Patents by Inventor Hans-Adolf Kurmeier
Hans-Adolf Kurmeier 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: 7445818Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.Type: GrantFiled: December 18, 2006Date of Patent: November 4, 2008Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Patent number: 7186447Abstract: Described are matrix liquid crystal displays having two plane parallel support plates which together with a frame form a cell, integrated non-linear elements for switching individual picture elements on the support plates and a nematic liquid crystal mixture which is present in the cell and has a positive dielectric anisotropy and high resistivity. The liquid crystal mixture has a nematic phase range of at least 60° C., a maximum viscosity at 20° C. of 30 mPa·s and a mean dielectricity constant ??8. The liquid crystal mixture contains: a) at least 10% by weight of a liquid-crystalline component B having one or more compounds of the following formulae: and b) up to 90% by weight of a liquid-crystalline component A having one or more compounds with a dielectric anisotropy of ?1.5 to 1.Type: GrantFiled: March 17, 2005Date of Patent: March 6, 2007Assignee: Merck Patent GmbHInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Patent number: 6905740Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.Type: GrantFiled: March 10, 2003Date of Patent: June 14, 2005Assignee: Merck Patent GmbHInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Publication number: 20030207046Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.Type: ApplicationFiled: March 10, 2003Publication date: November 6, 2003Applicant: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Patent number: 6562419Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.Type: GrantFiled: December 21, 1999Date of Patent: May 13, 2003Assignee: MERCK Patent Gesellschaft mit beschrankter HaftungInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Patent number: 6326066Abstract: 1,4-disubstituted 2,6-difluorobenzene compound of formula I wherein R is an alkyl or alkenyl radical, A1 and A2 are independently (a) a trans-1,4-cyclohexylene radical in which a CH2 group may be replaced by -O- and/or -S, (b) a 1,4-phenylene radical in which a CH group may be replaced by N, (c) 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, Z1 and Z2 are —CO—O—, —O—CO—, —CH2O—,—OCH2—, —CH2CH2—, —CH═CH—,—C≡C—or a single bond m and n are 0, 1, 2 or 3, (m+n) is 1, 2 or 3, X is R or F, Cl, CF3, —OCF3, or —OCHF2, —OCF5, —CN or —NCS with the provisos that at least one of the radicals A1 and A2 present in the molecule is and at least one of Z1 or Z2 is —COO—, are suitable as components of liquid-Type: GrantFiled: February 28, 2000Date of Patent: December 4, 2001Assignee: Merck Patent Gesellschaft mit Reschankter HaftungInventors: Eike Poetsch, Volker Meyer, Volker Reiffenrath, Andreas Wachtler, Ulrich Finkenzeller, Hans Adolf Kurmeier, Reinhard Hittich, Bernhard Rieger, David Coates, Simon Greenfield, Robert William Clemitson
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Patent number: 6210760Abstract: Supertwist liquid crystal displays having very short switching times are obtained if the nematic liquid crystal mixture contains at least one component chosen from group A consisting of compounds of the formulae AI to AVI: wherein R1 and R2 in each case independently of one another are each R and R is alkyl having 1-12 C atoms, wherein one or two non-adjacent CH2 groups can also be replaced by —O—, —CH═CH—, —CO—, —O—CO— or —CO—O—, and up to four other components.Type: GrantFiled: December 8, 1998Date of Patent: April 3, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Georg Weber, Herbert Plach, Takamasa Oyama, Hiroki Yoshitake, Bernhard Scheuble, Reinhard Hittich, Hans Adolf Kurmeier, Eike Poetsch, Klaus Peter Stahl
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Patent number: 6200654Abstract: 1,4-disubstituted 2,6-difluorobenzene compound of formula I wherein R is an alkyl or alkenyl radical, A1 and A2, in each case independently of one another, are (a) a trans-1,4-cyclohexylene radical in which a CH2 group may be replaced by —O— and/or —S, (b) a 1,4-phenylene radical in which a CH group may be replaced by N, (c) 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl or 1,2,3,4-tetrahydronaphthalene-2,6-diyl, Z1 and Z2 are —CO—O—, —O—CO—, —CH2—O—, —OCH2—, —CH2CH2—, —CH═CH—, —C≡C— or a single bond m and n are 0, 1, 2 or 3, (m+n) is 1, 2 or 3, X is R or F, Cl, CF3, —OCF3, or —OCHF2, —OCF5, —CN or —NCS with the proviso that at least one of the radicals A1 and A2 present in the molecule is are suitable as components of liquid-cType: GrantFiled: August 25, 1997Date of Patent: March 13, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Eike Poetsch, Volker Meyer, Volker Reiffenrath, Andreas Wachtler, Ulrich Finkenzeller, Hans Adolf Kurmeier, Reinhard Hittich, Bernhard Rieger, David Coates, Simon Greenfield, Robert William Clemitson
