Patents by Inventor D. S. Shephard

D. S. Shephard 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).

  • Supported catalysts having a high sintering stability and a process for producing them
    Patent number: 6372687
    Abstract: Supported catalysts having a high sintering stability and comprising one or more noble metal cluster carbonyl compounds of the formula (1) [HaMbNcLd(CO)x]n−An+ and their use for the dehydrogenation, hydrogenation and oxidation of organic compounds where M and N are, independently of one another, one or more metals selected from the group consisting of Pt, Rh, Ir, Os, Ru, Ag, Pd, Au, Ni, Fe, Co, Cu, Re, Mn; L is one or more neutral or anionic ligands which may be identical or different; (A)n+ is one or more cations which balance the charge of the complex; a is an integer from 0 to 10, preferably from 0 to 6; b is an integer from 2 to 60; c is an integer from 0 to 30; d is an integer from 0 to 60; x is an integer from 1 to 120; n is the total charge of the complex which results from the individual charges of the constituents and is greater than 0, wher
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: April 16, 2002
    Assignee: Hoechst Research & Technology
    Inventors: Alfred Hagemeyer, Harald Werner, Uwe Dingerdissen, Klaus Kühlein, John Meurig Thomas, Brian F. G. Johnson, D. S. Shephard, T. Maschmeyer