Patents by Inventor Harald Hirschmann

Harald Hirschmann 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
    Publication number: 20160168464
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 and R2 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Application
    Filed: February 22, 2016
    Publication date: June 16, 2016
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Volker REIFFENRATH
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20160152587
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, Z1, Z2 and L1-3 have the meanings defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.
    Type: Application
    Filed: June 16, 2015
    Publication date: June 2, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Constanze BROCKE, Rocco FORTTE, Matthias BREMER, Sabine SCHOEN
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20160090533
    Abstract: Liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C?C—, —CF2O—, —OCF2—, —CH?CH—, ?—O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, L1 and L2 each, independently of one another, denote F, Cl, CF3 or CHF2, and the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, PS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: September 15, 2015
    Publication date: March 31, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Matthias BREMER, Rocco FORTTE, Volker REIFFENRATH, Martin ENGEL, Nico JOHN, Christoph MARTEN
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20160053178
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, wherein the radicals R11, L1, L2, n and A are as defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PA-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect.
    Type: Application
    Filed: August 21, 2015
    Publication date: February 25, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Martina WINDHORST, Monika BAUER, Volker REIFFENRATH, Matthias BREMER
  • Liquid crystalline medium and liquid crystalline display
    Patent number: 9212309
    Abstract: The present invention relates to dielectrically positive liquid-crystalline media comprising one or more compounds of the formula I in which the parameters have the respective meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to TN, IPS and FFS displays.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: December 15, 2015
    Assignee: Merck Patent GmbH
    Inventors: Markus Czanta, Harald Hirschmann, Sven Baran, Lars Lietzau
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20150315472
    Abstract: The invention relates to compounds of the formula I and to a liquid-crystalline medium which comprises one or more compounds of the formula I, in which R1, X1, X, Y1 and Y2 have the meanings indicated in Claim 1, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.
    Type: Application
    Filed: December 9, 2013
    Publication date: November 5, 2015
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Andreas POHLE, Markus CZANTA, Christian SCHOENEFELD, Elvira MONTENEGRO, Volker REIFFENRATH
  • 4,6-DIFLUORODIBENZOTHIOPHENE DERIVATIVES
    Publication number: 20150299161
    Abstract: 4,6-difluorodibenzothiophene compounds of formula I the preparation thereof, the use thereof as components in liquid-crystalline media and electro-optical display elements which contain the liquid-crystalline media.
    Type: Application
    Filed: April 22, 2015
    Publication date: October 22, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Volker REIFFENRATH, Harald HIRSCHMANN
  • LIQUID CRYSTALLINE MEDIUM
    Publication number: 20150299574
    Abstract: The present invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C?C—, —CF2O—, —OCF2—, —CH?CH—, —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, L1 and L2 each, independently of one another, denote F, Cl, CF3 or CHF2, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, SS-VA, SA-VA, PS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: April 22, 2015
    Publication date: October 22, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Volker REIFFENRATH
  • LIQUID-CRYSTALLINE MEDIUM AND ELECTRO-OPTICAL LIQUID-CRYSTAL DISPLAY
    Publication number: 20150284635
    Abstract: The invention relates to an electro-optical liquid-crystal display having a re-alignment layer for the re-alignment of the liquid crystals whose field has a component, crucial for the re-alignment, parallel to the liquid-crystal layer, containing a liquid-crystalline medium, characterised in that it contains at least one compound of the formula (I), at least one compound of the formula (II), and at least one compound of the formula (III), in which the parameters R11 to R31, X11 and X21 have the meanings indicated in Claim 1.
    Type: Application
    Filed: October 4, 2013
    Publication date: October 8, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Markus Czanta, Harald Hirschmann, Izumi Saito, Volker Reiffenrath, Lars Lietzau
  • 4,6-DIFLUORODIBENZOFURAN DERIVATIVES
    Publication number: 20150259602
    Abstract: 4,6-difluorodibenzofuran derivatives of the formula I the preparation thereof, the use thereof as components in liquid-crystalline media and electro-optical display elements which contain the liquid-crystalline media.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 17, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Volker REIFFENRATH, Matthias BREMER, Rocco FORTTE, Harald HIRSCHMANN, Martin ENGEL
  • LIQUID-CRYSTALLINE MEDIA
    Publication number: 20150203758
    Abstract: The invention relates to liquid-crystalline media which can be used, in particular, for electro-optical displays having active-matrix addressing based on the ECB effect and for IPS (in-plane switching) displays or FFS (fringe field switching) displays.