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Patent number: 6004479Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.Type: GrantFiled: June 5, 1995Date of Patent: December 21, 1999Assignee: Merck KGAAInventors: Georg Weber, Ludwig Pohl, Reinhard Hittich, Herbert Plach, Bernhard Scheuble, Takamasa Oyama, Bernhard Rieger, Hans Adolf Kurmeier, Ekkehard Bartmann
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Patent number: 5985171Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which Hal is fluorine or chlorine and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.Type: GrantFiled: December 29, 1997Date of Patent: November 16, 1999Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Bernhard Rieger, Reinhard Hittich, Hans Adolf Kurmeier, David Coates, Herbert Plach
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Patent number: 5876626Abstract: Supertwist liquid crystal displays having very short switching times are obtained if the nematic liquid crystal mixture contains at least one component chosen from group A consisting of compounds of the formulae AI to AVI: ##STR1## wherein R.sup.1 and R.sup.2 in each case independently of one another are each R and R is alkyl having 1-12 C atoms, wherein one or two non-adjacent CH.sub.2 groups can also be replaced by --O--, --CH.dbd.CH--, --CO--, --O--CO-- or --CO--O--, and up to four other components.Type: GrantFiled: December 7, 1994Date of Patent: March 2, 1999Assignee: Merck patent Gesellschaft mit Beschrankter HaftungInventors: Georg Weber, Herbert Plach, Takamasa Oyama, Hiroki Yoshitake, Bernhard Scheuble, Reinhard Hittich, Hans Adolf Kurmeier, Eike Poetsch, Klaus Peter Stahl
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Patent number: 5746941Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which Hal is fluorine or chlorine and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.Type: GrantFiled: December 27, 1994Date of Patent: May 5, 1998Assignee: Merck Patent Gesellschaft MIT Beschrankter HaftungInventors: Bernhard Rieger, Reinhard Hittich, Hans Adolf Kurmeier, David Coates, Herbert Plach
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Patent number: 5641429Abstract: Fluorobenzene derivatives of formula I, ##STR1## in which R an alkenyl radical as further defined in the specification,A.sup.1 and A.sup.2 are a trans-1,4-cyclohexylene radical, 1,4-phenylene radical or other cyclic structure as further defined in the specification,Z.sup.1 and Z.sup.2 are a single bond or bridging group,L is H or F,m is 0, 1 or 2,Y is F or Cl, andQ is a single bond.Type: GrantFiled: September 18, 1995Date of Patent: June 24, 1997Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Volker Reiffenrath, Hans Adolf Kurmeier, Eike Poetsch, Herbert Plach, Ulrich Finkenzeller, Ekkehard Bartmann, Joachim Krause, Bernhard Scheuble
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Patent number: 5516454Abstract: Supertwist liquid crystal displays having outstanding properties are obtained if the nematic liquid crystal mixture is based on components selected from group A comprising compounds of the formulae IIa to IIk: ##STR1##Type: GrantFiled: August 3, 1994Date of Patent: May 14, 1996Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Bernhard Scheuble, Takamasa Oyama, Georg Weber, Herbert Plach, Hans-Adolf Kurmeier, Volker Reiffenrath
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Patent number: 5324449Abstract: Substituted phenyl trifluoromethyl ethers of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.n --A.sup.2 --Z.sup.2 --A.sup.3 --OCF.sub.3 Iin which R.sup.1, A.sup.1, Z.sup.1, n, A.sup.2, Z.sup.2 and A.sup.3 have the meaning given in claim 1, are suitable as components of liquid-crystalline phases.Type: GrantFiled: February 22, 1993Date of Patent: June 28, 1994Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Hans-Adolf Kurmeier, Bernhard Scheuble, Eike Poetsch, Ulrich Finkenzeller
