Patents by Inventor Werner Marks

Werner Marks 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 the preparation of 11(12)-pentadecen-15-olides
    Patent number: 7183420
    Abstract: The invention relates to an improved method for the preparation of 11(12)-pentadecen-15-olides.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: February 27, 2007
    Assignee: Symrise GmbH & Co. KG
    Inventors: Peter Esser, Oskar Koch, Werner Marks, Jared Klein
  • Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane
    Patent number: 7098347
    Abstract: Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has a pKa value of greater than or equal to 4.5 and the strong acid has a pKa value of less than or equal to 1.5, wherein after the reaction has taken place, the strong acid is neutralized with at least 0.9 molar equivalent of a base.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: August 29, 2006
    Assignee: symrise GmbH & Co. KG
    Inventors: Stefan Lambrecht, Werner Marks, Hans-Juergen Topp, Norbert Richter, Walter Kuhn
  • Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane
    Publication number: 20050085536
    Abstract: Process for the preparation of 1-hydroperoxy-16-oxabicyclo[10.4.0]hexadecane (DDP-OOH), wherein 13-oxabicyclo[10.4.0]hexadec-1(12)-ene (DDP) and hydrogen peroxide are reacted in a diluent in the presence of a strong acid, the diluent has a pKa value of greater than or equal to 4.5 and the strong acid has a pKa value of less than or equal to 1.5, wherein after the reaction has taken place, the strong acid is neutralized with at least 0.9 molar equivalent of a base.
    Type: Application
    Filed: September 10, 2004
    Publication date: April 21, 2005
    Inventors: Stefan Lambrecht, Werner Marks, Hans-Juergen Topp, Norbert Richter, Walter Kuhn
  • Method for the preparation of 11(12)-pentadecen-15-olides
    Publication number: 20040030194
    Abstract: The invention relates to an improved method for the preparation of 11(12)-pentadecen-15-olides.
    Type: Application
    Filed: June 18, 2003
    Publication date: February 12, 2004
    Applicant: Symrise GmbH & Co. KG.
    Inventors: Peter Esser, Oskar Koch, Werner Marks, Jared Klein
  • Method of producing alkoxycinnamic acid ester
    Patent number: 6680404
    Abstract: The invention relates to a method of producing alkoxycinnamic acid ester (alkoxy cinnamate) by condensing C5-C8 acetic acid esters with C1-C4 alkoxybenzaldehyde in the presence of an alkaline and/or alkaline earth C1-C4 alcohalate and removing the C1-C4 alcohol that is produced by this reaction from the reaction mixture.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: January 20, 2004
    Assignee: Symrise GmbH & Co. KG
    Inventors: Walter Kuhn, Werner Marks, Klaus Zahlmann
  • Process for preparing substituted 2-cyanocinnamic esters
    Patent number: 5451694
    Abstract: In the preparation of substituted 2-cyanocinnamic esters by the Knoevenagel condensation of cyanoacetic esters and carbonyl compounds, the reaction times for obtaining high yields can be considerably reduced by using C.sub.3 -C.sub.6 -monocarboxylic acids and ammonium compounds as catalysts.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: September 19, 1995
    Assignee: Haarmann & Reimer GmbH
    Inventors: Walter Kuhn, Werner Marks, Thomas Thielmann, Erich Dilk