Patents by Inventor Hans-Juergen Topp

Hans-Juergen Topp 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).

  • 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