Patents by Inventor Barbara Hornung

Barbara Hornung 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: 9388338
    Abstract: Liquid crystal mixture comprising one or several compounds of formula (I) wherein R1, R2, R3, R4, R5, R6, M1, M2, X, A, and m are defined herein.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: July 12, 2016
    Assignee: Merck Patent GmbH
    Inventors: Ji Li, Toshiaki Nonaka, Ayako Ogawa, Hans-Rolf Dübal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 9260662
    Abstract: Liquid crystal mixture comprising one or several compounds of formula (I) wherein R1, R2, R3, R4, R5, R6, M1, M2, X, A, and m are defined herein.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: February 16, 2016
    Assignee: Merck Patent GmbH
    Inventors: Ji Li, Toshiaki Nonaka, Ayako Ogawa, Hans-Rolf Dübal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 7560147
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula I in which R11, R12, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: July 14, 2009
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Detlef Pauluth, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Publication number: 20080193681
    Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds which comprises at least one compound of the formula I in which R11, R12, A1, A2, Z1, Z2, m and n have the meanings indicated in claim 1, and to the use thereof for an active-matrix display based on the ECB, PALC or IPS effect.
    Type: Application
    Filed: March 8, 2006
    Publication date: August 14, 2008
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Detlef Pauluth, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 7399505
    Abstract: Compounds of the formula (I) are described in which M1 is, for example, —CO—O— or a single bond A1 is, for example, 1,4-phenylene, R5 has the same possible definitions specified for R1, with the exception of -M1-A1-R5, but independently of the definition of R1 G1-G2 is CH2CH2, CH?CH, CF2CF2, CF?CF, CF?CH, CH?CF X1, X2, X3, X4, X5 are each independently H or F R1, Y1, Y2 are each independently a) H b) F where Y1, R1, (R1 and Y1) or (R1 and Y2) may also have the definitions c) and/or d), but only in each case not more than one of (R1 and Y1) and of (R1 and Y2) may have the definition d) c) is, for example, a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, d) -M1-A1-R5 with the following provisos: a) at least one of X1, X2, X3, X4, X5, G1-G2 is or contains F b1) when at least one of Y1 and X1 is F and/or G1-G2 contains F, it is possible for R1, X2, X3, X4 not to be F b2) when at least one of R1,
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: July 15, 2008
    Assignee: Merck Patent GmbH
    Inventors: Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
  • Patent number: 7371437
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R11, R12 and have the meanings indicated in claim 1, is described. Also described is the use thereof for an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: May 13, 2008
    Assignee: Merck Patent GmbH
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 7297378
    Abstract: Compounds of the formula (I) in which R1, R2, p, q, G and X are each as defined in the description, use of compounds of the formula (I) in liquid-crystal mixtures, liquid-crystal mixture comprising one or more compounds of the formula (I), and a liquid-crystal display comprising an inventive liquid-crystal mixture.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: November 20, 2007
    Assignee: Merck Patent GmbH
    Inventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung
  • Patent number: 7297379
    Abstract: A compound of the formula (I) is described where R1 and R2 are defined in the specification and p=q=r=0 or 1 with p+q+r?0. The compound of formula (I) has high dielectric anisotropy, thermally stable, fast response time and high voltage holding ratio, which is used as a liquid crystal medium for the liquid-crystal displays such as ECB, in-plane-switching (IPS) and VA display mode.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: November 20, 2007
    Assignee: Merck Patent GmbH
    Inventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung
  • Patent number: 7282246
    Abstract: Concerning the compound of the formula (I) R1, R3 are each independently, for example, H R2, R4 are each independently, for example, H X1, X2 are each independently H or F M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond A1 is, for example, 1,4-phenylene, and R5 has the same possible definitions as specified for R2 and R4, with the exception of —M1-A1-R5, but independently of the particular definitions of R2 and R4 with the following provisos: 1) at least one of X1, X2 has to be F 2) R1, R2, R3 and R4 must not at the same time be H 3) at most two of R1, R2, R3 and R4 may be c).
