Patents by Inventor Melanie Klasen-Memmer

Melanie Klasen-Memmer 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: 7371437
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R11, R12 and have the meanings indicated in claim 1, is described. Also described is the use thereof for an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: May 13, 2008
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Difluorosubstituted Heterocyclic Compounds and the Use Thereof in the Form of Components in Liquid Crystalline Media
    Publication number: 20080071097
    Abstract: The invention relates to compounds of formula (I), wherein a, b, c, d, e, R1, R2, A1, A2, A3, A4, Y1, Y2, Y3, Z1, Z2, Z3, Z4 and are such as defined in claim 1, to a method for the production thereof, intermediates for the production and the thereof in the form of components in liquid crystalline media and to electrooptic display elements containing said liquid crystalline media.
    Type: Application
    Filed: July 5, 2005
    Publication date: March 20, 2008
    Inventors: Andreas Taugerbeck, Melanie Klasen-Memmer
  • Liquid-crystalline compounds
    Patent number: 7344761
    Abstract: The invention relates to liquid-crystalline compounds of the formula (I), where R11, X11, L11, Y and W are as defined in claim 1, and to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula (I) and to electro-optical displays containing a liquid-crystalline medium of this type
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: March 18, 2008
    Assignee: Merck Patent Gesellaschaft mit Beschrankter Haftung
    Inventors: Peer Kirsch, Eike Poetsch, Alexander Hahn, Werner Binder, Volker Meyer, Michael Heckmeier, Georg Luessem, Melanie Klasen-Memmer
  • CYCLOPENTA[B]NAPHTHALENE DERIVATIVES
    Publication number: 20080058537
    Abstract: The present invention relates to cyclopenta[b]naphthalene derivatives to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer, Michael Heckmeier
  • Liquid-crystalline medium
    Patent number: 7335403
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which comprises at least one compound of the formula (I) in which R0, R1, A1, Z1 and m have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: February 26, 2008
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Lars Lietzau
  • Benzochromene derivatives
    Patent number: 7326447
    Abstract: The present invention relates to benzochromene derivatives of the formula I in which the various parameters are as defined in the text, and to liquid-crystal media which comprise these compounds, and to the use of the media in electro-optical displays, in particular in VAN LCDs.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: February 5, 2008
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Andreas Taugerbeck, Melanie Klasen-Memmer
  • Chromane Derivatives Method for Production and the Use Thereof
    Publication number: 20080020148
    Abstract: The present invention relates to chromane derivatives of the general formula I and of the general formula (II) and chromene derivatives of the general formulae (III) and (IV) and chromene derivatives of the general formulae (V) and (VI) in which R1, R2, A1, A2, Z1, Z2, L1, L2, L3, L4, m and n have the meanings indicated in Claim 1 in relation to the respective formulae, to a process for the preparation thereof, to the use thereof as component(s) in liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
    Type: Application
    Filed: September 28, 2005
    Publication date: January 24, 2008
    Inventors: Markus Klein, Peer Kirsch, Eike Poetsch, Michael Heckmeier, Peter Best, Andreas Taugerbeck, Melanie Klasen-Memmer
  • Liquid-crystalline compounds
    Patent number: 7291367
    Abstract: The invention relates to liquid-crystalline compounds of the formula (I) in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, a, b and c have the meanings indicated in Claim 1, and to liquid-crystalline media comprising at least one compound of the (I) and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: November 6, 2007
    Assignee: Merck Patent GmbH
    Inventors: Peer Kirsch, Alexander Hahn, Eike Poetsch, Volker Meyer, Michael Heckmeier, Melanie Klasen-Memmer, Georg Luessem, Christian Hock
  • Cyclopenta[b]naphthalene derivatives
    Patent number: 7291366
    Abstract: The present invention relates to cyclopenta[b]naphthalene derivatives of the general formula (I) in which Z, A, n, R, L5 and L8 as (II) and (III) are as defined in Claim 1, to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising at least one of these cyclopenta[b]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: November 6, 2007
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer, Michael Heckmeier
  • Hexahydrodibenzofuran derivatives
    Publication number: 20070247585
    Abstract: Disclosed are hexahydrodibenzofuran compounds of formula I, the preparation thereof, the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Inventors: Axel Jansen, Andreas Taugerbeck, Melanie Klasen-Memmer
  • Liquid crystalline medium and liquid crystal display
    Publication number: 20070235688
    Abstract: Disclosed are compounds of formula I and dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula I, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3, and optionally a dielectric neutral component, component C, as well as to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and to IPS displays.
