U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 6711769

Pillow with retractable umbrella

A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.

Newsletter  PatentStorm News

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.

 

Class 252/299.61 - Including heterocyclic ring


Subclass of Class 252 - Compositions
Definition: Compositions wherein the liquid crystal compound has a ring
No. of patents: 1265
Last issue date: 09/20/2011


1                      
NumberTitleIssue Date
8021572Optical laminate, polarizing plate, image display, and process for producing an optical laminate
An object of the present invention is to provide a thin optical laminate a refractive index of which is three-dimensionally controlled. The optical laminate of the present invention comprises a retardation layer containing a polycyclic compound having at leas...
09/20/2011
7875205Photovoltaic cell
A photovoltaic cell has two electrodes and a hole injection layer. A liquid crystal material and a plurality of particles can be disposed between the electrodes. ...
01/25/2011
7708907Liquid crystal compounds and liquid crystal compositions comprising the same
A liquid crystal compound of Formula (I) is provided. In Formula (I), Y1, Y2 and Y3 are, independently, hydrogen, halogen, cyano or thiocyano, and R is C1-12 alkyl or C1-12 alkoxy, preferably ...
05/04/2010
7674397Reactive mesogenic charge transport compounds
The invention relates to new reactive mesogenic compounds with charge transport properties comprising at least two thiophene groups, their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices like for example liquid ...
03/09/2010
7622056High dielectric anisotropy liquid crystal compound and composition containing the same
The invention relates to a high dielectric anisotropy liquid crystal compound which is a pyridyl derivative with substituents of electrons push-pull effect. Furthermore, the high dielectric anisotropy liquid crystal compounds are colorless and have high thermal and ...
11/24/2009
7442419Liquid-crystalline medium and liquid-crystal display
Disclosed are a liquid-crystalline medium, the use thereof for electro-optical purposes, and displays containing this medium, characterised in that the medium contains one or more compounds of formula I and one or more comp...
10/28/2008
7438956Liquid-crystalline medium and liquid-crystal display
Disclosed are liquid-crystalline medium, use thereof for electro-optical purposes, and displays containing this medium, wherein the medium contains one or more compounds of formula I and one or more compounds of formulae K-...
10/21/2008
7435455Dihydrocoumarin 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
7429411Chroman 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
7425281Liquid 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
7425354Photopolymerizable liquid crystal composition, its polymer or polymer composition, and optical compensation element
The present invention provides a photopolymerizable liquid crystal composition comprising at least a compound having oxiranyl as a first component and at least a compound having oxetanyl as a second component, a polymer or a polymer composition obtained from the liq...
09/16/2008
7419620Dichroic mixtures
A mesogenic, crosslinkable mixture comprising at least one polymerisable liquid crystal and at least one polymerisable dichroic dye of the general formula I: wherein A represents a dichroic residue exhibiting at lea...
09/02/2008
7419706Liquid 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
7416765Polymerizable 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
7413782Polymerizing 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
7407691Photopolymerizable 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
7396486Polymerizable 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
7381350Fluorene 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
7372071Functionalized heteroacenes and electronic devices generated therefrom
An electronic device, such as a thin film transistor containing a semiconductor of, for example, of the Formula (I) wherein R represents alkyl, alkoxy, aryl, heteroaryl or a suitable hydrocarbon; each R1 and R
05/13/2008
7371437Liquid-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
7372533Substrate for liquid crystal display and liquid crystal display utilizing the same
It is an object of the invention to provide a substrate for a liquid crystal display having optical transmittance improved without reducing the speed of a response to a tone change and a liquid crystal display utilizing the same. There is provided a drain bus line f...
05/13/2008
7364670Liquid 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...
04/29/2008
7361388Liquid-crystalline compounds having a tetrahydropyran ring
The invention relates to liquid-crystalline compounds of formula (I), wherein R11, X11, Z11, Z12, Z13, L11, L12, L13, L14, L15 and L16 have the m...
04/22/2008
7361288Components for high-frequency technology
The present invention relates to switchable components for high-frequency technology, in particular microwave technology, which use liquid-crystalline dielectrics, to the liquid-crystal materials, to the use thereof, and to a process for the production of the compon...
04/22/2008
7357964Liquid-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
7351452Liquid 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
7344761Liquid-crystalline compounds
The invention relates to liquid-crystalline compounds of the formula (I), where R11, X11, L11, Y and W are as defined in claim 1, and to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one...
03/18/2008
7335658Pyridazine derivatives and their use as therapeutic agents
Methods of treating an SCD-mediated disease or condition in a mammal, preferably a human, are disclosed, wherein the methods comprise administering to a mammal in need thereof a compound of formula (I): ...
02/26/2008
7336271Image display system
An image display system includes a screen comprising a pair of substrates with transparent electrodes provided thereon, and a liquid crystal layer sandwiched between the substrates, the liquid crystal layer containing a cured resin and being capable of exhibiting a ...
02/26/2008
7335404Liquid 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
7335405Nematic 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
7335403Liquid-crystalline medium
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy, which comprises at least one compound of the formula (I) in which R0, R1, A1, Z1 and m have ...
02/26/2008
7329896Polymerizable charge transport compounds
The invention relates to polymerizable charge transport compounds, their use as semiconductors or charge transport materials, in optical, electrooptical or electronic devices like for example organic field effect transistors (FET or OFET) for thin film transistor li...
02/12/2008
7326447Benzochromene derivatives
The present invention relates to benzochromene derivatives of the formula I in which the various parameters are as defined in the text, and to liquid-crystal media which comprise these compounds, and to the use o...
02/05/2008
7326450High-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
7318950Chiral 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
7316830Liquid-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
7314653Liquid-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
7314943Pyran derivatives containing an exocyclic double bond
The invention relates to pyran derivatives of formula I and processes and intermediates for their preparation and derivatisation, and the use thereof in liquid-crystalline media. ...
01/01/2008
7314580Compound, 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
1                      
 
Sign InRegister
Username  
Password   
forgot password?