Patents by Inventor Siegfried R. Waldvogel

Siegfried R. Waldvogel 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).

  • Patent number: 8747646
    Abstract: The invention relates to a process for preparing biaryls by anodic cross-dehydrodimerization of substituted phenols with arenes in the presence of partially fluorinated and/or perfluorinated mediators and a supporting electrolyte.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: June 10, 2014
    Assignee: BASF SE
    Inventors: Andreas Fischer, Itamar Michael Malkowsky, Florian Stecker, Siegfried R. Waldvogel, Axel Kirste
  • Patent number: 8747645
    Abstract: The invention relates to a process for preparing unsymmetrical biaryl by anodic dehydrodimerization of substituted ortho-alkoxyaryl alcohols in the presence of partially fluorinated and/or perfluorinated mediators and a supporting electrolyte.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: June 10, 2014
    Assignee: BASF SE
    Inventors: Florian Stecker, Andreas Fischer, Itamar Michael Malkowsky, Siegfried R. Waldvogel, Axel Kirste
  • Publication number: 20130040031
    Abstract: The present invention relates to a method for producing vanillin, which comprises an electrochemical oxidation of an aqueous, lignin-comprising suspension or solution at an anode, wherein the anode used is a silver electrode.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 14, 2013
    Applicants: Rheinische Friedrich-Wilhelms-Universitaet Bonn, BASF SE
    Inventors: Florian STECKER, Itamar Michael MALKOWSKY, Andreas FISCHER, Siegfried R. WALDVOGEL, Carolin REGENBRECHT
  • Patent number: 8288163
    Abstract: The present invention relates to a device and process for the quick and reliable online detection of triacetone triperoxide (TATP).
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: October 16, 2012
    Assignees: Rheinische Friedrich-Wilhelms-Universitaet Bonn, Max-Planck-Gesellschaft zur Foerderung der Wissenschaften E.V.
    Inventors: Siegfried R. Waldvogel, Jürgen Lörgen, Daniel Lubczyk, Klaus Müllen, Roland Bauer
  • Publication number: 20120080320
    Abstract: The invention relates to a process for preparing biaryls by anodic cross-dehydrodimerization of substituted phenols with arenes in the presence of partially fluorinated and/or perfluorinated mediators and a supporting electrolyte.
    Type: Application
    Filed: June 1, 2010
    Publication date: April 5, 2012
    Applicant: BASF SE
    Inventors: Andreas Fischer, Itamar Michael Malkowsky, Florian Stecker, Siegfried R. Waldvogel, Axel Kirste
  • Publication number: 20120067736
    Abstract: The invention relates to a process for preparing unsymmetrical biaryl by anodic dehydrodimerization of substituted ortho-alkoxyaryl alcohols in the presence of partially fluorinated and/or perfluorinated mediators and a supporting electrolyte.
    Type: Application
    Filed: June 1, 2010
    Publication date: March 22, 2012
    Applicant: BASF SE
    Inventors: Florian Stecker, Andreas Fischer, Itamar Michael Malkowsky, Siegfried R. Waldvogel, Axel Kirste
  • Publication number: 20110089046
    Abstract: The invention relates to a process for the electrochemical cleavage of lignin by means of a diamond electrode and also to a process for producing vanillin and derivatives thereof by electrochemical cleavage of lignin in a solution having a pH?11.
    Type: Application
    Filed: May 11, 2009
    Publication date: April 21, 2011
    Applicant: BASF SE
    Inventors: Ulrich Griesbach, Andreas Fischer, Florian Stecker, Joerg Botzem, Ralf Pelzer, Mario Emmeluth, Siegfried R. Waldvogel
  • Publication number: 20110020944
    Abstract: The present invention relates to an apparatus and a method for fast and reliable online detection of triacetone triperoxide (TATP), with at least three differently coated HFF quartz crystal oscillator sensors (29).
    Type: Application
    Filed: February 11, 2009
    Publication date: January 27, 2011
    Applicants: RHEINISCHE FRIEDRICH-WILHILMS-UNIVERSITÄT BONN, MAX-PLANCK-GESELLSCHAFT ZUR FÕRDERUNG DER WISSENSC
    Inventors: Siegfried R. Waldvogel, Jürgen Lörgen, Daniel Lubczyk, Klaus Müllen, Roland Bauer
  • Patent number: 7863486
    Abstract: The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where R is C1-6-alkyl or C2-6-alkenyl which is optionally substituted by one or more substituents selected independently from the group consisting of phenyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; R1 is H; C1-6-alkyl or C(O)—C1-6-alkyl and A is a 5-, 6- or 7-membered hydrocarbon ring which is saturated or has a double bond and in which at least one CH2 group may, if appropriate, be replaced by —O—, —S— —NH—, —N? or —N(C1-6-alkyl)- and which may optionally be substituted by one or more further substituents selected independently from the group consisting of phenyl, C1-6-alkyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; wherein, based on the ring carbon bearing the substituent R, the oxime derivative has an excess of the R or S form of at least 10%.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: January 4, 2011
    Assignee: BASF SE
    Inventors: Ulrich Griesbach, Siegfried R. Waldvogel, Itamar Michael Malkowsky, Joern Kulisch
  • Publication number: 20090253937
    Abstract: The present invention relates to a process for preparing an amine, which comprises the step cathodic reduction of a corresponding oxime derivative of the general formula (I) where R is C1-6-alkyl or C2-6-alkenyl which is optionally substituted by one or more substituents selected independently from the group consisting of phenyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; R1 is H; C1-6-alkyl or C(O)—C1-6-alkyl and A is a 5-, 6- or 7-membered hydrocarbon ring which is saturated or has a double bond and in which at least one CH2 group may, if appropriate, be replaced by —O—, —S— —NH—, —N? or —N(C1-6-alkyl)- and which may optionally be substituted by one or more further substituents selected independently from the group consisting of phenyl, C1-6-alkyl, O—C1-6-alkyl, NH—C1-6-alkyl, N(C1-6-alkyl)2, OH and NH2; wherein, based on the ring carbon bearing the substituent R, the oxime derivative has an excess of the R or S form of at least 10%.
    Type: Application
    Filed: June 27, 2007
    Publication date: October 8, 2009
    Applicant: BASF SE
    Inventors: Ulrich Griesbach, Siegfried R. Waldvogel, Itamar Michael Malkowsky, Jörn Kulisch