Patents by Inventor Stefan Boeck

Stefan Boeck 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).

  • Regeneration of catalyst used in the preparation of 3,4-epoxy-1-butene
    Patent number: 5905161
    Abstract: Process for regenerating a silver catalyst deactivated by coking during the gas phase epoxidation of 1,3-butadiene by reacting the coked catalyst with a gas mixture containing at least 5% by volume of water vapor and up to 95% by volume of oxygen at temperatures of from 100 to 500 .degree. C.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 18, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Boeck, Klaus Herzog, Rolf Fischer, Herbert Vogel, Martin Fischer
  • Preparation of 3,4-epoxy-1-butene
    Patent number: 5618954
    Abstract: 3,4-Epoxy-1-butene is prepared by the gas phase epoxidation of 1,3-butadiene by means of oxygen or oxygen-containing gases over silver-containing catalysts and isolation of the 3,4-epoxy-1-butene from the reaction exit mixture by performing the gas phase epoxidation in the presence of from 6 to 80 mol % of water vapor, based on the gas mixture supplied to the reactor.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: April 8, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Boeck, Klaus Herzog, Rolf Fischer, Herbert Vogel, Martin Fischer
  • Silver catalyst
    Patent number: 5407888
    Abstract: A silver catalyst containing one or more alkali metals and also tungsten as promotors for the direct oxidation of ethylene with oxygen to form ethylene oxide, on a porous support substantially consisting of .alpha.-aluminum oxide and having a specific surface area (BET) of from 0.3 to 3 m.sup.2 /g, which contains tungsten in a concentration of from 60 to 330 ppmwt, based on the total catalyst, per m.sup.2 of surface area for each gram of supporting material.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: April 18, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Herzog, Stefan Boeck, Wolf D. Mross, Juergen Plueckhan, Karl-Heinz Boehning, Ewald Gallei