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).

  • Benzochromene derivatives
    Patent number: 7824745
    Abstract: The present invention relates to benzochromene derivatives of the formula I where the various parameters have the meaning indicated 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, and to the use of the compounds and physiologically acceptable derivatives thereof as therapeutic active ingredients.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: November 2, 2010
    Assignee: Merck Patent GmbH
    Inventors: Andreas Taugerbeck, Melanie Klasen-Memmer
  • LIQUID-CRYSTAL DISPLAY
    Publication number: 20100272925
    Abstract: Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
    Type: Application
    Filed: April 23, 2010
    Publication date: October 28, 2010
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Achim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
  • LIQUID-CRYSTALLINE MEDIUM AND LIQUID-CRYSTAL DISPLAY
    Publication number: 20100252777
    Abstract: Disclosed are a dielectrically negative, liquid-crystalline medium which contains a (first) dielectrically negative component (component A), which contains one or more dielectrically negative compounds of formula I and a further (second) dielectrically negative component (component B), and the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PS-VA, FFS or IPS effect, and displays of this type.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 7, 2010
    Applicant: MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventors: Melanie KLASEN-MEMMER, Axel Jansen, Detlef Pauluth
  • Liquid Crystalline Medium
    Publication number: 20100243958
    Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.
    Type: Application
    Filed: June 8, 2010
    Publication date: September 30, 2010
    Inventors: Melanie Klasen-Memmer, Matthias Bremer
  • Liquid-crystalline medium
    Patent number: 7785677
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula (I) in which R11, R12 and Z1 have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display based on the ECB, FFS or IPS effect.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: August 31, 2010
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Volker Reiffenrath
  • 2, 5-SELENOPHENE DERIVATIVES AND 2, 5-TELLUROPHENE DERIVATIVES
    Publication number: 20100216986
    Abstract: The invention relates to 2,5-selenophene derivatives and 2,5-tellurophene derivatives, inter alia for use as components in liquid-crystal mixtures, and to liquid-crystal mixtures which comprise the compounds, and to liquid-crystal displays based on these mixtures. The invention furthermore relates to processes for the preparation of the compounds and to Se/Te-containing intermediates.
    Type: Application
    Filed: August 7, 2008
    Publication date: August 26, 2010
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Axel Jansen, Detlef Pauluth, Melanie Klasen-Memmer
  • Liquid-crystalline medium
    Patent number: 7767280
    Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: August 3, 2010
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Melanie Klasen-Memmer, Matthias Bremer
  • Cyclobutane and spiro[3.3]heptane compounds
    Patent number: 7744968
    Abstract: The present invention relates to cyclobutane and spiro[3.3]heptane compounds, to a process for the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain these liquid-crystalline media.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: June 29, 2010
    Assignee: Merck Patent GmbH
    Inventors: Volker Reiffenrath, Matthias Bremer, Melanie Klasen-Memmer
  • Stilbene derivatives, liquid-crystal mixtures and electro-optical displays
    Patent number: 7732022
    Abstract: Disclosed are fluorostilbene compounds of formula I, liquid-crystal media which comprise these compounds, the use of the media in electro-optical displays, in particular in VAN LCDs, and a process for the preparation of these compounds.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: June 8, 2010
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Atsutaka Manabe
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20100134751
    Abstract: The invention relates to a liquid-crystalline medium having negative dielectric anisotropy based on a mixture of polar compounds, which comprises at least one compound of the formula I in which R11 and R12 have the meanings indicated in claim 1, in amounts of ?30% by weight, based on the medium, and to the use thereof for an active-matrix display based on the ECB, PALC, FFS or IPS effect.
    Type: Application
    Filed: August 3, 2006
    Publication date: June 3, 2010
    Inventors: Melanie Klasen-Memmer, Elisabeth Meyer, Detlef Pauluth, Andreas Taugerbeck
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20100102275
    Abstract: Disclosed are a liquid-crystalline medium of negative dielectric anisotropy based on a mixture of polar compounds, which contains at least one compound of formula IA and at least one compound of formulae IB, IC and/or ID and the use thereof for an active-matrix display, in particular based on the ECB, PALC, FFS or IPS effect.
    Type: Application
    Filed: January 4, 2010
    Publication date: April 29, 2010
    Inventors: Melanie Klasen-Memmer, Matthias Bremer
  • Liquid-crystalline medium comprising fluorinated indane compound
    Patent number: 7704567
    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: Grant
    Filed: September 22, 2004
    Date of Patent: April 27, 2010
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Lars Lietzau, Matthias Bremer
  • Spiro[3.3] heptyl-dioxan derivatives and their use in liquid crystal media
    Patent number: 7691456
    Abstract: The invention relates to novel dioxane derivatives of the formula R1-(A1-Z1)m-G-(Z2-A2)n-R2, in which G denotes (I) or (II), and in which R1, R2, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, to the use thereof as component(s) of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: April 6, 2010
    Assignee: Merck Patent Gesellschaft
    Inventors: Lars Lietzau, Werner Binder, Melanie Klasen-Memmer, Eike Poetsch, Markus Czanta
  • Furochroman derivatives
    Patent number: 7678929
    Abstract: Disclosed are furochroman compounds of formula I liquid-crystal media which contains the compounds of formula I, and the use of the media in electro-optical displays, in particular in VAN LCDs.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: March 16, 2010
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Axel Jansen, Andreas Taugerbeck, Melanie Klasen-Memmer, Georg Bernatz
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20100051864
    Abstract: Disclosed are a liquid-crystalline medium based on a mixture of polar compounds which contain at least one compound of formula I and the use thereof for a passive-matrix or active-matrix display based on the ECB, FFS, PALC or IPS effect.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 4, 2010
    Inventors: Melanie KLASEN-MEMMER, Axel Jansen, Izumi Saito
  • Difluorosubstituted heterocyclic compounds and the use thereof in the form of components in liquid crystalline media
    Patent number: 7648742
    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: Grant
    Filed: July 5, 2005
    Date of Patent: January 19, 2010
    Assignee: Merck Patent GmbH
    Inventors: Andreas Taugerbeck, Melanie Klasen-Memmer
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20090309066
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of dielectrically negative, polar compounds which comprises at least one compound of the formula I in which the parameters have the meanings indicated in claim 1, to the use thereof in an electro-optical display, particularly in an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect, and to displays of this type.
    Type: Application
    Filed: July 17, 2007
    Publication date: December 17, 2009
    Inventors: Melanie Klasen-Memmer, Georg Bernatz, Izumi Saito, Matthias Bremer, Lars Lietzau, Volker Reiffenrath
  • Cyclopenta[b]naphthalene derivatives
    Patent number: 7612243
    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: Grant
    Filed: October 31, 2007
    Date of Patent: November 3, 2009
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Matthias Bremer, Melanie Klasen-Memmer, Michael Heckmeier
  • Liquid-crystalline medium
    Patent number: 7582337
    Abstract: Disclosed are a liquid-crystalline medium based on a mixture of polar compounds, which contains at least one compound of formula I and the use thereof for an active-matrix display based on the ECB, FFS, PALC or IPS effect.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 1, 2009
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Izumi Saito
  • Liquid crystal medium and electrooptical display containing same
    Publication number: 20090213318
    Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.
    Type: Application
    Filed: June 13, 2005
    Publication date: August 27, 2009
    Inventors: Melanie Klasen-Memmer, Izumi Saito, Herbert Plach, Kazuaki Tarumi