oxide comprising 30 to 70% CuO, 20 to 90% ZnO, 0.1 to 20% of an element of Group IV-B in the form of an oxide, preferably titanium and/or zirconium, most preferably titanium, about 5 to about 40 percent Al.sub.2 O.sub.3 and preferably 50 to 1000 ppm of a Group 1-A element in the form of an oxide.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: November 23, 1999
    Assignee: United Catalysts Inc.
    Inventors: X. D. Hu, Jon P. Wagner