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: October 16, 2007
    Assignee: Merck Patent GmbH
    Inventors: Wolfgang Schmidt, Barbara Hornung, Rainer Wingen
  • Patent number: 7255900
    Abstract: In the compound of the formula (I), where: R1, R2 are each independently, for example, H or a straight-chain or branched alkyl radical p, q are each independently 0 or 1, i.e. at the value zero, —H is present at the appropriate position instead of —F M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO——O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond A1 is, for example, 1,4-phenylene R5 has the same possible definitions as specified for R1 and R2, with the exception of —M1—A1—R5, but independently of the definition of R1 and R2 X is H, F, OF3, CF3, OCF2H with the following provisos: a) at least one of p, q has to be 1 b) R1 and R2 must not at the same time be H c) R2 and X must not at the same time be H.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 14, 2007
    Assignee: Merck Patent GmbH
    Inventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung
  • Publication number: 20070051920
    Abstract: A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R11, R12 and have the meanings indicated in claim 1, is described. Also described is the use thereof for an active-matrix display based on the VA, ECB, PALC, FFS or IPS effect.
    Type: Application
    Filed: August 8, 2006
    Publication date: March 8, 2007
    Inventors: Melanie Klasen-Memmer, Matthias Bremer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 7052742
    Abstract: Fluorinated five-membered ring compounds of the formula (I) R1—X—(A1—M1)a—(A2—M2)b—A3—Y—E ??(I) where E is a radical T—Z—R2 containing a five-membered ring and, for example, T is undirected and is 4-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,4-diyl, 5-fluorothiophene-2,4-diyl, furan-2,5-diyl, furan-2,4-diyl, isoxazole-3,5-diyl, thiazole-2,5-diyl, thiazole-2,4-diyl, cyclopentane-1,3-diyl or cyclopentene-1,3-diyl, R1 and R2 are hydrogen, X is a single bond, —O—, OC(?O)—, —C(?O)O— or —OC(?O)O—, Y is —OC(?O)—, —OCH2—, —CH2CH2—, Z is a single bond or —O—, A1, A2, A3 are each, independently of one another, phenylene-1,4-diyl, M1, M2 are undirected and are each, independently of one another, —OC(?O)—, —OCH2—, —CH2CH2—, —OC(?O)CH2CH2—, —OCH2CH2CH2—, —C?C—, —CH2CH2CH2CH2— or a single bond, a, b are each, independently of one another, 0 or 1, are used in FLC mixtures.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: May 30, 2006
    Assignee: Clariant International Ltd.
    Inventors: Barbara Hornung, Toshiaki Nonaka, Ayako Ogawa, Wolfgang Schmidt, Rainer Wingen
  • Patent number: 7026021
    Abstract: Compounds of the general formula (I) where: R1, R2 are each independently a) H b) -M1-A1-R5 c) a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, where c1) one or more nonadjacent and nonterminal CH2 groups may be replaced by —O—, —C(?O)O—, —O—C(?O)—, —O—C(?O)—O—, —C(?O)— or —Si(CH3)2—, and/or c2) one CH2 group may be replaced by —C?C—, cyclopropane-1,2-diyl, cyclobutane-1,3-diyl, cyclohexane-1,4-diyl or phenylene-1,4-diyl, and/or c3) one or more hydrogen atoms may be replaced by F and/or Cl, p, q are each independently 0 or 1 G1-G2 is —CH2CH—, —CH?C—, —CH2CH2CH— or —CH?CH—CH— M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond, A1 is 1,4-phenylene where one or two hydrogen atoms may be replaced by F, Cl, CN and/or OCF3, or up to three hydrogen atoms may be replaced by
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: April 11, 2006
    Assignee: Merck Patent GmbH
    Inventors: Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
  • Patent number: 7018685
    Abstract: The invention relates to fluorinated aromatics of the formula (I) where X is CH2, C?O, CF2, O or S, Y is H or F, with the proviso that Y has to be F when X is CH2, and where the other parameters are as defined in claim 1, and also to their use in liquid-crystal mixtures, and also to liquid-crystal mixtures comprising these compounds and to liquid-crystal displays comprising these mixtures.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: March 28, 2006
    Assignee: Merck Patent GmbH
    Inventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung
  • Patent number: 7019811
    Abstract: The liquid-crystal switching or display device comprises a chiral smectic liquid-crystal mixture, where the ratio ?/? of the angle between the rubbing direction and the smectic layer normal to the tilt angle in the liquid-crystal mixture is at least 0.41. Preferably, the liquid-crystal mixture has the phase sequence I-N-C and the tilt angle ? at 25° C. is between 19° and 39°.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 28, 2006
    Assignee: Clariant International, Ltd.