    Type: Application
    Filed: April 6, 2007
    Publication date: October 11, 2007
    Inventors: Markus Czanta, Melanie Klasen-Memmer, Lars Lietzau
  • As-Indacen Derivatives
    Publication number: 20070228328
    Abstract: The present invention relates to compounds of the formula I where X1, X2, R1, R2, A1, A2, Z1, Z2, m, n and rings B and B? are as defined in claim 1.
    Type: Application
    Filed: April 12, 2005
    Publication date: October 4, 2007
    Applicant: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer
  • Dibenzofuran Derivatives, Dibenzothiophene Derivatives and Fluorene Derivatives
    Publication number: 20070219380
    Abstract: The present invention relates to compounds of the formula I where Y, X1, X2, X3, R1, R2, A1, A2, Z1, Z2, m and n are as defined in Claim 1, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements containing the liquid-crystalline media according to the invention.
    Type: Application
    Filed: March 18, 2005
    Publication date: September 20, 2007
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer
  • Liquid crystalline medium and liquid crystal display
    Publication number: 20070205396
    Abstract: A dielectrically positive liquid crystalline media comprising a dielectrically positive component, component A, comprising a dielectrically positive compound of formula I wherein the parameters have the meaning given in the specification, and optionally a second dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3 and optionally a dielectric neutral component, component C, is suitable for use in liquid crystal displays, especially active matrix displays, and, in particular, TN and to IPS displays.
    Type: Application
    Filed: January 26, 2007
    Publication date: September 6, 2007
    Inventors: Markus Czanta, Melanie Klasen-Memmer, Eike Poetsch, Lars Lietzau
  • Liquid-crystalline medium comprising fluorinated indane compound
    Publication number: 20070080324
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of negative dielectric anisotropy, which comprises at least one compound of the formula I in which R11, R12, A1, A2, Z1, Z2, m and n are as defined in Claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.
    Type: Application
    Filed: September 22, 2004
    Publication date: April 12, 2007
    Inventors: Melanie Klasen-Memmer, Lars Lietzau, Matthias Bremer
  • Liquid-crystalline medium
    Patent number: 7189440
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one pyran compound of the formula I and one or more compounds selected from the group consisting of the compounds C-1 to C-5 in which the R, R1, the rings A, B and P, L1-6, X, X1, Z1, Z2, m and n are as defined above and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: March 13, 2007
    Assignee: Merck Patent GmbH
    Inventors: Atsutaka Manabe, Peer Kirsch, Eike Poetsch, Georg Luessem, Michael Heckmeier, Melanie Klasen-Memmer
  • Liquid-crystalline medium
    Publication number: 20070051920
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R11, R12 and have the meanings indicated in claim 1, is described. Also described is the use thereof for an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.
    Type: Application
    Filed: August 8, 2006
    Publication date: March 8, 2007
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Fluorinated indenes and 1,7-dihydroindacenes of negative dielectric anisotropy
    Patent number: 7182885
    Abstract: Fluorinated indenes and 1,7-dihydroindacenes of the general formulae (I) and (II) of negative dielectric anisotropy (??<0) in which T, A, R, L, X, Y, U, W, Z, n, m, p and q are as defined herein are suitable for use in liquid crystal display elements.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: February 27, 2007
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Melanie Klasen-Memmer, Matthias Bremer
  • Liquid-crystalline compounds
    Publication number: 20070034828
    Abstract: The invention relates to liquid-crystalline compounds of the formula (I), where R11, X11, L11, Y and W are as defined in claim 1, and to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one compound of the formula (I) and to electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Application
    Filed: May 24, 2004
    Publication date: February 15, 2007
    Inventors: Peer Kirsch, Eike Poetsch, Alexander Hahn, Werner Binder, Volker Meyer, Michael Heckmeier, Georg Luessem, Melanie Klasen-Memmer
  • Liquid crystal display device
    Patent number: 7169449
    Abstract: A liquid crystal display device produced through the steps of injecting a polymerizable monomer-containing liquid crystal composition between two substrates and, while applying a voltage between opposing transparent electrodes of the substrates, polymerizing the monomer, wherein the polymerizable monomer contained in the liquid crystal composition has one or more ring or condensed ring structures and functional groups bonded directly to the ring or condensed ring structure. The monomer is preferably represented by the following general formula: P1-A1-(Z1-A2)n-P2 wherein P1 and P2 are acrylates or the like, A1 and A2 are 1,4-phenylenes or the like, Z1 is —COO— or the like, and n is 0 to 2.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: January 30, 2007
    Assignees: Sharp Kabushiki Kaisha, Merck Patent GmbH
    Inventors: Yohei Nakanishi, Masakazu Shibasaki, Kazutaka Hanaoka, Yuichi Inoue, Kazuaki Tarumi, Matthias Bremer, Melanie Klasen-Memmer, Simon Greenfield, Richard Harding