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| Number | Title | Issue Date |
| 7351452 | Liquid crystalline compounds containing a biphenyl core A compound of formula (I) or a dimer thereof; where R1 and R2 are independently selected from optionally substituted alkyl, optionally substitituted alkenyl, optionally substit... | 04/01/2008 |
| 7268260 | Fluorine-containing bisphenols, their preparation, their precursors and intermediates, and use of the fluorine-containing bisphenols This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I) wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR2, C1 | 09/11/2007 |
| 7112704 | Fluorine-containing bisphenols, their preparation, their precursors and intermediates, and use of the fluorine-containing bisphenols This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I) wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR2, C1 | 09/26/2006 |
| 6949579 | Aminoindazole derivatives and intermediates, preparation thereof, and pharmaceutical compositions thereof The present invention relates to the novel indazole derivatives of general formula (I): in which: R is either O, S or NH; R3 is an alkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, aryl, heterocycle, cycloalkyl, alk... | 09/27/2005 |
| 6936739 | Fluorine-containing bisphenols, their preparation, their precursors and intermediates, and use of the fluorine-containing bisphenols This invention relates to 1,2-di(4-hydroxyaryl)tetrafluoroethanes of the general formula (I) wherein R are each, independently of one another, hydrogen, F, Cl, Br, I, CN, COOR2, C1-C | 08/30/2005 |
| 6864397 | Difluoromethyl ether derivative and process for producing the same The present invention provides a process for producing a difluoromethyl ether derivative simple and efficient process for producing the difluoromethyl ether derivative represented by Formula (1d′) or a difluoromethyl ether derivative represented by Formula (1c′)... | 03/08/2005 |
| 6844462 | Biphenydiols The invention relates to the biphenyldiols of the formula (V) The corresponding racemic and enantiomerically pure triflate compounds thereof, where R1 and R2 are H, R3 is chlorine, and R | 01/18/2005 |
| 6827876 | Difluoromethyl ether derivative and process for producing the same A liquid crystalline compound represented by Formula (1c′): wherein R1 and R2, rings A1, A2, A3, A4 and A5, Z1, Z2 | 12/07/2004 |
| 6770463 | Process for the preparation of chiral isofluoroenes There is provided a process for the preparation of a chiral insecticidal and acaricidal compound of formula I. Also provided are intermediate compounds useful in the process of the present invention. ... | 08/03/2004 |
| 6605747 | Difluoromethyl ether derivative and process for producing the same The present invention provides a difluoromethyl ether derivative which shows various suitable physical properties as a liquid crystal compound, a liquid crystal composition comprising the compound and a liquid crystal display element containing the compos... | 08/12/2003 |
| 6576303 | Liquid crystal compounds exhibiting negative anisotropy of permittivity Novel liquid crystal compound having a negative and absolutely large value of dielectric anisotropy, being excellent in compatibility with other liquid crystalline compounds at a low temperature and being stable chemically and physically, as well as a liq... | 06/10/2003 |
| 6534135 | Process of preparing discotic liquid crystalline compounds The invention relates to a process of preparing a discotic liquid crystalline compound by intramolecular oxidative cyclisation of a diaryl compound in an organic solvent in the presence of a strong acid, characterized in that an oxidative agent comprising... | 03/18/2003 |
| 6342642 | 1,4-diaryl-2-fluoro-1-buten-3-ol compounds and their use in the preparation of 1,4-diaryl-2-fluoro-1,3-butadiene and 1,4-diaryl-2-fluoro-2-butene compounds The present invention provides novel 1,4-diaryl-2-fluoro-1-buten-3-ol compounds of the structural formula I ##STR1## a method for the preparation of those formula I compounds, and the use of those formula I compounds in the preparation of 1,4-diaryl-... | 01/29/2002 |