    Inventors: Hans-Rolf Dübal, Barbara Hornung, Toshiaki Nonaka
  • Patent number: 7014890
    Abstract: Compounds of the formula (I) in which the parameters are as defined herein, are suitable for use in liquid-crystal media and liquid-crystal displays which contain these media.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: March 21, 2006
    Assignee: Merck Patent GmbH
    Inventors: Matthias Bremer, Melanie Klasen-Memmer, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Publication number: 20060011886
    Abstract: Liquid crystal mixture comprising one or several compounds of formula (I) (I) wherein R1, R2, R3, R4, R5, R6, M1, M2, X, A, and m are defined herein.
    Type: Application
    Filed: August 11, 2005
    Publication date: January 19, 2006
    Inventors: Ji Li, Toshiaki Nonaka, Ayako Ogawa, Hans-Rolf Dubal, Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
  • Publication number: 20050274929
    Abstract: Concerning the compound of the formula (I) R1, R3 are each independently, for example, H R2, R4 are each independently, for example, H X1, X2 are each independently H or F M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond A1 is, for example, 1,4-phenylene, and R5 has the same possible definitions as specified for R2 and R4, with the exception of -M1-A1-R5, but independently of the particular definitions of R2 and R4 with the following provisos: 1) at least one of X1, X2 has to be F 2) R1, R2, R3 and R4 must not at the same time be H 3) at most two of R1, R2, R3 and R4 may be c).
    Type: Application
    Filed: April 4, 2005
    Publication date: December 15, 2005
    Inventors: Wolfgang Schmidt, Barbara Hornung, Rainer Wingen
  • Publication number: 20050258400
    Abstract: Compounds of the formula (I) are described in which M1 is, for example, —CO—O— or a single bond A1 is, for example, 1,4-phenylene, R5 has the same possible definitions specified for R1, with the exception of -M1-A1-R5, but independently of the definition of R1 G1-G2 is CH2CH2, CH?CH, CF2CF2, CF?CF, CF?CH, CH?CF X1, X2, X3, X4, X5 are each independently H or F R1, Y1, Y2 are each independently a) H b) F where Y1, R1, (R1 and Y1) or (R1 and Y2) may also have the definitions c) and/or d), but only in each case not more than one of (R1 and Y1) and of (R1 and Y2) may have the definition d) c) is, for example, a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, d) -M1-A1-R5 with the following provisos: a) at least one of X1, X2, X3, X4, X5, G1-G2 is or contains F b1) when at least one of Y1 and X1 is F and/or G1-G2 contains F, it is possible for R1, X2, X3, X4 not to be F b2) when at least one
    Type: Application
    Filed: May 5, 2005
    Publication date: November 24, 2005
    Inventors: Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
  • Publication number: 20050258397
    Abstract: Compounds of the formula (I) in which R1, R2, p, q, G and X are each as defined in the description, use of compounds of the formula (I) in liquid-crystal mixtures, liquid-crystal mixture comprising one or more compounds of the formula (I), and a liquid-crystal display comprising an inventive liquid-crystal mixture.
    Type: Application
    Filed: April 26, 2005
    Publication date: November 24, 2005
    Inventors: Wolfgang Schmidt, Rainer Wingen, Barbara Hornung