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).

  • 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
  • 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
    Patent number: 6790489
    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, Z1, ring A and m are as defined in claim 1, and to the use thereof for an active matrix display based on the ECB or IPS effect.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: September 14, 2004
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Eike Poetsch, Volker Reiffenrath
  • Fluorinated fluorene derivatives
    Publication number: 20040106798
    Abstract: The invention relates to fluorinated fluorene derivatives of negative DC anisotropy, of the formula I
    Type: Application
    Filed: September 29, 2003
    Publication date: June 3, 2004
    Inventors: Matthias Bremer, Detlef Pauluth, Melanie Klasen-Memmer
  • Liquid crystalline medium
    Publication number: 20040099842
    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 1
    Type: Application
    Filed: December 8, 2003
    Publication date: May 27, 2004
    Inventors: Melanie Klasen-Memmer, Clarissa Weller, Matthias Bremmer, Detlef Pauluth, Hans-Rolf Duebal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Liquid-crystalline medium
    Patent number: 6740369
    Abstract: Liquid-crystalline mediums based on a mixture of polar compounds of negative dielectric anisotropy, comprising one or more compounds of the general formula I, in which R11 is an alkyl group having from 1 to 12 carbon atoms or an alkenyl group having from 2 to 12 carbon atoms, and R12 is an alkenyl group having from 2 to 12 carbon atoms, are useful for electro-optical display elements such as active matrix addressed displays which operate on the ECB and/or VA principles.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: May 25, 2004
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Malgorzata Rillich, Volker Reiffenrath
  • Liquid-crystalline medium
    Publication number: 20040058158
    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 1
    Type: Application
    Filed: September 16, 2003
    Publication date: March 25, 2004
    Applicant: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Eike Poetsch, Volker Reiffenrath
  • Fluorinated naphthalenes, liquid-crystal mixtures comprising them, and liquid-crystal displays
    Publication number: 20040041125
    Abstract: Compounds of the formula (I) 1
    Type: Application
    Filed: June 9, 2003
    Publication date: March 4, 2004
    Applicant: Merck Patent GmbH
    Inventors: Matthias Bremer, Melanie Klasen-Memmer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Liquid-crystalline medium
    Publication number: 20040011996
    Abstract: The present invention relates to a liquid-crystalline medium based on a mixture of compounds of negative dielectric anisotropy comprising one or more polymerizable compounds, and to the use thereof for electro-optical purposes, and to displays containing this medium.
    Type: Application
    Filed: July 3, 2003
    Publication date: January 22, 2004
    Applicant: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Dagmar Klement, Matthias Bremer
  • Liquid-crystal medium, and electro-optical display containing same
    Publication number: 20030222245
    Abstract: A nematic liquid-crystal media which comprises
    Type: Application
    Filed: April 14, 2003
    Publication date: December 4, 2003
    Applicant: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Malgorzata Rillich
  • Fluorinated indenes and 1,7-dihydroindacenes of negative dielectric anisotrophy
    Publication number: 20030222243
    Abstract: Fluorinated indenes and 1,7-dihydroindacenes of the general formulae (I) and (II) of negative dielectric anisotropy (&Dgr;&egr;<0) 1
    Type: Application
    Filed: April 4, 2003
    Publication date: December 4, 2003
    Applicant: Merck Patent GmbH
    Inventors: Lars Lietzau, Melanie Klasen-Memmer, Matthias Bremer
  • Oxabicyclooctanes
    Publication number: 20030215580
    Abstract: The present invention relates to oxabicyclooctanes of the general formula I.
    Type: Application
    Filed: October 1, 2002
    Publication date: November 20, 2003
    Applicant: Merck Patent GmbH
    Inventors: Matthias Bremer, Michael Heckmeier, Melanie Klasen-Memmer, Harald Lannert
  • Polymerisable monocyclic compounds
    Publication number: 20030160210
    Abstract: The invention relates to polymerisable monocyclic compounds, their use in liquid crystal mixtures, polymers and polymer films, and the use of the compounds, mixtures, polymers and polymer films in optical, electrooptical and electronic devices, for decorative and security applications.
    Type: Application
    Filed: December 23, 2002
    Publication date: August 28, 2003
    Applicant: MERCK PATENT GMBH
    Inventors: Matthias Bremer, Melanie Klasen-Memmer, Dagmar Klement, Stephan Derow
  • Liquid-crystalline medium
    Publication number: 20030071244
    Abstract: Liquid-crystalline mediums based on a mixture of polar compounds of negative dielectric anisotropy, comprising one or more compounds of the general formula I, 1
    Type: Application
    Filed: July 30, 2002
    Publication date: April 17, 2003
    Applicant: MERCK PATENT GESELLSCHAFT
    Inventors: Melanie Klasen-Memmer, Malgorzata Rillich, Volker Reiffenrath