Patents by Inventor Lars Lietzau

Lars Lietzau 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).

  • Patent number: 11939511
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: March 26, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
  • Patent number: 11905450
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 20, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito, Rocco Fortte
  • Patent number: 11884862
    Abstract: Compounds of the formula I in which R1 is alkyl or alkoxy in which CH2 groups are optionally replaced, and X1 is alkyl OCF3, CF3, CHF2, OCF2CF3, CCF2CHFCF3, OCF?CF2, OCH?CF2 or F, a liquid-crystalline medium containing a compound of formula I, and use thereof in electro-optical liquid-crystal displays, in particular in TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, HB-FFS or PS-FFS-, positive VA displays and in shutter spectacles for 3D effects and LC lenses.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: January 30, 2024
    Assignee: MERCK PATENT GMBH
    Inventors: Achim Goetz, Christian Hock, Lars Lietzau, Mark Goebel
  • Publication number: 20230068853
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: December 9, 2019
    Publication date: March 2, 2023
    Applicant: Merck Patent GmbH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI
  • Patent number: 11542433
    Abstract: The invention relates to compounds of the formula I, in which R, A, n, L1, L2, L3 and X have the meanings given in Claim 1, to a process for their preparation, and to liquid-crystalline media comprising at least one compound of the formula I and electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: January 3, 2023
    Assignee: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Volker Reiffenrath, Mark Goebel
  • Publication number: 20220251448
    Abstract: A compound of formula I, Further, a method of production of a compound of formula I, the use of said compounds in LC media, and LC media comprising one or more compounds of formula I. Further, a method of production of such LC media, the use of such media in LC devices, and a LC device comprising a LC medium according to the present invention. Also, a process for the fabrication of such a liquid crystal display and the use of the liquid crystal mixtures according to the invention for the fabrication of such a liquid crystal display.
    Type: Application
    Filed: June 2, 2020
    Publication date: August 11, 2022
    Applicant: Merck Patent GmbH
    Inventors: Lars Lietzau, Simon Siemianowski
  • Patent number: 11370969
    Abstract: A liquid-crystalline medium containing one or more compounds of formula IA, and the use thereof in an active-matrix display, in particular in a VA, IPS, U-IPS, FFS, UB-FFS, SA-VA, SA-FFS, PS-VA, PS-OCB, PS-IPS, PS-FFS, PS-UB-FFS, PS-posi-VA, PS-TN, polymer stabilised SA-VA or polymer stabilised SA-FFS display.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: June 28, 2022
    Assignee: Merck Patent GmbH
    Inventors: Martin Engel, Sebastian Hofmeyer, Christoph Marten, Lars Lietzau
  • Patent number: 11352560
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: June 7, 2022
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
  • Patent number: 11312907
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: April 26, 2022
    Assignee: Merck Patent GmbH
    Inventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
  • Publication number: 20220106525
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: October 7, 2019
    Publication date: April 7, 2022
    Applicant: MERCK PATENT GMBH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI
  • Patent number: 11236063
    Abstract: Compounds of the formula I in which groups and parameters that occur have the definitions given in the disclosure. Preparation methods for these compounds. Uses of the compounds as components in liquid-crystalline media. Electrooptical display elements comprising the liquid-crystalline media.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: February 1, 2022
    Assignee: MERCK PATENT GMBH
    Inventors: Lars Lietzau, Achim Goetz, Harald Hirschmann, Martin Engel
  • Publication number: 20210371749
    Abstract: The invention relates to compounds of the formula I, in which R, A, n, L1, L2, L3 and X have the meanings given in Claim 1, to a process for their preparation, and to liquid-crystalline media comprising at least one compound of the formula I and electro-optical displays containing a liquid-crystalline medium of this type.
    Type: Application
    Filed: July 17, 2017
    Publication date: December 2, 2021
    Applicant: MERCK PATENT GMBH
    Inventors: Lars LIETZAU, Volker REIFFENRATH, Mark GOEBEL
  • Publication number: 20210292652
    Abstract: The invention relates to a compound of formula I, R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: April 18, 2019
    Publication date: September 23, 2021
    Applicant: MERCK PATENT GMBH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
  • Publication number: 20210284912
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: April 18, 2019
    Publication date: September 16, 2021
    Applicant: MERCK PATENT GMBH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO, Rocco FORTTE
  • Patent number: 11053442
    Abstract: The invention relates to a liquid crystal mixture characterised in that it comprises one or more photoreactive mesogens of formula I wherein the parameters and groups occurring are defined as indicated in claim 1, to a process for the fabrication of liquid crystal displays using these liquid crystal mixtures and to a liquid crystal display obtainable by this process. The invention further relates to new compounds of formula I.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: July 6, 2021
    Assignee: MERCK PATENT GMBH
    Inventors: Kevin Adlem, Alex Davis, Joseph Sargent, Ian Charles Sage, Edward Plummer, Izumi Saito, Rocco Fortte, Helga Haas, Lars Lietzau
  • Publication number: 20210139451
    Abstract: The invention relates to compounds of the formula I in which groups and parameters that occur have the definitions given in Claim 1, to the preparation thereof, to the use thereof as components in liquid-crystalline media and to electrooptical display elements comprising the liquid-crystalline media of the invention.
    Type: Application
    Filed: June 11, 2018
    Publication date: May 13, 2021
    Applicant: MERCK PATENT GMBH
    Inventors: Lars LIETZAU, Achim GOETZ, Harald HIRSCHMANN, Martin ENGEL
  • Publication number: 20210130693
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: April 18, 2019
    Publication date: May 6, 2021
    Applicant: Merck Patent GmbH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
  • Publication number: 20210087469
    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: December 4, 2020
    Publication date: March 25, 2021
    Inventors: Mark GOEBEL, Harald HIRSCHMANN, Lars LIETZAU, Volker REIFFENRATH, Sabine SCHOEN, Brigitte SCHULER
  • Publication number: 20210071081
    Abstract: The invention relates to a compound of formula I, wherein R11, R21, A11, A, Z, X11, X21, Y11, Y12, Sp11, Sp21, o and p have one of the meanings as given in claim 1. The invention further relates to method of production of a compound of formula I, to the use of said compounds in LC media and to LC media comprising one or more compounds of formula I. Further, the invention relates to a method of production of such LC media, to the use of such media in LC devices, and to LC device comprising a LC medium according to the present invention. The present invention further relates to a process for the fabrication such liquid crystal display and to the use of the liquid crystal mixtures according to the invention for the fabrication of such liquid crystal display.
    Type: Application
    Filed: April 18, 2019
    Publication date: March 11, 2021
    Applicant: Merck Patent GmbH
    Inventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
  • Publication number: 20200255740
    Abstract: The invention relates to a liquid crystal mixture characterised in that it comprises one or more photoreactive mesogens of formula I wherein the parameters and groups occurring are defined as indicated in claim 1, to a process for the fabrication of liquid crystal displays using these liquid crystal mixtures and to a liquid crystal display obtainable by this process. The invention further relates to new compounds of formula I.
    Type: Application
    Filed: December 2, 2016
    Publication date: August 13, 2020
    Applicant: MERCK PATENT GMBH
    Inventors: Kevin ADLEM, Alex DAVIS, Joseph SARGENT, Ian Charles SAGE, Edward PLUMMER, Izumi SAITO, Rocco FORTTE, Helga HAAS, Lars LIETZAU