| 6329555 | Preparation of substituted butenes Described is a process for preparing substituted butenes of the formula I and/or II, ##STR1## where the radical R is unsubstituted or mono- or di-C1 -C10 -alkoxy-substituted or mono- or dihydroxy-substituted C2 -C20 | 12/11/2001 |
| 6210603 | Fluorine-substituted benzene derivative, liquid-crystal composition, and liquid-crystal display element Liquid crystalline compounds are provided which have an extremely high voltage holding ratio, altered only slightly by change of temperature, and which have a low threshold voltage and a high Ɗn. Also provided are liquid crystal compositions containing t... | 04/03/2001 |
| 6171664 | Tolan derivatives, and liquid-crystalline medium The invention relates to tolan derivatives of the formula I ##STR1## in which R1, R2, A, Z, L1, L2, L3, L4, L5, L6, Q, m and n are as defined herein.... | 01/09/2001 |
| 6139771 | Mesogenic materials with anomalous birefringence dispersion and high second order susceptibility (X.sup.(2)). This invention provides LC compositions useful as birefringent materials in electrooptic devices which exhibit zero or low negatively sloped birefringence dispersion (e.g., exhibiting positive birefringence dispersion significantly lower than that of curr... | 10/31/2000 |
| 6056893 | Dopants A dopant compound of the formula I R1 -(A1 -Z1)n -A2 -W I in which ##STR1## and R1, A1, A2, Z1 n, X and Ra are as defined in claim 1... | 05/02/2000 |
| 6030546 | Trans-olefin compounds, method for production thereof, liquid crystal composition containing the same as active ingredient, and liquid crystal element using said composition The present invention relates to trans-olefin compounds represented by the general formula (1) useful as an ingredient of liquid crystal composition, trans-olefin compounds useful as intermediate of pesticides, medical drugs, liquid crystal materials and ... | 02/29/2000 |
| 6015508 | Liquid crystalline compounds containing hydrocarbon groups, liquid crystalline compositions, and liquid crystal display elements Disclosed are (A) a liquid crystalline compound of the general formula: ##STR1## wherein X1 stands for a hydrogen atom, cyano group, a halogen atom, or an alkyl group with 1-20 carbon atoms, and one or more methylene groups in the alkyl gr... | 01/18/2000 |
| 5998673 | 1, 4-diaryl-2-fluoro-2-butene insecticidal and acaricidal agents Pesticidal 1,4-diaryl-2-fluoro-2-butene compounds having the structural formula I ##STR1## and compositions and methods comprising those compounds for the control of insect and acarid pests.... | 12/07/1999 |
| 5928562 | Process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (... | 07/27/1999 |
| 5910605 | Process for the preparation of 3-hydroxy-2-methylbenzoic acid and 3-acetoxy-2-methylbenzoic The invention relates to a process for the preparation of 3-hydroxy-2-methylbenzoic acid and 3-acetoxy-2-methylbenzoic acid, which comprises reacting 3-chloro-2-methylphenol (3) with benzyl chloride to give 2-benzyloxy-6-chlorotoluene (4) subjecting this ... | 06/08/1999 |
| 5888423 | Fluorobenzyl ether derivatives Flourobenzyl ether derivatives of the formula ##STR1## and liquid crystalline mixtures which contain such compounds are prepared and employed in electro-optical display devices.... | 03/30/1999 |
| 5872301 | Bifunctional precursors for the preparation of liquid crystals Bifunctional compounds of the formula (I), ##STR1## in which: ##STR2## are naphthalene-2,6-diyl or ##STR3## is naphthalene-2,6-diyl or ##STR4## U, X, Y and Z are --CH.dbd., --CF.dbd. and --N.dbd., with the proviso that --CF.d... | 02/16/1999 |
| 5855812 | Compounds and process for controlling cone tilt angle in mixtures of smectic liquid crystal compounds A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (... | 01/05/1999 |
| 5851424 | Photo cross-linkable liquid crystalline 1,4-dioxane-2,3 diyl derivatives The present invention is concerned with photo cross-linkable liquid crystalline compounds of the general formula ##STR1## wherein A1 and A2 each represent a cross-linkable, mesogenic residue, liquid crystalline mixtures which co... | 12/22/1998 |
