Patents by Inventor Bernhard Scheuble
Bernhard Scheuble 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: 5064566Abstract: Compounds of the formula IR.sup.1 -A.sup.1 -A.sup.2 -R.sup.2 IwhereinR.sup.1 and R.sup.2 are each alkyl with 1-15 C atoms, and wherein one or two non-adjacent CH.sub.2 groups can also be replaced by --O--, --S--, --CO--, --O--CO--, --CO--O--, --CO--S--, --S--CO--, --CHHalogen--, --CHCN-- and/or --CH.dbd.CH--,A.sup.1 is 1,4-phenylene, trans-1,4-cyclohexylene or a single bond andA.sup.2 is ##STR1## in which Z is --O--CO--, --CO--O--, --S--CO--, --CO--S--, CH.sub.2 O--, --OCH.sub.2 -- or --CH.sub.2 CH.sub.2 --, with the proviso that, if A.sup.1 is a single bond, A.sup.2 is ##STR2## are suitable as components of chirally tilted smectic liquid crystal phases.Type: GrantFiled: October 20, 1989Date of Patent: November 12, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Reinhard Hopf, Bernhard Scheuble, Reinhard Hittich, Joachim Krause, Volker Reiffenrath, Eike Poetsch, Thomas Geelhaar, Rudolf Eidenschink
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Patent number: 5055221Abstract: Compounds of the formula I,R.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --[Z.sup.2 --A.sup.3 ].sub.m --R.sup.2 Iin which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and m have the meaning specified in patent claim 1, are suitable as components of smectic liquid-crystalline phases.Type: GrantFiled: June 5, 1989Date of Patent: October 8, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Scheuble, Klaus Bofinger, Reinhard Hopf, Axel Pausch, Rudolf Eidenschink, Joachim Krause, Andreas Wachtler
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Patent number: 5043093Abstract: Pyrimidines of the formula I ##STR1## in which R is an alkyl gorup of 1-15 C atoms in which in addition one or two nonadjacent Ch.sub.2 groups can be replaced by --0--, --CO--, --O--CO--, --CO--O--, --CHY-- and/or --CH.dbd.CH--, or is H, F, Cl or CN,X is --O--CH.sub.2 --R.sup.1, --S--R.sup.2, --NCS or --COO--A--R.sup.3,Y is halogen, CN or OH,R.sup.1 is an alkyl group of 1-15 C atoms, in which one or more nonadjacent CH.sub.2 groups are replaced by --O--, --CO--, --0--CO--, --CO--O--, --CHY-- and/or by --CH.dbd.CH--,R.sup.2 is an alkyl group of 1-15 C atoms, in which in addition one or two nonadjacent CH.sub.2 groups can be replaced by --O--, --CO--, --O--CO--, --CO--O--, --CHY-- and/or --CH.dbd.CH--,A is a trans-1,4-cyclohexylene group which is unsubstituted or monosubstituted or disubstituted by F and/or Cl atoms and/or CH.sub.3 groups and/or CN groups, or is a single bond, andR.sup.3 is an alkyl group of 1-15 C atoms, in which in addition ne or two nonadjacent and, if A is a single bond, nonterminal CH.sub.Type: GrantFiled: September 12, 1986Date of Patent: August 27, 1991Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Joachim Krause, Rudolf Eidenschink, Reinhard Hittich, Bernhard Scheuble
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Patent number: 5030383Abstract: The invention relates to a liquid crystal display element with a particularly low temperature-dependence of the threshold voltage.Type: GrantFiled: October 30, 1987Date of Patent: July 9, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Scheuble, Reinhard Hittich, Rudolf Eidenschink
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Patent number: 5002694Abstract: Nitrogen-containing heterocyclic compounds of the formula II ##STR1## wherein R.sup.1 and R.sup.2 in each case denote an alkyl group having 1 to 15 C atoms, wherein one or more CH.sub.2 groups may also be replaced by a grouping selected from the group comprising --O--, --S--, --CO--, --O--CO--, --O--COO--, --CO--O--, --CH.dbd.CH--, --CH--halogen and --CHCN--, or else by a combination of two suitable groupings, two heteroatoms not being directly linked to each other,m denotes 0 or 1,Ar denotes 1,4-phenylene, 4,4'-biphenylyl or 2,6-naphthylene, wherein one or more CH groups are in each case replaced by N,Z denotes --C--O--, --O--CO--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 --, --CH.sub.2 CHCN--, --CHCNCH.sub.2 --, --CH.dbd.CH or a single bond, andA denotes unsubstituted 1,4-cyclonexylene or 11,4-cyclohexylene substituted in position 1 or position 4 by CN,with the proviso that if A=unsubstituted 1,4-cyclonexylene, Z denotes --CHCNCH.sub.2 -- or --CH.sub.2 CHCN-- and/or at least one CH.sub.Type: GrantFiled: May 13, 1987Date of Patent: March 26, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Andreas Wachtler, Rudolf Eidenschink, Joachim Krause, Bernhard Scheuble
