Patents by Inventor Signe Unverricht

Signe Unverricht 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).

  • Preparation of ruthenium/iron catalysts supported on carbon
    Publication number: 20030149310
    Abstract: The present invention relates to a process for the preparation of iron-doped ruthenium catalysts supported on carbon, and their use for the selective liquid phase hydrogenation of carbonyl compounds to give the corresponding alcohols, in particular for the hydrogenation of citral to give geraniol or nerol or of citronellal to give citronellol.
    Type: Application
    Filed: December 4, 2002
    Publication date: August 7, 2003
    Inventors: Till Gerlach, Hans-Georg Gobbel, Frank Funke, Klaus Ebel, Ekkehard Schwab, Signe Unverricht, Reinhard Korner, Lisa Lobree
  • Selective hydrogenation of olefinically unsaturated carbonyl compounds
    Publication number: 20030109758
    Abstract: The present invention relates to a continuous process for the selective hydrogenation of olefinically unsaturated carbonyl compounds to give unsaturated alcohols in particular of citral to give a mixture of geraniol and nerol, in a reactor containing a liquid phase, in which at least one catalyst is suspended, and which can additionally contain a gas phase, wherein the liquid phase and, if present, the gas phase are passed through a device in the reactor having openings or channels.
    Type: Application
    Filed: December 4, 2002
    Publication date: June 12, 2003
    Inventors: Hans-Georg Gobbel, Till Gerlach, Frank Funke, Klaus Ebel, Signe Unverricht, Gerd Kaibel
  • Method of heterogeneous catalyzed vapor-phase oxidation of propane to acrolein and/or acrylic acid
    Patent number: 6541664
    Abstract: In a process for heterogeneously catalyzed gas-phase oxidation, a reaction gas starting mixture comprising propane, molecular oxygen and, if desired, inert gas is passed at from 300 to 500° C. over a fixed-bed catalyst.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: April 1, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Harald Jachow, Andreas Tenten, Signe Unverricht, Heiko Arnold
  • Method for the catalytic gas-phase oxidation of propene to acrylic acid
    Patent number: 6525217
    Abstract: A process for the catalytic gas-phase oxidation of propene to acrylic acid, in which the reaction gas starting mixture is oxidized, with an increased propene loading, in a first reaction stage, over a first fixed-bed catalyst and then the acrolein-containing product gas mixture of the first reaction stage is oxidized, in a second reaction stage, with an increased acrolein loading, over a second fixed-bed catalyst, the catalyst moldings in both reaction stages having an annular geometry.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: February 25, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Signe Unverricht, Heiko Arnold, Andreas Tenten, Ulrich Hammon, Hans-Peter Neumann, Klaus Harth
  • Shell catalysts, method for producing the same, and the use thereof
    Publication number: 20030036476
    Abstract: In a coated catalyst having a core and at least one shell surrounding the core, the core is made up of an inert support material, the shell or shells is/are made up of a porous support substance, with the shell being attached physically to the core, and a catalytically active metal selected from the group consisting of the metals of the 10th and 11th groups of the Periodic Table of the Elements is present in finely divided form or a precursor of the catalytically active metal is present in uniformly distributed form in the shell or shells.
    Type: Application
    Filed: September 10, 2002
    Publication date: February 20, 2003
    Inventors: Heiko Arnold, Cristina Freire Erdbrugger, Thomas Heidemann, Gerald Meyer, Signe Unverricht, Andrea Frenzel, Joachim Wulff-Doring, Andreas Ansmann
  • Method for producing acrolein and/or acrylic acid from propane
    Patent number: 6426433
    Abstract: In a process for the preparation of acrolein and/or acrylic acid from propane, the propane is subjected, in a first reaction stage, to a partial oxydehydrogenation with molecular oxygen under homogeneous and/or heterogeneous catalysis to give propene and the product gas mixture formed in the first reaction stage is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propene oxidation.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: July 30, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Andreas Tenten, Harald Jachow, Susanne Haupt, Heiko Arnold, Signe Unverricht
  • Method for producing acrolein and/or acrylic acid from propane
    Patent number: 6423875
    Abstract: In a process for the preparation of acrolein and/or acrylic acid from propane, the propane is subjected, in a first reaction stage, to an oxydehydrogenation with molecular oxygen under homogeneous and/or heterogeneous catalysis to give propene and the product gas mixture formed in the first reaction stage is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propene oxidation.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: July 23, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Andreas Tenten, Harald Jachow, Susanne Haupt, Heiko Arnold, Signe Unverricht
  • Catalytic conversion of fuel and converter therefor
    Publication number: 20020083699
    Abstract: For a process for the catalytic conversion of fuel for removing oxides of nitrogen from exhaust gases of internal combustion engines, in which fuel and a part-stream of the exhaust gas or of the intake air are converted in a converter, the fuel and the part-stream of the exhaust gas or of the intake air are fed separately from one another into the converter and the fuel is vaporized in the converter.
    Type: Application
    Filed: December 19, 2001
    Publication date: July 4, 2002
    Inventors: Michael Bender, Signe Unverricht
  • Method for the catalytic gas phase oxidation of acrolein into acrylic acid
    Patent number: 6403829
    Abstract: In a process for the catalytic gas-phase oxidation of acrolein to acrylic acid, the reaction gas starting mixture is passed, with an acrolein loading of ≧150 l (s.t.p.)/l.h, over a fixed-bed catalyst which is housed in two spatially successive reaction zones A, B, the reaction zone B being kept at a higher temperature than the reaction zone A.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: June 11, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Signe Unverricht, Heiko Arnold, Andreas Tenten, Ulrich Hammon
  • Method for the catalytic gas phase oxidation of propene into acrolein
    Patent number: 6395936
    Abstract: In a process for the catalytic gas-phase oxidation of propene to acrolein, the reaction gas starting mixture is passed with a propene loading of ≧160 l(S.T.P.)/l·h over a fixed-bed catalyst which is housed in two spatially successive reaction zones A,B, the reaction zone B being kept at a higher temperature than the reaction zone A.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: May 28, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Heiko Arnold, Signe Unverricht, Ulrich Hammon, Hans-Peter Neumann, Klaus Harth, Andreas Tenten
  • Method for producing acrolein and/or acrylic acid from propane
    Patent number: 6388129
    Abstract: In a process for the preparation of acrolein and/or acrylic acid from propane, the propane is subjected, in a first reaction stage, to a partial oxydehydrogenation with molecular oxygen under homogeneous and/or heterogeneous catalysis to give propene and the product gas mixture formed in the first reaction stage is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propene oxidation.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: May 14, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Otto Machhammer, Andreas Tenten, Harald Jachow, Susanne Haupt, Heiko Arnold, Signe Unverricht