Patents by Inventor Ulrich Finkenzeller
Ulrich Finkenzeller 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: 6716491Abstract: A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which comprises one or more compounds of the formula I where R1, A1, A2, Z1, Z2, L1, L2 and n are as defined herein, is suitable for use in, for example, MLC, TN and STN displays.Type: GrantFiled: May 8, 2001Date of Patent: April 6, 2004Assignee: Merck Patent GmbHInventors: Kazuaki Tarumi, Brigitte Schuler, Matthias Bremer, Ulrich Finkenzeller, Eike Poetsch, Heike Kniel
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Patent number: 6679764Abstract: The present invention relates to a novel supply system for chemicals which permits the preparation of solid-containing suspensions, which are required, inter alia, for polishing wafers or in semiconductor production, directly at the point of use.Type: GrantFiled: February 27, 2001Date of Patent: January 20, 2004Assignee: Merck Patent GmbHInventors: Ulrich Finkenzeller, Claus Dusemund, Thomas Schwortschik
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Publication number: 20020030180Abstract: A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which comprises one or more compounds of the formula I 1Type: ApplicationFiled: May 8, 2001Publication date: March 14, 2002Inventors: Kazuaki Tarumi, Brigitte Schuler, Matthias Bremer, Ulrich Finkenzeller, Eike Poetsch, Heike Kniel
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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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Publication number: 20010006882Abstract: The present invention relates to a novel supply system for chemicals which permits the preparation of solid-containing suspensions, which are required, inter alia, for polishing wafers or in semiconductor production, directly at the point of use.Type: ApplicationFiled: February 27, 2001Publication date: July 5, 2001Applicant: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Ulrich Finkenzeller, Claus Dusemund
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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: 5958290Abstract: The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.Type: GrantFiled: February 23, 1995Date of Patent: September 28, 1999Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: David Coates, Shirley Marden, Graham Smith, Ulrich Finkenzeller, Volker Reiffenrath, Reinhard Hittich, Stefan Wilhelm
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Patent number: 5811029Abstract: Benzene derivatives of the formula I ##STR1## in which n is 1 to 7, Q is --CO or --(CH.sub.2).sub.r -- where r is 1 to 5, s is 0, 1 or 2, t is 0 or 1, where s+t.gtoreq.1, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y, L and Z are each, independently of one another, H or F.Type: GrantFiled: February 13, 1995Date of Patent: September 22, 1998Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Andreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Ulrich Finkenzeller, Thomas Geelhaar, Volker Reiffenrath, Bernhard Rieger
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Patent number: 5725796Abstract: The invention relates to a liquid-crystal display based on a twisted nematic cell and havingtwo substrates provided with electrode layers and alignment layers thereon and, with a frame, forming a cell,a nematic liquid-crystal mixture having positive dielectric anisotropy present in the cell, anda twist angle of the liquid-crystal layer in the cell with a value of between 0.degree. and 600.degree. from alignment layer to alignment layer,whose liquid-crystal mixture is based on medium-polarity compounds of the SFM type which are selected so that the liquid-crystal mixture has a viscosity at 20.degree. C. of less than 30 mm.sup.2 s.sup.-1 and has a value ofK/.DELTA..di-elect cons..ltoreq.1.5for the quotient of the Frank constant K ##EQU1## and the dielectric anisotropy .DELTA..di-elect cons..DELTA..di-elect cons.=.di-elect cons..vertline.-.di-elect cons..sub..perp.when used in a TN cell (.nu.=.pi./2, d/p<<1)K/.DELTA..di-elect cons..ltoreq.1.5where .nu.Type: GrantFiled: June 5, 1995Date of Patent: March 10, 1998Assignee: Merck Patent Gesellschaft met beschrankter HaftungInventors: Ulrich Finkenzeller, Herbert Plach, Eike Poetsch, Volker Reiffenrath
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Patent number: 5705095Abstract: Compounds of the formula I ##STR1## in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, Z.sup.1, Z.sup.2, L.sup.1, L.sup.2, L.sup.3, m and n are as defined herein, are suitable as component of liquid-crystalline media.Type: GrantFiled: February 12, 1996Date of Patent: January 6, 1998Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Ekkehard Bartmann, Ulrich Finkenzeller
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Patent number: 5698134Abstract: The invention relates to an electrooptical systemwhich between 2 electrode layers contains a liquid crystal mixture and a further optically transparent polymer medium, in which one of the electrode layers is in the form of an active matrix having nonlinear addressing elements integrated with the image point, while the other electrode layer forms the counter electrode,whose liquid crystal molecules have irregular orientation in the switched-off state,in which one of the refractive indices of the liquid crystal mixture is substantially the same as the refractive index of the medium n.sub.m and/or in which the quotient from the weight of the liquid crystal mixture and the weight of the optically transparent medium is 1.Type: GrantFiled: July 27, 1994Date of Patent: December 16, 1997Assignees: Merck KGaA, Sharp CorporationInventors: Raymond Edward Jubb, Ulrich Finkenzeller, Stefan Wilhelm, Shohei Naemura, Toshiyuki Hirai, Shuichi Kouzaki