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Patent number: 4986931Abstract: Cyclohexane derivatives of formula IR.sup.1 --(A.sup.1).sub.m --Z.sup.1 --A--Z.sup.2 --(A.sup.2).sub.n --R.sup.2 (I)wherein R.sup.1 and R.sup.2 are each H, an alkyl group which has 1-10 C atoms and in which one or two CH.sub.2 groups can also be replaced by 0 atoms, F, Cl, Br, CN or --O--COR, A.sup.1 and A.sup.2 are each 1,4-phenylene, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, piperidine-1,4-diyl, 1,4-bicyclo(2,2,2)-octylene or pyrimidine-2,5-diyl groups which are unsubstituted or substituted by 1-4 F atoms, A is a 1,4-cyclohexylene group which is substituted in the 1-position and/or 4-position by alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy, each of which has 1-5 C atoms, F, Cl, Br and/or CN and which can also carry 1 or 2 further F, Cl or Br atoms and/or CN groups, Z.sup.1 and Z.sup.2 are each --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.Type: GrantFiled: May 26, 1987Date of Patent: January 22, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Rudolf Eidenschink, Gunther Haas, Ludwig Pohl, Michael Romer, Bernhard Scheuble, Georg Weber
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Patent number: 4985583Abstract: New cyclohexane derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --R.sup.2 IwhereinR.sup.1 and R.sup.2 are each H, an unsubstituted or substituted alkyl group with 1-15 C atoms, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by at least one grouping from the group comprising --O--, --CO--, --O--CO--, --CO--O--, --C.tbd.C--, --CH.dbd.CH--, --S--, --SO-- and --SO.sub.2 --, F, Cl, Br, CN or R.sup.3 --(A.sup.3).sub.p --Z.sup.2 --,A.sup.1 is --A--, --A.sup.4 --Z.sup.3 --A-- or --A--Z.sup.3 --A.sup.4 --,A is a 1,4-cyclohexylene group which is substituted in the 1- and/or 4-position by unsubstituted or substituted alkyl or fluorinated alkyl with in each case 1-5 C atoms, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by one grouping from the group comprising --O--, --CO--, --O--CO--, --CO--O--, --C.tbd.C--, --CH.dbd.CH--, --S--, --SO-- and --SO.sub.Type: GrantFiled: April 7, 1987Date of Patent: January 15, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Rudolf Eidenschink, Joachim Krause, Andreas Wachtler, Reinhard Hittich, Bernhard Scheuble, Georg Weber, Hans-Adolf Kurmeier
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Patent number: 4970022Abstract: Mustard oils of the formula IR--(A.sup.1 --Z.sup.1).sub.n --A.sup.2 --Z.sup.2 --A.sup.3 --NCSin which A.sup.1, A.sup.2, A.sup.3, R, Z.sup.1, Z.sup.2 and n have the meaning specified in claim 1 can be used as components of liquid-crystalline phases.Type: GrantFiled: August 19, 1987Date of Patent: November 13, 1990Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Scheuble, Rudolf Eidenschink, Joachim Krause, Eike Poetsch, Andreas Wachtler
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Patent number: 4935160Abstract: A liquid-crystal guest-host system has at least two pleochroic dyestuffs. At least one of the dyestuffs has an absorption maximum above 665 nm, and the dyestuffs and their concentrations are selected such that an electro-optical display element containing the liquid-crystal guest-host system shows a color separation .DELTA.E, measured by the CIE (1964) method, to the point of achromatism of less than 5 units. The liquid-crystal guest-host system is useful for electro-optical display elements.Type: GrantFiled: September 19, 1988Date of Patent: June 19, 1990Assignee: Merck Patent Gessellschaft Mit Beschrankter HaftungInventors: Bernhard Scheuble, Georg Weber, Ludwig Pohl
