Patents by Inventor August-Wilhelm Preuss

August-Wilhelm Preuss 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).

  • Metal oxide powders, their mixtures, metal mixed oxide powders, their mixtures and their use in catalytic dehydrogenation of hydrocarbons
    Patent number: 5053580
    Abstract: Metal oxide powders comprised of Cr(III) oxide, Ti(IV) oxide, V(V) oxide, or mixtures of these, or metal mixed oxides comprised of Cr(III) oxide and Ti(IV) oxide and V(V) oxide, or their mixtures. They have BET surfaces of 5-50m.sup.2 /g and mean particle diameters of 25-350 nm and are useful to increase conversion and selectivity in the manufacture of mono-olefins by catalytic dehydrogenation of saturated hydrocarbons. The metal oxide powders are produced from mixtures of the vaporized metal compounds chromyl chloride, titanium tetrachloride, and vanadyl chloride, in the presence of certain gases by laser pyrolysis.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: October 1, 1991
    Assignee: Veba Oel Aktiengesellschaft
    Inventors: Bernhard Schramm, Jurgen Kern, Harald Schwahn, August-Wilhelm Preuss, Klaus Gottlieb, Hartmut Bruderreck
  • Metal oxide powders or their mixtures and their use in catalytic dehydrogenation of hydrocarbons
    Patent number: 5013706
    Abstract: Metal oxide powders comprised of Cr(III) oxide, Ti(IV) oxide, V(V) oxide, or mixtures of these, or metal mixed oxides comprised of Cr(III) oxide and Ti(IV) oxide and V(V) oxide, or their mixtures. They have BET surfaces of 5-50 m.sup.2 /g and mean particle diameters of 25-350 nm and are useful to increase conversion and selectivity in the manufacture of mono-olefins by catalytic dehydrogenation of saturated hydrocarbons. The metal oxide powders are produced from mixtures of the vaporized metal compounds chromyl chloride, titanium tetrachloride, and vanadyl chloride, in the presence of certain gases by laser pyrolysis.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: May 7, 1991
    Assignee: Veba Oel Aktiengesellschaft
    Inventors: Bernhard Schramm, Jurgen Kern, Harald Schwahn, August-Wilhelm Preuss, Klaus Gottlieb, Hartmut Bruderreck
  • Process for the operation of an Otto engine
    Patent number: 4955331
    Abstract: A method for reducing the consumption of fuel and emission of toxic exhaust gas and reducing engine wear of an Otto engine, equipped with an exhaust gas catalyst system for secondary combustion of exhaust gas, in which a liquid non-leaded fuel containing 1 to 100 ppm by weight of ferrocene is used.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: September 11, 1990
    Assignee: Vebe Oel Aktiengesellschaft
    Inventors: Dieter Hohr, August-Wilhelm Preuss, Kurt-Peter Schug, Helmut Riegel
  • Process for the performance of chemical reaction with atomic hydrogen
    Patent number: 4664904
    Abstract: Atomic hydrogen for chemical reaction is produced in relatively high concentrations by the combustion of molecular hydrogen with a substoichiometric quantity of oxygen. The chemical reactant is supplied at the point of the development of the atomic hydrogen. Combustion is effected at pressures between 10 mbar and 1.5 bar, with a mole ratio of molecular hydrogen to molecular oxygen of 2.3 to 5.0.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: May 12, 1987
    Assignee: Veba Oel Ag
    Inventors: Jurgen Wolfrum, Jurgen Warnatz, Hartmut Bruderreck, Klaus Gottlieb, August-Wilhelm Preuss