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).
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Patent number: 11939511Abstract: 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: GrantFiled: April 18, 2019Date of Patent: March 26, 2024Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Patent number: 11905450Abstract: 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: GrantFiled: April 18, 2019Date of Patent: February 20, 2024Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito, Rocco Fortte
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Patent number: 11884862Abstract: 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: GrantFiled: August 4, 2016Date of Patent: January 30, 2024Assignee: MERCK PATENT GMBHInventors: Achim Goetz, Christian Hock, Lars Lietzau, Mark Goebel
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Publication number: 20230068853Abstract: 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: ApplicationFiled: December 9, 2019Publication date: March 2, 2023Applicant: Merck Patent GmbHInventors: Lars LIETZAU, Simon SIEMIANOWSKI
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Patent number: 11542433Abstract: 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: GrantFiled: July 17, 2017Date of Patent: January 3, 2023Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Volker Reiffenrath, Mark Goebel
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Publication number: 20220251448Abstract: 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: ApplicationFiled: June 2, 2020Publication date: August 11, 2022Applicant: Merck Patent GmbHInventors: Lars Lietzau, Simon Siemianowski
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Patent number: 11370969Abstract: 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: GrantFiled: September 26, 2019Date of Patent: June 28, 2022Assignee: Merck Patent GmbHInventors: Martin Engel, Sebastian Hofmeyer, Christoph Marten, Lars Lietzau
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Patent number: 11352560Abstract: 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: GrantFiled: April 18, 2019Date of Patent: June 7, 2022Assignee: Merck Patent GmbHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Patent number: 11312907Abstract: 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: GrantFiled: April 18, 2019Date of Patent: April 26, 2022Assignee: Merck Patent GmbHInventors: Lars Lietzau, Simon Siemianowski, Izumi Saito
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Publication number: 20220106525Abstract: 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: ApplicationFiled: October 7, 2019Publication date: April 7, 2022Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Simon SIEMIANOWSKI
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Patent number: 11236063Abstract: 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: GrantFiled: June 11, 2018Date of Patent: February 1, 2022Assignee: MERCK PATENT GMBHInventors: Lars Lietzau, Achim Goetz, Harald Hirschmann, Martin Engel
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Publication number: 20210371749Abstract: 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: ApplicationFiled: July 17, 2017Publication date: December 2, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Volker REIFFENRATH, Mark GOEBEL
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Publication number: 20210292652Abstract: 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: ApplicationFiled: April 18, 2019Publication date: September 23, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20210284912Abstract: 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: ApplicationFiled: April 18, 2019Publication date: September 16, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO, Rocco FORTTE
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Patent number: 11053442Abstract: 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: GrantFiled: December 2, 2016Date of Patent: July 6, 2021Assignee: MERCK PATENT GMBHInventors: Kevin Adlem, Alex Davis, Joseph Sargent, Ian Charles Sage, Edward Plummer, Izumi Saito, Rocco Fortte, Helga Haas, Lars Lietzau
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Publication number: 20210139451Abstract: 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: ApplicationFiled: June 11, 2018Publication date: May 13, 2021Applicant: MERCK PATENT GMBHInventors: Lars LIETZAU, Achim GOETZ, Harald HIRSCHMANN, Martin ENGEL
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Publication number: 20210130693Abstract: 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: ApplicationFiled: April 18, 2019Publication date: May 6, 2021Applicant: Merck Patent GmbHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20210087469Abstract: 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: ApplicationFiled: December 4, 2020Publication date: March 25, 2021Inventors: Mark GOEBEL, Harald HIRSCHMANN, Lars LIETZAU, Volker REIFFENRATH, Sabine SCHOEN, Brigitte SCHULER
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Publication number: 20210071081Abstract: 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: ApplicationFiled: April 18, 2019Publication date: March 11, 2021Applicant: Merck Patent GmbHInventors: Lars LIETZAU, Simon SIEMIANOWSKI, Izumi SAITO
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Publication number: 20200255740Abstract: 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: ApplicationFiled: December 2, 2016Publication date: August 13, 2020Applicant: MERCK PATENT GMBHInventors: Kevin ADLEM, Alex DAVIS, Joseph SARGENT, Ian Charles SAGE, Edward PLUMMER, Izumi SAITO, Rocco FORTTE, Helga HAAS, Lars LIETZAU