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).

  • Publication number: 20180244994
    Abstract: The invention relates to dielectrically positive liquid crystalline media comprising a compound of formula I wherein the parameters have the meaning given in claim 1 and to liquid crystal displays comprising these media, especially to active matrix displays and in particular to TN and IPS mode displays.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 30, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Martina WINDHORST, Christian HOCK, Andreas POHLE, Axel JANSEN
  • Publication number: 20180230382
    Abstract: 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: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
  • Patent number: 10047292
    Abstract: The invention relates to a liquid-crystalline medium, characterized 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: Grant
    Filed: November 17, 2011
    Date of Patent: August 14, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Sabine Schoen
  • Publication number: 20180223187
    Abstract: The present invention relates to a liquid-crystalline medium (LC medium) which is distinguished by the fact that it comprises one or more compounds of the formula 1 and one or more compounds of the formula 2 and one or more compounds selected from formulae 3, 4 and 5, in which the individual radicals have the meanings according to Claim 1, and to the use thereof for electro-optical purposes and to LC displays containing this medium.
    Type: Application
    Filed: July 22, 2016
    Publication date: August 9, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Andreas POHLE, Sabine SCHOEN
  • Patent number: 9982194
    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: Grant
    Filed: March 31, 2015
    Date of Patent: May 29, 2018
    Assignee: Mereck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Marcus Reuter, Rocco Fortte, Detlef Pauluth, Matthias Bremer, Helmut Haensel, Harald Hirschmann
  • Patent number: 9951274
    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: Grant
    Filed: December 18, 2014
    Date of Patent: April 24, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Monika Bauer, Martina Windhorst, Marcus Reuter, Volker Reiffenrath, Matthias Bremer
  • Publication number: 20180030020
    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: September 20, 2017
    Publication date: February 1, 2018
    Applicant: Merck Patent GmbH
    Inventors: Volker Reiffenrath, Matthias Bremer, Rocco Fortte, Harald Hirschmann, Martin Engel
  • Publication number: 20180030350
    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: October 2, 2017
    Publication date: February 1, 2018
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Constanze BROCKE, Rocco FORTTE, Matthias BREMER, Sabine SCHOEN
  • Publication number: 20170362506
    Abstract: Liquid-crystalline medium contains at least one compound of formula I, and at least one compound formulae ST-1 to ST-17 and 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, UB-FFS, U-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: March 10, 2016
    Publication date: December 21, 2017
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Sabine SCHOEN
  • Publication number: 20170306232
    Abstract: The invention relates to a liquid-crystalline medium and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PM-VA, SS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: April 20, 2017
    Publication date: October 26, 2017
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Martina WINDHORST
  • Patent number: 9611428
    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, characterized 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: Grant
    Filed: October 4, 2013
    Date of Patent: April 4, 2017
    Assignee: MERCK PATENT GMBH
    Inventors: Markus Czanta, Harald Hirschmann, Izumi Saito, Volker Reiffenrath, Lars Lietzau
  • Publication number: 20170044438
    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: October 28, 2016
    Publication date: February 16, 2017
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Constanze BROCKE, Rocco FORTTE, Matthias BREMER, Sabine SCHOEN
  • Publication number: 20170044437
    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: October 28, 2016
    Publication date: February 16, 2017
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Constanze BROCKE, Rocco FORTTE, Matthias BREMER, Sabine SCHOEN
  • Publication number: 20170037315
    Abstract: The present invention relates to a liquid-crystalline medium (LC medium), to the use thereof for electrooptical purposes and to LC displays comprising this medium.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Applicant: Merck Patent GmbH
    Inventors: Harald HIRSCHMANN, Michael WITTEK, Renate SEEGER, Brigitte SCHULER, Martina WINDHORST, Christian HOCK, Volker REIFFENRATH
  • Patent number: 9512102
    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: Grant
    Filed: April 22, 2015
    Date of Patent: December 6, 2016
    Assignee: MERCK PATENT GMBH
    Inventors: Volker Reiffenrath, Harald Hirschmann
  • Publication number: 20160319194
    Abstract: 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 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: July 13, 2016
    Publication date: November 3, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Marcus REUTER, Volker REIFFENRATH
  • Publication number: 20160264865
    Abstract: The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula IA, IB, IC, ID and/or IE, in which Z1 denotes a single bond, —CH2CH2—, —CH?CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C?C—, —CF?CF— or —CH?CHCHO—, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, UB-FFS, PS-FFS, PS-IPS or IPS effect.
    Type: Application
    Filed: March 9, 2016
    Publication date: September 15, 2016
    Applicant: MERCK PATENT GmbH
    Inventors: Harald HIRSCHMANN, Monika BAUER, Martina WINDHORST, Martin ENGEL
  • Publication number: 20160264866
    Abstract: Disclosed are a liquid-crystalline medium which contains at least one compound of formula IA, and in addition at least one compound of formula CC-n-V and/or CC-V-V1, where the percentage proportion of the compound(s) of formula IA is greater than or equal to the percentage proportion of CC-n-V, and/or the percentage proportion of the compound(s) of formula IA is greater than the percentage proportion of CC-V-V1, where the percentage proportion is based on the liquid-crystalline medium, and the use thereof in active-matrix displays, in particular based on the VA, PSA, PVA, PS-VA, SS-VA, SA-VA, PA-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 15, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald HIRSCHMANN, Martina WINDHORST, Volker REIFFENRATH
  • Publication number: 20160208170
    Abstract: The invention relates to a liquid-crystalline medium which comprises the compound of the formula I, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PM-VA, SS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 21, 2016
    Applicant: MERCK PATENT GMBH
    Inventors: Harald Hirschmann, Martina Windhorst, I
  • Patent number: 9376622
    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: Grant
    Filed: December 9, 2013
    Date of Patent: June 28, 2016
    Assignee: Merck Patent GmbH
    Inventors: Harald Hirschmann, Andreas Pohle, Markus Czanta, Christian Schoenefeld, Elvira Montenegro, Volker Reiffenrath