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| Number | Title | Issue Date |
| 7374700 | Hexenediyne derivative Provided is a liquid crystalline compound which has a large value of refractive index anisotropy, exhibits a liquid crystal phase in a wide temperature range, and is stable under use conditions. It is a liquid crystalline compound represented by the following... | 05/20/2008 |
| 7358405 | Dehalogenation process A process for obtaining vinyl compounds by dehalogenation of halofluorinated compounds with aromatic substituents, having formula: T-Ar—(O)y—CFX′—CF2X″ (I) wherein: X′=F, C... | 04/15/2008 |
| 7335803 | Methods and compositions for modulating alpha adrenergic receptor activity Methods and compositions for the treatment of pain and intraocular pressure. Particularly disclosed are new compositions for the treatment of chronic pain, glaucoma and methods for their use. ... | 02/26/2008 |
| 7318950 | Chiral compounds II The invention relates to chiral compounds of formula (I) R1—X1-(A1-Z1)m-G-(Z2-A2)n-X2—R2, wherein R1, R2, X1, X2 | 01/15/2008 |
| 7314580 | Compound, liquid-crystal composition and optical material Disclosed is a liquid-crystal composition capable of providing a functional film that exhibits useful optical properties. The composition comprises a compound of the following formula (1) that exhibits a smectic liquid-crystal phase. R1—(Ar | 01/01/2008 |
| 7312350 | Process for preparing arylalkynes The invention relates to a process for preparing arylvinyl halides and sulphonates and arylalkynes by reacting haloaromatics or aryl sulphonates with vinyl halides or sulphonates in the presence of a palladium catalyst and a base and, if appropriate, subsequent elim... | 12/25/2007 |
| 7220784 | Substituted stilbenes and their reactions The present invention relates to stilbene and quinone compounds related to combretastatin A-4 and their use as anticancer compounds and prodrugs. The compounds include those with an alkyl group on the double bond of cis or trans-stilbenes, compounds with one or more... | 05/22/2007 |
| 7182885 | Fluorinated indenes and 1,7-dihydroindacenes of negative dielectric anisotropy Fluorinated indenes and 1,7-dihydroindacenes of the general formulae (I) and (II) of negative dielectric anisotropy (Δε | 02/27/2007 |
| 7157124 | Polymerizable compounds and their polymers A compound represented by formula (1) or (2) and a polymer obtained by polymerizing the compound are provided: wherein Ra is one of the groups represented by Formulas (3-1) to (3-5); Rb is h... | 01/02/2007 |
| 7070838 | Liquid crystalline compound, liquid crystal composition and their polymers The present invention provides a compound represented by formula (1) defined in the specification and a liquid crystal composition comprising the compound. The invention further provides a polymer obtained by polymerization of compound or composition above, and furt... | 07/04/2006 |
| 6875895 | Bis (diphenylvinyl) arene compound Provided is a bis(diphenylvinyl)arene compound having a reactive functional group on phenyl group, represented by below formula (1), wherein, Ar is an arylene group and has one or more substituents; R1-R | 04/05/2005 |
| 6838017 | Polar tolane liquid crystals New tolane and bis-tolane compounds: in which X is F (fluoro), CN (cyano), OCF3 (trifluoromethoxy), or NCS (isothiocyanate) at least one of the pairs Y1 and Y | 01/04/2005 |
| 6811832 | Ortho substituted benzaldehydes, preparation thereof and use thereof Compounds of the formula (I): in which X1=H or F, X2=H or F, and Y=Cl, Br or I, are prepared by reacting, in a solvent or solvent mixture at a temperature below −60° C., a halobenzene of the fo... | 11/02/2004 |
| 6812311 | Highly stable packaging substrates A method of producing a highly stable packaging substrate in which are provided a first precursor having a first backbone and a first ethynyl group, and a second precursor having a second backbone and a second ethynyl group. Furthermore provided is a crosslinker hav... | 11/02/2004 |
| 6770788 | Process and intermediate compounds for preparation of pesticidal fluoroolefin compounds A two-step process for the preparation of fluoroolefin compounds of formula I wherein R is hydrogen or alkyl, and R1 is alkyl or cyclopropyl, or R and R1 are taken together with the carbon at... | 08/03/2004 |