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Patent number: 5318721Abstract: The invention relates to the use of trifluorotoluene derivatives of the formula I ##STR1## in which R.sup.1 is alkyl having 1 to 12 carbon atoms in which, in addition, one or more non-neighboring CH.sub.2 groups may be replaced by --O--, --CO--, --O--CO--, --CO--O--, --O--CO--O--, --CH-halogen, --CH--CN-- and/or --CH.dbd.CH--,A.sup.1 and A.sup.2, in each case independently of one another, are 1,4-phenylene in which, in addition, one or more CH groups may be replaced by N, trans-1,4-cyclohexylene in which, in addition, one or two non-neighboring CH.sub.2 groups may be replaced by --O-- and/or --S--, or 1,4-bicyclo(2,2,2)octylene, each of which is unsubstituted or monosubstituted or polysubstituted by halogen, nitrile and/or CH.sub.3,Z.sup.1 and Z.sup.2, in each case independently of one another, are --CO--O--, --O--CO--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 -- or a single bond, andn is 0 or 1,as components of chiral tilted smectic phases.Type: GrantFiled: August 4, 1989Date of Patent: June 7, 1994Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Volker Reiffenrath, Joachim Krause, Thomas Geelhaar, Rudolf Eidenschink, Hans-Adolf Kurmeier, Eike Poetsch, Bernhard Scheuble, Georg Weber
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Patent number: 5209868Abstract: Disclosed are trifluoromethylcyclohexane derivatives of the formula I ##STR1## whereinR is an alkyl or alkenyl radical having up to 18 C atoms which is unsubstituted or substituted by CN or by at least one halogen, and in which one or more non-adjacent CH.sub.2 groups may be replaced by a radical selected from the group comprising --O--, --S--, --CO--, --O--CO--, --CO--O-- and --C.tbd.C--,A.sup.1 and A.sup.2 are each, independently of one another,a) a 1,4-phenylene radical, in which one or two CH groups may be replaced by N,b) a 1,4-cyclohexylene radical, in which one or two non-adjacent CH.sub.2 groups may be replaced by --O-- or --S--,c) a 1,4-cyclohexenylene, piperidine-1,4-diyl, 1,4-bicyclo[2,2,2]-octylene or naphthalene-2,6-diyl radical,it being possible for the radicals a) and b) to be monosubstituted or polysubstituted by halogen atoms or cyano and/or methyl groups, ##STR2## Z.sup.1 and Z.sup.2 are each, independently of one another, --CO--O--, --O--CH--, --CH.sub.2 CH.sub.2 --, --CH(CN)--CH.sub.Type: GrantFiled: June 15, 1990Date of Patent: May 11, 1993Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Volker Reiffenrath, Eike Poetsch, Hans-Adolf Kurmeier, Georg Weber, Reinhard Hittich, Hans-Michael Kompter, Herbert Plach
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Patent number: 5204017Abstract: Difluorobenzonitriles of the formula I ##STR1## in which Y is alkyl, alkenyl, alkoxy, oxaalkyl or alkenyloxy containing in each case 1 to 12 carbon atoms,one of the radicals A.sup.1 and A.sup.2 present in the molecule is ##STR2## where X is CH or N, and the other radical A.sup.1 or A.sup.2 is selected from the group comprising ##STR3## one of the radicals Z.sup.1 and Z.sup.2 is a single bond and the other radical Z.sup.1 or Z.sup.2 is --CH.sub.2 CH.sub.2 -- or a single bond, andm is 0 or 1, with the proviso that if m=1, Z.sup.1 =Z.sup.2 - single bond and one of the radicals A.sup.1 and A.sup.2 =2,5-pyrimidinediyl and the other radical A.sup.1 or A.sup.2 =1,4-phenylene, A.sup.1 is 2,5-pyrimidinediyl.Type: GrantFiled: November 19, 1990Date of Patent: April 20, 1993Assignee: Merck Patent GmbHInventors: Volker Reiffenrath, Hans-Adolf Kurmeier, Bernhard Scheuble
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Patent number: 5167859Abstract: 2,5-Disubstituted heterocycles of the formula I ##STR1## in which R.sup.1 and R.sup.2, each independently of one another, are alkyl, alkenyl or oxaalkyl having up to 12 C atoms,L.sup.1 and L.sup.2, each independently of one another are H or F,Y is --O--, --CO--O--, --O--CO-- or a single bond,m is 1 or 2,Z is H, F, OH or alkyl having up to 5 C atoms, andQ is --O--, --O--CO--, or if Z is fluorine or hydroxyl, is also be a single bondare suitable as components of ferroelectric mixtures.Type: GrantFiled: December 21, 1989Date of Patent: December 1, 1992Assignee: Merck Patent Gesellschaft Mit Beschraenkter HaftungInventors: Andreas Wachtler, Thomas Geelhaar, Hans-Adolf Kurmeier, Detlef Pauluth
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Patent number: 5068389Abstract: The invention relates to tertiary alcohols of the formula I ##STR1## wherein R.sup.1, A.sup.1, Z.sup.1, m, A.sup.2, Y, Q.sup.1, Q.sup.2, Q.sup.3 and Z.sup.2 have the meanings indicated in claim 1, and also to a process for the preparation of these compounds.Type: GrantFiled: May 3, 1990Date of Patent: November 26, 1991Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Andreas Wachtler, Rudolf Eidenschink, Joachim Krause, Hans-Adolf Kurmeier