"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8043527 | Liquid crystalline polyester resin composition and molded article thereof The present invention provides a liquid crystalline polyester resin composition suitable for an optical pickup unit. The composition comprises a liquid crystalline polyester, a mica and a hollow filler. Using the liquid crystalline polyester resin composition, an op... | 10/25/2011 |
| 8034255 | Liquid crystal compositions This invention relates to a liquid crystal composition and articles comprising the composition. The composition comprises at least one compound of each of the Formulas (I), (II) and (III), as defined herein. A process for m... | 10/11/2011 |
| 7879256 | Liquid crystal compositions, polymer networks derived therefrom and process for making the same The invention relates to compounds of Formula (I): The invention further relates to liquid crystal compositions comprising compounds of Formula (I); compositions further comprising one or more chiral compounds; and polymer ... | 02/01/2011 |
| 7771618 | Liquid crystal material and optical compensated bend mode liquid crystal display A liquid crystal material including an optical compensated bend mode liquid crystal molecule and a bend molecule is provided. The bend molecule has a structure presented as formula (1): In formula (1), the symbol A represents... | 08/10/2010 |
| 7534371 | Liquid crystalline compound, liquid crystalline composition and retardation film To provide a liquid crystalline composition, which can be obtained by mixing a plurality of liquid crystalline compositions each of which can exhibit different liquid crystal phases from one another, being capable of exhibiting a biaxial liquid crystal phase, a liqu... | 05/19/2009 |
| 7442418 | Polymerizable liquid crystal compound, liquid crystal composition, optical anisotropic material and optical element The present compound represented by formula(I) CH2═CR1—COO—(L)k-E1-E2-E3-(E4)m-(E5)n-R2 (1) provided that the symb... | 10/28/2008 |
| 7435455 | Dihydrocoumarin derivative, liquid crystal composition containing the same, and liquid crystal display device A dihydrocoumarin ring-containing compound of the invention is represented by the following formula (1): wherein R represents hydrogen or an alkyl; A1 to A3 each represents 1,4-cyclohexylene or 1,4-phe... | 10/14/2008 |
| 7429411 | Chroman compound, liquid crystal composition including the compound and liquid crystal display element including the liquid crystal composition The compound (1) according to the invention has general solid-state properties necessary for a compound, stability against heat, light and the like, a suitable optical anisotropy, a suitable dielectric anisotropy, and excellent compatibility with other liquid crysta... | 09/30/2008 |
| 7425281 | Liquid crystal compositions comprising an organogermanium compound and methods for using the same The present invention provides organogermanium compounds and liquid crystal compositions comprising such a compound. ... | 09/16/2008 |
| 7419706 | Liquid crystalline medium The present invention relates to a liquid crystalline mixture comprising a) 1-25% by weight of at least one compound of the formula I b) 5-80% by weight of at least one compound of the formula II... | 09/02/2008 |
| 7419705 | Liquid-crystalline medium The invention relates to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the formula I in which R1, L1 and L2 a... | 09/02/2008 |
| 7416765 | Polymerizable liquid crystalline composition and liquid crystal film made from the composition A polymerizable liquid crystalline composition comprises a side chain liquid crystalline polymer obtained by radical-copolymerizing a (meth)acrylic compound has an optically active site and a (meth)acrylic compound having an oxetanyl group, and a cation generator an... | 08/26/2008 |
| 7413782 | Polymerizing binaphthalene derivatives Provided are a polymerizing liquid-crystalline compound of formula (1). In formula (1), Q1 to Q4 each independently represent a formula (2), a hydrogen atom, a halogen atom, an alkyl group or the like;... | 08/19/2008 |
| 7407691 | Photopolymerizable oxetane derivative and liquid-crystal composition containing it Provided are a liquid-crystal compound and a liquid-crystal composition containing the compound, of which the advantages are that they show nematic hybrid orientation on a rubbed TAC substrate, they are polymerizable in open air and they readily give a polymer havin... | 08/05/2008 |
| 7404992 | Liquid crystal composition and liquid crystal display device A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound represented by formula (1), at least one compound represented by formula (2), at least one compound represented by formula (4), at least one compound represente... | 07/29/2008 |
| 7396486 | Polymerizable mixtures A mixture which is polymerizable to polymers exhibiting a high optical anisotropy which is stable during polymerization. The mixture contains a first monomer or (and/or) oligomer having two or more polymerizable functional groups and optionally a mesogenic group; a ... | 07/08/2008 |
| 7393467 | Wholly aromatic liquid-crystalline polyester and method for preparing the same Provided is a liquid-crystalline polyester with good properties obtainable by subjecting a prepolymer consisting of the repeating units represented by formulae (I), (II), (III) and (IV): to heat treatment in a substantially... | 07/01/2008 |
| 7390539 | Liquid crystal composition and liquid crystal display device A liquid crystal composition having a negative dielectric anisotropy and containing at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by form... | 06/24/2008 |
| 7381350 | Fluorene derivatives and polymers thereof The compound (1) or (2), a composition containing the compound and a polymer obtained by polymerizing the composition. R1 is fluorine, cyano, alkyl, and so forth; R2 is hydrogen, alkyl, and so forth; R... | 06/03/2008 |
| 7378135 | Polymerizable liquid crystal composition and optically anisotropic thin film In order to obtain such a liquid crystal thin film having optical anisotropy that suffers less change in optical characteristics thereof under heating to 200° C., the following polymerizable liquid crystal composition is provided as a raw material therefor. The com... | 05/27/2008 |