| 6759101 | Liquid crystalline materials containing perfluoroalkyl and alkenyl tail groups Compounds that are useful as components in liquid crystal compositions, particularly in ferroelectric liquid crystal compositions. Compounds of the invention are rod-like molecules with a mesogenic (generally linear) core to which an alkene tail and an alkyl or alko... | 07/06/2004 |
| 6733883 | Fluorinated dendrons and self-organizing ultrahigh density nanocylinder compositions This invention relates to novel fluorinated dendrons and to a universal strategy for producing functional fluorinated dendrons programmed to self-assemble into supramolecular nanocylinder compositions containing p-stacks of high electron or hole mobility donors (D),... | 05/11/2004 |
| 6713135 | Materials for inducing alignment in liquid crystals and liquid crystal displays The present invention provides novel polyimides, poly(amic acids) and poly(amide esters) thereof, and optical alignment layers derived therefrom, for inducing alignment of liquid crystals and liquid crystal displays. The novel compositions comprise side-chain polyme... | 03/30/2004 |
| 6696111 | Liquid-crystalline medium A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula IA and/or IB ##STR1## in which Ra, Rb, Ya... | 02/24/2004 |
| 6693223 | Fluorine-substituted-4-alkenylbenzoic acid and derivatives thereof, and nematic liquid crystal composition containing cyanophenyl benzoate derivatives and liquid crystal display system using the same A novel liquid crystal compound, a nematic liquid crystal composition, and a liquid crystal display system using the composition are disclosed herein. The liquid crystal compound is represented by the general formula (I): ##STR1## wherein R represent... | 02/17/2004 |
| 6685995 | Ester compounds, liquid crystal compositions and liquid crystal display devices Liquid crystalline compounds suitable for driving at a low voltage and at a wide temperature range, and suitable for high speed response, liquid crystal compositions comprising the compound, and liquid crystal display devices comprising the liquid crystal... | 02/03/2004 |
| 6682661 | Electrooptical liquid crystal system To improve switching times, especially at low temperatures, one or more reactive liquid crystalline compounds is added to a liquid crystal mixture used in an electroptical system. The electroptical system comprises a PDLC film comprising a liquid crystal ... | 01/27/2004 |
| 6670511 | Fluorine-containing diene, its production method and its polymer A fluorine-containing diene represented by the formula 1: wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not ... | 12/30/2003 |
| 6653515 | Synthesis of , ଲ, ଲ-trifluorostyrene via in-situ formation of trifluorovinyl metal halide ,ଲ,ଲ-Trifluorostyrene and derivatives thereof synthesized in two steps from 1,1,1,2-tetrafluoroethylene. In the first step, 1,1,1,2-tetrafluoroethylene is reacted with a base, a metal salt such as zinc chloride and an optionally amine t... | 11/25/2003 |
| 6649227 | Difluorovinyl compound, liquid crystal composition and liquid crystal display Provided are liquid crystalline compounds having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33 /K11 and excellent solubility at low temperature, a liquid crystal composition using th... | 11/18/2003 |
| 6635318 | Tetracyclic and pentacyclic compounds, and their use in liquid-crystalline media Disclosed is a tetracyclic compound of the formula I ##STR1## in which R1, R2 are each, independently of one another, an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF | 10/21/2003 |
| 6623810 | Phenylacetylene compound, liquid crystal composition, and liquid crystal element produced with the same The present invention provides novel phenylacetylene compounds, liquid crystal compositions having a large refractive index anisotropy (Ɗn), and liquid crystal elements produced with the same. The liquid crystal composition contains at least one compound... | 09/23/2003 |
