Patents by Inventor Silke Berndt

Silke Berndt 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).

  • Method for filling a vertical tube with catalyst particles
    Patent number: 7597529
    Abstract: A method of charging a vertical tube having an internal diameter of 50 mm or less with catalyst particles, which comprises introducing a filling aid into the vertical tube, where the filling aid comprises a flexible elongated body and the ratio of the cross section of the flexible elongated body to the cross section of the tube is from 0.003 to 0.08, and introducing the catalyst particles into the tube.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: October 6, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Volker Diehl, Steffen Rissel, Silke Berndt, Mark Duda, Knut Eger, Markus Hoelzle, Veron Nsunda
  • Thermal treatment of the precursor material of a catalytically active material
    Patent number: 7589046
    Abstract: In a process for the thermal treatment of the precursor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: September 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Juergen Poepel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Mueller-Engel
  • Method for producing methacrolein from isobutane
    Patent number: 7176335
    Abstract: A process prepares methacrolein from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and using the isobutenic product gas mixture to charge an oxidation zone in which the isobutene is oxidized to methacrolein in the gas phase with heterogeneous catalysis using molecular oxygen accompanied by molecular nitrogen as the oxygen source.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: February 13, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Silke Berndt, Klaus Joachim Mueller-Engel, Goetz-Peter Schindler, Frank Rosowski, Jochen Petzoldt
  • Method for filling a vertical tube with catalyst particles
    Publication number: 20060233631
    Abstract: A method of charging a vertical tube having an internal diameter of 50 mm or less with catalyst particles, which comprises introducing a filling aid into the vertical tube, where the filling aid comprises a flexible elongated body and the ratio of the cross section of the flexible elongated body to the cross section of the tube is from 0.003 to 0.08, and introducing the catalyst particles into the tube.
    Type: Application
    Filed: August 17, 2004
    Publication date: October 19, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Volker Diehl, Steffen Rissel, Silke Berndt, Mark Duda, Knut Eger, Markus Holzle, Veron Nsunda
  • Method for producing methacrylic acid from isobutane
    Patent number: 6933407
    Abstract: A process prepares methacrylic acid from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and charging an oxidation zone with the isobutenic product gas mixture after the components other than isobutane and isobutene have been substantially removed from the product gas mixture. The oxygen required to charge the oxidation zone is introduced accompanied by nitrogen.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: August 23, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Silke Berndt, Klaus Joachim Müller-Engel, Götz-Peter Schindler, Frank Rosowski, Jochen Petzoldt
  • Thermal treatment of the precursor material of a catalytically active material
    Publication number: 20040245681
    Abstract: In a process for the thermal treatment of the precusor material of a catalytically active material in a rotary tube furnace through which a gas stream flows, at least a proportion of the gas stream flowing through the rotary tube furnace is circulated, and the associated rotary tube furnace apparatus and tube-bundle reactors for the partial gas-phase oxidation of acrolein to acrylic acid are loaded with catalysts whose catalytically active material is obtainable by the process for the thermal treatment.
    Type: Application
    Filed: May 12, 2004
    Publication date: December 9, 2004
    Applicant: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Wolfgang Jurgen Popel, Silke Berndt, Raimund Felder, Signe Unverricht, Klaus Joachim Muller-Engel
  • Method for producing methacrolein from isobutane
    Publication number: 20040171887
    Abstract: A process prepares methacrolein from isobutane by subjecting isobutane to a partial catalytic dehydrogenation in the gas phase and using the isobutenic product gas mixture to charge an oxidation zone in which the isobutene is oxidized to methacrolein in the gas phase with heterogeneous catalysis using molecular oxygen accompanied by molecular nitrogen as the oxygen source.
    Type: Application
    Filed: December 29, 2003
    Publication date: September 2, 2004
    Inventors: Silke Berndt, Klaus Joachim Muller-Engel, Gotz-Peter Schindler, Frank Rosowski, Jochen Petzoldt