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Patent number: 4886344Abstract: A suitable choice of the liquid crystal parameters K.sub.3 /K.sub.1 and .DELTA.E/E.sub.1 makes it possible in electrooptical display elements to obtain both a minimum dependence on the angle of observation and, simultaneously, a steep electro-optical characteristic when operated in the first transmission minimum.Type: GrantFiled: August 19, 1988Date of Patent: December 12, 1989Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Scheuble, Gunter Baur, Waltraud Fehrenbach
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Patent number: 4886620Abstract: The invention relates to the use of compounds of the formula IR.sup.1 --Q.sup.1 --A--(A.sup.2).sub.q --R.sup.2 Iwherein ##STR1## and R.sup.1, R.sup.2, Q.sup.1, Q.sup.2 and q have the meaning specified in claim 1, as components of smectic liquid-crystalline phases, and also smectic liquid-crystalline phases, in particular chiral tilted smectic phases containing compounds of formula I.Type: GrantFiled: May 13, 1987Date of Patent: December 12, 1989Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Reinhard Hopf, Bernhard Scheuble, Andreas Wachtler, Reinhard Hittich, Rudolf Eidenschink, Thomas Geelhaar, Joachim Krause, Volker Reiffenrath
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Patent number: 4882082Abstract: Nitrogen-containing heterocyclic compounds of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 [Z.sup.2 --A.sup.3 ].sub.n --R.sup.2whereinR.sup.1 and R.sup.2 in each case independently of one another are an alkyl group with 1-15 C atoms, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by 0 atoms and/or --CO-- groups and/or --O--CO-- groups and/or --CO--O-- groups, and one of the radicals R.sup.1 and R.sup.2 is also H, F, Cl, Br or CN,is a 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.sub.2 groups to be replaced by 0 atoms, a 1,4-bicyclo(2,2,2)-octylene group or a 1,3-dithiane-2,5-diyl group,Z.sup.1 and Z.sup.2 in each case independently of one another are --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O-- or a single bond,A.sup.2 and A.sup.3 in each case independently of one another are a 1,4-phenylene group, pyrimidine-2,5-diyl group, 1,4-cyclohexylene group, it also being possible for one or two non-adjacent CH.Type: GrantFiled: March 23, 1988Date of Patent: November 21, 1989Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Rudolf Eidenschink, Joachim Krause, Reinhard Hittich, Eike Poetsch, Bernhard Scheuble, Georg Weber, Ludwig Pohl
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Patent number: 4877547Abstract: The invention relates to a new liquid crystal display element with static or multiplex control with a low multiplex ratio and an operating voltage below 3.3 volts, containing a liquid crystal dielectric, wherein the operating temperature range extends from -30.degree. C. to +80.degree. C. and the viscosity of the dielectric at 20.degree. C. is less than 40 mPa.s.Type: GrantFiled: October 23, 1987Date of Patent: October 31, 1989Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Georg Weber, Bernhard Scheuble, Joachim Krause
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Patent number: 4871469Abstract: 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=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 poly-substituted 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: January 4, 1988Date of Patent: October 3, 1989Assignee: Bescrankter HaftungInventors: Volker Reiffenrath, Joachim Krause, Thomas Geelhaar, Rudolf Eidenschink, Hans-Adolf Kurmeier, Eike Poetsch, Bernhard Scheuble, Georg Weber
