Patents by Inventor Stephan Guertler

Stephan Guertler 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).

  • Pyran derivatives containing an exocyclic double bond
    Patent number: 7314943
    Abstract: The invention relates to pyran derivatives of formula I and processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: January 1, 2008
    Assignee: Merck Patent GmbH
    Inventors: Eike Poetsch, Volker Meyer, Werner Binder, Michael Heckmeier, Georg Luessem, Stephan Guertler
  • Aldehydes containing a difluorooxymethylene bridge
    Patent number: 7109381
    Abstract: Aldehydes containing a difluorooxymethylene bridge, of the general formula I OHC-(A11)m-Z11-(A12-Z12)n-(A13-Z13)p-A14I and the use and preparation thereof and the preparation of 1,3-dioxane compounds.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: September 19, 2006
    Assignee: Merck Patent GmbH
    Inventors: Eike Poetsch, Werner Binder, Volker Meyer, Stephan Gürtler, Juergen Eckstein, Michael Schwarz
  • Pyran derivatives containing an exocyclic double bond
    Publication number: 20050038267
    Abstract: The invention relates to pyran derivatives of formula I and processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media.
    Type: Application
    Filed: May 25, 2004
    Publication date: February 17, 2005
    Inventors: Eike Poetsch, Volker Meyer, Werner Binder, Michael Heckmeier, Georg Luessem, Stephan Guertler