    Type: Application
    Filed: March 31, 2015
    Publication date: July 23, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20150175884
    Abstract: The invention relates to compounds of the formula I, to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, L1, L2, L3 and L4 have the meanings indicated herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PM-VA, PALC, IPS, PS-IPS, SA-VA, SS-VA, FFS or PS-FFS effect.
    Type: Application
    Filed: December 18, 2014
    Publication date: June 25, 2015
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Volker REIFFENRATH, Matthias BREMER
  • Thiophene compounds for liquid-crystalline media
    Patent number: 8871952
    Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, V, a, b and c have the meanings indicated in Claim 1, and 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: November 20, 2013
    Date of Patent: October 28, 2014
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Louise Diane Farrand, Markus Czanta, Harald Hirschmann, Michael Wittek, Izumi Saito, Brigitte Schuler
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20140110631
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 and R2 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Volker REIFFENRATH
  • Liquid crystal medium
    Patent number: 8673178
    Abstract: The invention relates to compounds of the formula I in which R0, A0, A1, A2, Z0, Z1, Z2, L1, L2, X, l, m and n have the meanings indicated in claim 1, and to the use thereof in liquid-crystalline media, and to liquid-crystalline media comprising one or more compounds of the formula I in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: March 18, 2014
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Michael Wittek, Brigette Schuler, Volker Reiffenrath, Axel Jansen, Christian Hock, Harald Hirschmann
  • THIOPHENE COMPOUNDS FOR LIQUID-CRYSTALLINE MEDIA
    Publication number: 20140070141
    Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, V, a, b and c have the meanings indicated in Claim 1, and 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: November 20, 2013
    Publication date: March 13, 2014
    Applicant: MERCK PATENT GmbH
    Inventors: Lars LIETZAU, Louise Diane FARRAND, Markus CZANTA, Harald HIRSCHMANN, Michael WITTEK, Izumi SAITO, Brigitte SCHULER
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20140061534
    Abstract: The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I, in which R1 has the meanings indicated in claim 1, and to the use thereof in liquid-crystalline media and in electro-optical liquid-crystal displays.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Inventors: Mark GOEBEL, Harald HIRSCHMANN, Lars LIETZAU, Volker REIFFENRATH, Sabine SCHOEN, Brigitte SCHULER
  • Thiophene compounds for liquid-crystalline media
    Patent number: 8609714
    Abstract: The invention relates to liquid-crystalline compounds of the formula I in which R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, V, a, b and c have the meanings indicated in Claim 1, and 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: February 16, 2010
    Date of Patent: December 17, 2013
    Assignee: MERCK PATENT GmbH
    Inventors: Lars Lietzau, Louise Diane Farrand, Markus Czanta, Harald Hirschmann, Michael Wittek, Izumi Saito, Brigitte Schuler
  • Liquid-crystalline medium
    Patent number: 8585922
    Abstract: The invention relates to a liquid-crystalline medium comprising one or more compounds of the formula I in which R0, ring A and L1-4 have the meanings indicated in Claim 1, and to the use thereof in electro-optical liquid-crystal displays.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: November 19, 2013
    Assignee: MERCK PATENT GmbH
    Inventors: Michael Wittek, Brigitte Schuler, Harald Hirschmann, Volker Reiffenrath, Markus Czanta, Christian Schoenefeld
  • LIQUID-CRYSTALLINE MEDIUM
    Publication number: 20130256596
    Abstract: The invention relates to a liquid-crystalline medium, characterised in that it comprises one or more compounds of the formula IA, and one or more compounds of the formula IB, in which RA, RB, XA, XB and Y1-13 have the meanings indicated in claim 1, and to the use thereof for electro-optical purposes, in particular for shutter glasses, 3D applications, in TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, PS-FFS and PS-VA-IPS displays.
    Type: Application
    Filed: November 17, 2011
    Publication date: October 3, 2013
    Applicant: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Sabine Schoen