Patents by Inventor Richard Dehn

Richard Dehn 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).

  • Use of supported ruthenium-carbene complexes in continuously operated reactors
    Patent number: 8937207
    Abstract: The present invention relates to a process for carrying out a chemical reaction in the presence of a ruthenium-carbene complex supported on silicon dioxide in a continuously operated reactor and also the use of corresponding supported catalysts in continuously operated reactors.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: January 20, 2015
    Inventors: Richard Dehn, Stephan Deuerlein, Manuel Danz, Michael Limbach, Joaquim Henrique Teles
  • PROCESS FOR PREPARING MACROCYCLIC KETONES
    Publication number: 20130338402
    Abstract: The present invention relates to a process for preparing cyclic compounds having at least eight carbon atoms and at least one keto group, to the cyclic compounds obtained by this process and to the use thereof, in particular as fragrance or for providing a fragrance.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Inventors: Richard Dehn, Joaquim Henrique Teles, Michael Limbach, Stephan Deuerlein, Manuel Danz, Ralf Pelzer, Daniel Schneider
  • PROCESS FOR PREPARING CYCLOHEPTENE
    Publication number: 20130018205
    Abstract: The present invention provides a process for preparing cycloheptene and derivatives thereof by ring-closing metathesis of unsymmetric 1,8-dienes whose C—C double bond at the 8 position is nonterminal. Cycloheptene and the cycloheptanone, cycloheptylamine, cycloheptanecarbaldehyde, cycloheptanecarboxylic acid and cycloheptanecarbonyl chloride conversion products thereof, and the derivatives thereof, are important synthesis units for active ingredient compounds. The ring-closing metathesis is preferably performed as a reactive distillation. The unsymmetric 1,8-dienes for the ring-closing metathesis can be obtained by catalytic decarbonylation or oxidative decarboxylation from the corresponding unsaturated carboxylic acids or carboxylic acid derivatives.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 17, 2013
    Applicant: BASF SE
    Inventors: Joaquim Henrique TELES, Michael Limbach, Richard Dehn, Stephan Deuerlein, Manuel Danz
  • USE OF SUPPORTED RUTHENIUM-CARBENE COMPLEXES IN CONTINUOUSLY OPERATED REACTORS
    Publication number: 20120165588
    Abstract: The present invention relates to a process for carrying out a chemical reaction in the presence of a ruthenium-carbene complex supported on silicon dioxide in a continuously operated reactor and also the use of corresponding supported catalysts in continuously operated reactors.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 28, 2012
    Applicant: BASF SE
    Inventors: Richard Dehn, Stephan Deuerlein, Manuel Danz, Michael Limbach, Joaquim Henrique Teles
  • PROCESS FOR THE PREPARATION OF 1-METHYL-1-ALKOXYCYCLOPENTANES
    Publication number: 20120101307
    Abstract: Process for the preparation of cyclopentane derivatives of the formula I in which R is a C1- to C10-alkyl group, which comprises reacting cyclohexanol or cyclohexene or mixtures of both compounds to give 1-methyl-1-cyclopentene (1st stage) and subsequently adding a C1- to C10-alkanol onto the double bond of the 1-methyl-1-cyclopentene (2nd stage).
    Type: Application
    Filed: October 24, 2011
    Publication date: April 26, 2012
    Applicant: BASF SE
    Inventors: Andreas LANVER, Klaus Ebel, Rainer Klopsch, Werner Bertleff, Richard Dehn, Joaquim Henrique Teles, Helmut Kronemayer, Marcus Georg Schrems
  • PROCESS FOR THE PREPARATION OF 1-METHYLCYCLOPENTANE DERIVATIVES
    Publication number: 20120101306
    Abstract: Process for the preparation of 1-methylcyclopentene by thermal reaction of cyclohexanol or cyclohexene or mixtures of both compounds to give 1-methylcyclopentene, wherein the resulting by-products 3-methylcyclopentene and 4-methylcyclopentene (double-bond isomers of 1-methylcyclopentene) are returned to the reaction.
    Type: Application
    Filed: October 21, 2011
    Publication date: April 26, 2012
    Applicant: BASF SE
    Inventors: Andreas LANVER, Klaus Ebel, Rainer Klopsch, Werner Bertleff, Richard Dehn, Joaquim Henrique Teles, Helmut Kronemayer, Marcus Georg Schrems