Patents by Inventor Klaus Graske

Klaus Graske 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).

  • NOVEL CHIRAL HEPTYNE DERIVATIVES FOR THE PREPARATION OF EPOTHILONES AND PROCESSES FOR THEIR PREPARATION
    Publication number: 20080108838
    Abstract: The invention relates to a new synthetic process for the production of key intermediates useful in the synthesis of epothilones or epothilone derivatives, to certain compounds used to produce these key intermediates and to a process to produce said compounds.
    Type: Application
    Filed: December 12, 2007
    Publication date: May 8, 2008
    Inventors: Johannes Platzek, Orlin Petrov, Marc Willuhn, Klaus Graske, Werner Skuballa
  • Novel chiral heptyne derivatives for the preparation of epothilones and processes for their preparation
    Publication number: 20060100442
    Abstract: The invention relates to a new synthetic process for the production of key intermediates useful in the synthesis of epothilones or epothilone derivatives, to certain compounds used to produce these key intermediates and to a process to produce said compounds.
    Type: Application
    Filed: April 21, 2005
    Publication date: May 11, 2006
    Inventors: Johannes Platzek, Orlin Petrov, Marc Willuhn, Klaus Graske, Werner Skuballa
  • Process for the production of 1,4,7,10-tetraazacyclododecane and its derivatives
    Patent number: 5744616
    Abstract: A process for the production of 1,4,7,10-tetraazacyclododecane (cyclene) and its derivatives on an industrial scale comprises cyclotetramerizing of benzylaziridine that is produced in situ.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: April 28, 1998
    Assignee: Schering Aktiengesellschaft
    Inventors: Orlin Petrov, Annette Prelle, Klaus Graske, Klaus Nickisch, Bernd Raduchel, Johannes Platzek