Patents by Inventor Christoph Rüdinger

Christoph Rüdinger 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).

  • Process for producing coated catalysts for the synthesis of maleic anhydride by gas-phase oxidation
    Patent number: 6048987
    Abstract: There is a process for producing coated catalysts for the gas-phase oxidation of C.sub.4 hydrocarbons to maleic anhydride. A vanadyl phosphate catalyst precursor is prepared having a V/P ratio of from 1:0.5 to 1:2 and a mean vanadium oxidation state of from 3.9 to 4.5. The vanadyl phosphate precursor is then calcined by heating for a several hours at a temperature of from 200.degree. C. to 500.degree. C. before being applied, in an aqueous suspension to the support bodies. Furthermore, there is the use of these coated catalysts in processes for the gas-phase oxidation of saturated or unsaturated C.sub.4 -hydrocarbons to maleic anhydride.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: April 11, 2000
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Dirk Groke, Christoph Ruedinger, Hans-Juergen Eberle, Reinhard Jering, Richard Bosch