| 7371437 | Liquid-crystalline medium A liquid-crystalline medium based on a mixture of polar compounds having at least one compound of the formula I in which R11, R12 and have the meanings indic... | 05/13/2008 |
| 7371438 | Polymerizable liquid crystal compound, liquid crystal composition and optical anisotropic material To provide a novel compound which satisfies characteristics required for an optical anisotropic material and which is excellent in durability against blue laser light, a liquid crystal composition containing the compound and an optical anisotropic material employing... | 05/13/2008 |
| 7357964 | Liquid-crystalline vinyl ketone derivatives and their polymers Provided is a liquid-crystalline, polymerizable vinyl ketone compound of formula (1): Preferably, R1 is hydrogen, halogen, —CN, —CF3, —CF2H, —CFH2, —OCF3, —... | 04/15/2008 |
| 7354887 | High temperature LCP for wear resistance A high temperature liquid crystalline polyester (LCP) composition, and articles made therefrom, that provides “good” to “excellent” wear resistance at PVs (pressure×velocity) of at least 1.75 MPa-m/s (50,000 psi-fpm). The high temperature LCP being a matrix... | 04/08/2008 |
| 7344762 | Printable liquid crystal material The invention relates to the use of a printable polymerisable liquid crystal material as printable system for the preparation of polymers and pigments, to printable polymerisable liquid crystal materials and pigments and polymers prepared thereof, and to the use of ... | 03/18/2008 |
| 7341675 | Liquid crystalline polymer composition Liquid crystalline polymers containing specified ratios of repeat units derived from hydroquinone, 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid and optionally terephthalic acid have exceptionally high heat distortion temperatures, making especially useful... | 03/11/2008 |
| 7335405 | Nematic liquid crystal mixtures for use in bistable display devices A method of using a liquid crystal composition in a bistable liquid crystal device having a weak zenithal anchoring comprising at least 40% by weight of compounds with strong molecular polarisability and strong dipole moment. ... | 02/26/2008 |
| 7335318 | Method for manufacturing wholly aromatic liquid-crystalline polyester resin The present invention provides a method for manufacturing a wholly aromatic liquid-crystalline polyester resin comprising the steps of: 1) acylating the hydroxy group of major monomer components selected from the group consisting o... | 02/26/2008 |
| 7335404 | Liquid crystal composition for use in bistable liquid crystal devices The invention is directed to the use of a liquid crystal composition in a bistable liquid crystal device and especially in a single polariser reflective or transflective zenithal bistable nematic liquid crystal device as well as a bistable liquid crystal device comp... | 02/26/2008 |
| 7326450 | High-speed high-temperature nematic liquid crystal composition and liquid crystal display comprising the same The present invention relates to a high-speed high-temperature nematic liquid crystal composition and a liquid crystal display comprising the same, particularly to a high-speed high-temperature nematic liquid crystal composition which comprises a nematic liquid crys... | 02/05/2008 |
| 7316830 | Liquid-crystalline phenol esters The invention relates to liquid-crystalline phenol esters of the formula I in which R, A1, Z1, m, L and Y are as defined in Claim 1, to liquid-crystalline media comprising a... | 01/08/2008 |
| 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 |
| 7314653 | Liquid-crystal medium and electro-optical display containing same Disclosed are nematic liquid-crystal media which have an initial current density of 0.05 μA/cm2 or less and a threshold voltage of 1.0 V or less and their use in liquid-crystal displays, preferably TN or STN displays. ... | 01/01/2008 |
| 7306831 | Liquid crystal composition and liquid crystal display element Liquid crystal composition having negative dielectric anisotropy include a first component having at least two compounds represented by at least two formulas selected from formulas (1-1) to (1-6) in the range of 20 to 75% by weight based on the total weight of the l... | 12/11/2007 |
| 7303695 | Process for producing optically active liquid crystalline polymer compound A process is provided for producing efficiently an optically active liquid crystalline polymer compound excellent in mechanical strength or optical characteristics at low cost, in which in that a liquid crystal polymer compound having in its main chain or side chain... | 12/04/2007 |
| 7303791 | Liquid crystalline medium The invention relates to a liquid-crystalline medium comprising at least one compound of the formula I in which X, Z1, Z2, Z | 12/04/2007 |
| 7300604 | Tetrahydroxybenzene tetraester derivative and polymer thereof The invention includes compounds represented by Formula (1): wherein R1 is an alkyl having 1 to 20 carbon atoms; A1 and A2 are a 1,4-cyclohexylene or 1,4-phenylene; X is a single ... | 11/27/2007 |
| 7294368 | Liquid crystal composition for use in bistable liquid crystal devices The invention is directed to the use of a liquid crystal composition in a bistable liquid crystal device and especially in a zenithal bistable nematic liquid crystal device, a nematic liquid crystal medium, and a bistable liquid crystal device comprising the liquid ... | 11/13/2007 |
| 7294369 | Polymerisable cinnamates with lateral substitution The invention relates to new polymerisable mesogenic or liquid crystalline compounds comprising a laterally substituted cinnamate group, to polymerisable mesogenic or liquid crystalline mixtures and anisotropic polymers prepared thereof, and to the use of the new co... | 11/13/2007 |
| 7264748 | Aqueous mini-emulsions which are stable in storage and based on cholesteric mixtures A storage-stable aqueous miniemulsion whose disperse phase comprises a cholesteric mixture is prepared and is used for coating and printing on suitable substrates. ... | 09/04/2007 |