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Patent number: 5643495Abstract: 1,2,2,2-Tetrafluoroethyl ethers of the formula IR--(A.sup.1 --Z.sup.1).sub.m --A.sup.2 --Z.sup.2 A.sup.3 --O--CHF--CF.sub.3(I)are suitable as components of liquid-crystalline media whereinR is H, a substituted or unsubstituted alkyl or alkenyl radical having 1 to 15 carbon atoms,A.sup.1 and A.sup.2 are each, independently of one another, a(a) trans-1,4-cyclohexylene radicals and derivatives thereof in which, in addition, one or more non-adjacent CH.sub.2 groups is optionally replaced by --O-- and/or --S--,(b) 1,4-phenylene radicals and derivatives thereof in which, in addition, one or two CH groups is optionally replaced by N, or(c) radical from the group consisting of 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)octylene, piperidine-1,4-diyl, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl,wherein radicals (a) and (b) are optionally substituted by one or two fluorine atoms,Z.sup.1 and Z.sup.2 are each, independently of one another, --CO--O--, --O--CO--, --CH.sub.Type: GrantFiled: September 12, 1995Date of Patent: July 1, 1997Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Ekkehard Bartmann, Ulrich Finkenzeller
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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: 5536442Abstract: The invention relates to liquid crystal compounds having a terminal structure in accordance with formula 1, 2, 3 or 4:--A.sup.3 --OCF.sub.3 1--A.sup.2 --Q--CHF.sub.2 2--3,5-difluoro-1,4-phenylene-X.sup.1 3--3-fluoro-1,4-phenylene-X.sup.2 4wherein A.sup.2, A.sup.3, X.sup.1 and X.sup.2 and are defined herein. The invention further relates liquid crystal phases containing the above components as well as electrooptical displays containing same.Type: GrantFiled: July 6, 1992Date of Patent: July 16, 1996Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Volker Reiffenrath, Hans A. Kurmeier, Eike Poetsch, Herbert Plach, Ulrich Finkenzeller, Ekkehard Bartmann, Joachim Krause, Bernhard Scheuble, Dieter Dorsch, Georg Weber
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Patent number: 5496499Abstract: Biphenylylethanes of the formula I ##STR1## in which one of the radicals R.sup.1 and R.sup.2 is X and the other radical R.sup.1 or R.sup.2 is R--Y-- whereX is H, halogen, --CF.sub.3, --OCHF.sub.2, --OCF.sub.3, --CN, --NCS or --NO.sub.2,R is alkyl, fluoroalkyl, alkenyl or oxaalkyl andY is O, S, --CO--O--, --O--CO--, --O--CO--O--, a single bond or--in the case where m=1--alternatively trans-1,4-cyclohexylene or ##STR2## m is 1 or 2, Ph is in each case identical or different radicals selected from the group comprising 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene and 3,5-difluoro-1,4-phenylene,L.sup.3 and L.sup.4 are each H, or one of these radicals is alternatively F,L.sup.1, L.sup.2and L.sup.5 are each H or F, with the proviso that in the case where X=CN or R.sup.1 =--NCS, Y is trans-1,4-cyclohexylene or ##STR3## and/or m=2 and/or one of the radicals L.sup.1, L.sup.2 and L.sup.Type: GrantFiled: January 12, 1994Date of Patent: March 5, 1996Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Eike Poetsch, Volker Meyer, Klaus P. Stahl, Volker Reiffenrath, Ulrich Finkenzeller, Ekkehard Bartmann, Reinhard Hittich, David Coates, Simon Greenfield, Graham Smith, Hans A. Kurmeier, Dieter Dorsch
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Patent number: 5487845Abstract: Fluorobenzene derivatives of the formula I, ##STR1## R, A1, A2, S1, 22, L, m, Y, Q are as defined herein.Type: GrantFiled: April 12, 1994Date of Patent: January 30, 1996Assignee: Merck Patent Gesellschaft Mit Beschrankter HaftungInventors: Volker Reiffenrath, Hans A. Kurmeier, Eike Poetsch, Herbert Plach, Ulrich Finkenzeller, Ekkehard Bartmann, Joachim Krause, Bernhard Scheuble
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Patent number: 5480581Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which X is fluorine, chlorine, CF.sub.3, OCF.sub.3 or OCHF.sub.2, ring A is trans-1,4-cyclohexylene or 1,4-phenylene, and R is alkyl, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms.Type: GrantFiled: April 7, 1994Date of Patent: January 2, 1996Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Herbert Plach, Ulrich Finkenzeller, Volker Reiffenrath, Eike Poetsch, Bernhard Rieger, Hiroshi Numata
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Patent number: 5456860Abstract: The invention relates to a matrix liquid-crystal display (MLCD) containing a liquid-crystal mixture based on dielectrically positive liquid-crystal compounds which have a polar end group with a lipophilicity parameter, .pi., value of .gtoreq.0.1.Type: GrantFiled: December 14, 1992Date of Patent: October 10, 1995Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Eike Poetsch, Ulrich Finkenzeller, Reinhard Hittich
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Patent number: 5445764Abstract: The invention relates to methylenecyclobutane benzene derivatives of the formula I ##STR1## in which R.sup.1, A.sup.1, Z.sup.1, L.sup.1, L.sup.2, m, V, W, Y and n have the meaning given in claim 1, and to their use as components of liquid-crystalline media for electrooptical displays.Type: GrantFiled: July 20, 1994Date of Patent: August 29, 1995Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Eike Poetsch, Werner Binder, Volker Meyer, Ulrich Finkenzeller, Bernhard Rieger
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Patent number: 5397505Abstract: The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it contains one or more compounds of the general formula I ##STR1## in which r is o or 1, Q.sup.1 is --CH.sub.2 CH.sub.2 -- or a single bond, A is 1,4-phenylene or trans-1,4-cyclohexylene, L is H or F, R is alkyl, alkoxy, oxaalkyl, fluoroalkyl or alkenyl, in each case having up to 7 carbon atoms and X is F, CF.sub.3, or OCF.sub.2 H.Type: GrantFiled: January 18, 1994Date of Patent: March 14, 1995Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Bernhard Rieger, Hiroki Yoshitake, Thomas Jacob, Herbert Plach, Ulrich Finkenzeller, Hans A. Kurmeier