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Patent number: 4867904Abstract: Bicyclooctane derivatives of the Formula I ##STR1## wherein R.sup.1, R.sup.2, A.sup.1, A.sup.2 and Z have the meanings indicated in claim 1, are suitable for use as components of liquid-crystal phases for field effect and/or bistability effect displays.Type: GrantFiled: April 23, 1987Date of Patent: September 19, 1989Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Joachim Krause, Volker Reiffenrath, Bernhard Scheuble, Georg Weber
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Patent number: 4853149Abstract: Heterocyclic liquid crystal compounds containing the structural element ##STR1## wherein M is H, CN,, NCS, halogen or an alkyl group with 1-5 C atoms,X is CR.sup.4 or N,Y is CHR.sup.4, O, S or NR.sup.5,R.sup.4 is H, alkyl with 1-15 C atoms, halogen or cyano andR.sup.5 is H or alkyl with 1-15 C atoms,with the proviso that in the case where Y=CHR.sup.4, X is N, are suitable as components of liquid crystal phases.Type: GrantFiled: October 26, 1987Date of Patent: August 1, 1989Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Joachim Krause, Andreas Wachtler, Bernhard Scheuble, Georg Weber
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Patent number: 4846998Abstract: Cyclohexane derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --R.sup.2 Iin whichR.sup.1 and R.sup.2 are each an alkyl group having 1-10 C atoms, in which one or two non-adjacent CH.sub.2 groups can also be replaced by O atoms and/or --CO-- groups and/or --CO--O-- groups and/or --CH.dbd.CH-- groups, one of the radicals R.sup.1 and R.sup.2 also being H, F, Cl, Br, CN or R.sup.3 --A.sup.3 --Z.sup.2 --,A.sup.1 is --A--, A.sup.4 --A-- or --A--A.sup.4 --,A is a trans-1,4-cyclohexylene group which can be substituted in the 2-, 3-, 5- and/or 6-position one or more times by F and/or Cl and/or Br and/or CN and/or an alkyl group or a fluorinated alkyl group which each have 1-10 C atoms and in which one or two non-adjacent CH.sub.2 groups can also be replaced by 0 atoms and/or --CO-- groups and/or --CO--O-- groups, and which may also be substituted in the 1- and/or 4-position,A.sup.2, A.sup.3 and A.sup.Type: GrantFiled: November 21, 1986Date of Patent: July 11, 1989Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Ludwig Pohl, Bernhard Scheuble, Reinhard Hittich, Rudolf Eidenschink, Hans A. Kurmeier, Andreas Wachtler
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Patent number: 4834904Abstract: Optically active nitrogen-containing heterocycles of the formula I according to claim 1 are suitable as components for ferroelectric liquid crystalline materials.Type: GrantFiled: December 24, 1986Date of Patent: May 30, 1989Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Joachim Krause, Rudolf Eidenschink, Klaus Bofinger, Bernhard Scheuble, Thomas Geelhaar
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Patent number: 4820839Abstract: Nitrogen-containing heterocyclic esters of the formula I,R.sup.1 -A.sup.1 -Z.sup.1 -A.sup.2 -[Z.sup.2 -A.sup.3 ].sub.m -R.sup.2 Iin which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and m have the meaning specified in patent claim 1, are suitable as components of smectic liquid-crystalline phases.Type: GrantFiled: January 23, 1987Date of Patent: April 11, 1989Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Joachim Krause, Andreas Wachtler, Volker Reiffenrath, Bernhard Scheuble, Reinhard Hittich
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Patent number: 4818428Abstract: The invention relates to liquid crystal phases (LC phases) having a particularly low threshold voltage, a particularly low ratio K.sub.3 /K.sub.1 of the elastic constants for bending (K.sub.3) and spreading (K.sub.1) and broad nematic phase ranges, these phases containing at the same time at least one highly polar component of reduced degree of association and, to reduce the quotient K.sub.3 /K.sub.1 of the elastic constants for bending (K.sub.3) and spreading (K.sub.1) of the phases to a value.ltoreq.1.1, at least one apolar liquid crystal component.Type: GrantFiled: September 12, 1986Date of Patent: April 4, 1989Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Scheuble, Georg Weber, Joachim Krause