| 5849959 | Derivatives of 2, 3, 6-trifluorophenols and a process for their preparation The present invention relates to compounds of the formula (1) ##STR1## where R is H, a straight-chain or branched alkyl radical with 1 to 6 carbons, a fluorinated straight-chain or branched alkyl radical with 1 to 6 carbons, a benzyl radical, or a be... | 12/15/1998 |
| 5840209 | Optically active compound, liquid crystal compositions containing the optically active compound, and liquid crystal display device I! An optically active compound of the formula (1), ##STR1## wherein R1 is a linear alkyl group, each of X1 and X2 is a hydrogen atom or one of X1 and X2 is a hydrogen atom and the other is a f... | 11/24/1998 |
| 5800734 | 1-fluorocyclohexene-difluorophenyl derivatives A compound of the formula ##STR1## wherein R is C1 -C7 alkyl or C2 -C12 alkenyl; rings A and B each independently are 1,4-phenylene, trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl; Z1 is a sing... | 09/01/1998 |
| 5772914 | Chiral dopes Chiral benzene derivatives of formula I ##STR1## in which R1*, R2*, X1, X2, A1, A2, Z1, Z2, L1, L2, L3, m, n and k are as defined in c... | 06/30/1998 |
| 5770108 | Pyrimidine compound and liquid crystal composition and liquid crystal element using the same A novel pyrimidine compound represented by the following Formulas (1) and (2), a liquid crystal composition containing said compound and a liquid crystal element having excellent characteristics such as high speed response, orientation and high contrast r... | 06/23/1998 |
| 5759443 | Cyclopentyl derivatives Objects of this invention are cyclopentyl compounds of the general formula ##STR1## wherein k signifies a whole number of 4 to 18; n signifies 0 or 1; Y1, Y2 signify a single bond, --O--, --COO-- or --OOC--; rings A, B, C each independent... | 06/02/1998 |
| 5755994 | Ester derivative, liquid crystal composition and liquid crystal display element A novel liquid crystalline compound having a large dielectric anisotropy value, a small change in the threshold voltage depending upon temperatures, and an improved solubility in other liquid crystal materials at low temperatures, and a liquid crystal com... | 05/26/1998 |
| 5750549 | Cycloalkyl tachykinin receptor antagonists The present invention is directed to certain novel compounds represented by structural formula I: ##STR1## or a pharmaceutically acceptable salt thereof, wherein R3, R6, R7, R8, R11, R12 | 05/12/1998 |
| 5741438 | Optically active biphenyl derivative, process for preparation thereof, liquid crystal composition containing the same as an effective component, and liquid crystal element using the same Optically active biphenyl derivatives including optically active biphenyl carboxylic acid derivative, hydroxybiphenyl derivative, alkoxybiphenylalkanol derivative and alkoxybiphenylalkanol derivative have the following structural formula: ##STR1## ... | 04/21/1998 |
| 5707544 | Chromophore-containing photo cross-linkable liquid crystals The present invention is concerned with chromophore-containing photo cross-linkable liquid crystalline compounds having the formula ##STR1## wherein A1 and A2 each represent a cross-linkable, mesogenic group; and A3 r... | 01/13/1998 |
| 5705095 | Partially fluorinated benzene derivatives Compounds of the formula I ##STR1## in which R1, R2, A1, A2, Z1, Z2, L1, L2, L3, m and n are as defined herein, are suitable as component of liquid-cry... | 01/06/1998 |
| 5700393 | Liquid crystalline compounds The present invention is concerned with photo cross-linkable liquid crystalline compounds of the general formula ##STR1## wherein A1 and A2 each are a cross-linkable mesogenic residue; and A3 is (R,R)- or (S,S)-trans-... | 12/23/1997 |
| 5658951 | Diphenylcyclopropyl analogs Diphenylcyclopropyl analogs in which one or more of the phenyl rings includes alkoxy substituents including a dialkylaminoalkoxy group, an unsubstituted piperazine alkoxy group, a substituted piperazine alkoxy group, an unsubstituted piperidine alkoxy gro... | 08/19/1997 |