| 6610219 | Functional materials for use in optical systems Functional optical materials for optical systems that are typically useful in optical waveguides, optical switching systems, optical modulators, optical computing systems and the like. Included are polymer systems and electrooptical chromophores. Polymers... | 08/26/2003 |
| 6599590 | Fluoro-substituted alkenyl compounds, liquid crystal compositions, and liquid crystal display elements The invention relates to a fluoro-substituted alkenyl compound represented by formula (1) ##STR1## wherein Y1, Y2, Y3 and Y4 are each independently H or F, provided that at least one of Y1 and Y2... | 07/29/2003 |
| 6552228 | Exchange and to the release of an amine from its carbamoyl fluoride The present invention relates to a process for the treatment of an aryl carbamoyl fluoride comprising in its molecule at least one perhalogenated aliphatic carbon, which carbon carries at least one halogen atom to be exchanged with fluorine. This process ... | 04/22/2003 |
| 6551666 | Cyclohexane derivatives and liquid-crystalline medium The invention relates to cyclohexane derivatives of the formula I ##STR1## in which n, m, p, R1, X1, X2, Z1, Z2, Z3, A1 A2 and Y are as defined above.... | 04/22/2003 |
| 6541674 | Process for the condensation of a carbonyl compound with an aromatic derivative in a basic medium A process for condensing at least one carbonyl compound carrying at least one electron-withdrawing group with an aromatic derivative carrying at least one hydroxyl functional group, wherein the electron-withdrawing group present on the carbonyl compound i... | 04/01/2003 |
| 6528676 | Estrogenic compounds as anti-mitotic agents The application discloses methods of treating mammalian diseases characterized by abnormal cell mitosis by administering estradiol derivatives including those comprising colchicine or combretastatin A-4 structural motifs of the general formulae found belo... | 03/04/2003 |
| 6495728 | Process and intermediate compounds for the preparation of pesticidal fluoroolefin compounds A two-step process for the preparation of fluoroolefin compounds of formula I ##STR1## wherein R is hydrogen or alkyl, and R1 is alkyl or cyclopropyl, or R and R1 are taken together with the carbon atom to which they are attached to ... | 12/17/2002 |
| 6448452 | Fluorine-containing diene, its production method and its polymer A polymer which contains monomer units formed by polymerization of a fluorine-containing diene of formula 1: CF2.dbd.CF(CF2)n CXYOCF.dbd.CF2 Wherein X and Y are hydrogen and chlorine, hydrogen and-bromine, hydrogen a... | 09/10/2002 |
| 6433231 | Method for production of halogen-containing aromatic compound A method for producing inexpensively in a high yield a halogen-containing aromatic compound, particularly a halogen-containing aromatic compound incorporating therein a bromodifluoroalkyl group, and a halogen-containing naphthalene compound useful as a ra... | 08/13/2002 |
| 6388146 | Polymerizable compound, polymerizable resin composition, cured polymer and liquid crystal display device The polymerizable compound of this invention is represented by general formula (I): ##STR1## where R is H, R', R'O, R'COO, or R'OCO, R' is a linear or branched alkyl group or alkenyl group having 1 to about 15 carbon atoms, A1 and A2 | 05/14/2002 |
| 6380432 | Materials for inducing alignment in liquid crystals and liquid crystal displays The present invention provides novel aromatic diamines useful in preparing polyimides for optical alignment layers in liquid crystal displays. The novel compositions comprise side-chains general formula I --L1 --D--L2 --Cf wher... | 04/30/2002 |
| 6350925 | Perhaloethyl aromatic compounds and perhaloethenyl aromatic compounds therefrom A synthesis is provided for ,ଲ-difluoro-ଲ-halo-ethenyl aromatic compounds such as ,ଲ,ଲ-trifluorostyrenes by a process of reacting CFX2 CFXI, wherein each X is independently F or Cl, provided that at least o... | 02/26/2002 |
| 6342572 | Flame retardant benzocyclobutene resin with reduced brittleness The invention pertains to benzocyclobutene resins having flame retardant properties. Such resins have a high glass transition temperature (Tg>250° C.), low moisture absorption, low dielectric constant, good mechanical properties, flame retardancy (meets ... | 01/29/2002 |
