Patents by Inventor Michael Heckmeier

Michael Heckmeier 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).

  • Liquid crystalline medium
    Patent number: 6878421
    Abstract: The invention relates to a liquid crystalline medium, based on a mixture of polar compounds with a positive dielectric anisotropy. Said medium is characterised in that it contains one or more compounds of formula (I) wherein R, A1, A2, Z1, Z2, X1, X2, n and o are defined as per claim 1.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: April 12, 2005
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Martin Engel, Brigitte Schuler, Matthias Bremer, Detlef Pauluth
  • Liquid-crystalline medium
    Publication number: 20050040365
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more ester compounds of the formula I and one or more compounds of the formula IA in which R1, R2, ring A, ring B, L1-6, Z1, Z2, X1 and X2 are as defined in claim 1.
    Type: Application
    Filed: September 9, 2004
    Publication date: February 24, 2005
    Inventors: Michael Heckmeier, Sabine Schoen, Peer Kirsch, Brigitte Schuler, Izumi Saito
  • Liquid-crystalline medium
    Publication number: 20050035329
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, Y, Z and n are as defined in claim 1.
    Type: Application
    Filed: July 2, 2004
    Publication date: February 17, 2005
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath
  • 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
  • Liquid-crystalline medium
    Publication number: 20050035330
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, Y, Z and n are as defined in claim 1.
    Type: Application
    Filed: July 2, 2004
    Publication date: February 17, 2005
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath
  • Pyran compound or at least one derivative thereof
    Publication number: 20050017216
    Abstract: The invention relates to pyran derivatives of the formula I and to a process and intermediates for their preparation and derivatisation, and to the use thereof in liquid-crystalline media.
    Type: Application
    Filed: May 27, 2004
    Publication date: January 27, 2005
    Inventors: Eike Poetsch, Werner Binder, Volker Meyer, Michael Heckmeier, Georg Luessem
  • Pyrans as liquid crystals
    Publication number: 20050012073
    Abstract: A tetrahydropyran derivative comprising at least three cyclic rings and one aromatic endgroup of the formula A a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.
    Type: Application
    Filed: May 27, 2004
    Publication date: January 20, 2005
    Inventors: Mark Goulding, Warren Duffy, Kevin Adlem, Peer Kirsch, Alexander Hahn, Eike Poetsch, Werner Binder, Volker Meyer, Melanie Klasen-Memmer, Michael Heckmeier, Georg Lussem
  • Liquid-crystalline medium
    Publication number: 20040262572
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1
    Type: Application
    Filed: July 8, 2004
    Publication date: December 30, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid-crystalline medium
    Publication number: 20040256604
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1
    Type: Application
    Filed: July 8, 2004
    Publication date: December 23, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid-crystalline medium
    Publication number: 20040256600
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1
    Type: Application
    Filed: July 8, 2004
    Publication date: December 23, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid-crystalline medium
    Publication number: 20040251447
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I 1
    Type: Application
    Filed: July 2, 2004
    Publication date: December 16, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath
  • Liquid-crystalline medium
    Publication number: 20040245501
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I 1
    Type: Application
    Filed: July 2, 2004
    Publication date: December 9, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath
  • Liquid-crystalline medium
    Publication number: 20040245502
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I 1
    Type: Application
    Filed: July 8, 2004
    Publication date: December 9, 2004
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid-crystalline medium
    Patent number: 6827990
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I in which R1, L1 and L2 are as defined in claim 1.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: December 7, 2004
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Izumi Saito, Volker Reiffenrath, Georg Luessem, Christian Hock
  • Liquid crystal compounds
    Publication number: 20040238789
    Abstract: The invention relates to liquid crystal compounds of formula (1), where X1, X2, X3, Z1, Z2, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11 and a have the meanings given in claim 1, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 2, 2004
    Inventors: Peer Kirsch, Detlef Pauluth, Andreas Ruhl, Joachim Krause, Kazuaki Tarumi, Michael Heckmeier
  • Electrooptical liquid crystal display
    Patent number: 6815017
    Abstract: The invention relates to an electrooptical liquid crystal display comprising a reorientation layer for reorientation of the liquid crystals. The field of said reorientation layer has a component parallel to the liquid crystal layer, said component being crucial for the reorientation. Said component comprises a liquid-crystalline medium having a positive dielectric anisotropy and contains at least one mesogenic compound of the formula (I), wherein R1 and L are delined as in claim 1.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: November 9, 2004
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Eike Poetsch
  • Oxabicyclooctanes
    Patent number: 6808762
    Abstract: The present invention relates to oxabicyclooctanes of the general formula I. in which R1, R2, A1, A2, A3, A4, L1, L2, n1, n2 and n3 have the meanings specified in claim 1, and to their use in liquid-crystalline media.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: October 26, 2004
    Assignee: Merck Patent GmbH
    Inventors: Matthias Bremer, Michael Heckmeier, Melanie Klasen-Memmer, Harald Lannert
  • Liquid-crystalline medium having a high birefringence and improved UV stability
    Patent number: 6808764
    Abstract: A liquid-crystalline medium comprises the compound of the formula (I): generally in amounts from 1 to 30% by weight, preferably from 2 to 20% by weight, particularly preferably from 3 to 10% by weight, and further liquid-crystalline compounds.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: October 26, 2004
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Volker Reiffenrath
  • Liquid-crystalline medium
    Patent number: 6805923
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I in which R, A, L1, L2 and Y are as defined herein are suitable for use in liquid crystal displays such as MLC, TN or STN displays.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: October 19, 2004
    Assignee: Merck Patentgesellschaft Mit
    Inventors: Michael Heckmeier, Brigitte Schuler, Peer Kirsch, Eike Poetsch
  • Liquid crystal medium
    Patent number: 6793983
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I and at least one compound of the formula in which the substituents are as defined in claim 1.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: September 21, 2004
    Assignee: Merck Patent GmbH
    Inventors: Michael Heckmeier, Brigitte Schuler, Kazuaki Tarumi, Peer Kirsch, Volker Reiffenrath