Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
McDonnell; Damien G.
Address:
Malvern, GB2
No. of patents:
13
Patents:












Patent Number Title Of Patent Date Issued
RE31715 Liquid crystal compounds October 30, 1984
Novel liquid crystal compounds are disclosed, which are chiral esters based upon the phenol ##STR1## Typical examples are: ##STR2## and mixtures of these compounds have a helical pitch such that the mixtures reflect light of a specific wavelength when illuminated with ord
5498366 Liquid crystal thiol compounds March 12, 1996
5352381 Liquid crystal thiol compounds October 4, 1994
Compounds of formula (I) where R is C.sub.1-15 alkyl, X is hydrogen, fluorine or chlorine, m and n are independently selected 1 or 0, W is C.sub.1-15 alkyl or alkoxy, CN or halogen, rings A and B Are independently selected from phenyl, laterally fluoro- or chloro- substituted phenyl,
4742173 Dithiene derivative May 3, 1988
A metal dithiene of the formula: ##STR1## wherein R.sup.1 is C.sub.3 to C.sub.20 alkyl;R.sup.2 is selected from alkyl, alkylamino, dialkylamino, alkylthio and alkoxy in which each alkyl contains up to 20 carbon atoms;R.sup.3 is H, halogen or a group represented by R.sup.2 ; andM is a met
4668811 Dithiene derivative May 26, 1987
A metal dithiene of the formula: ##STR1## wherein R.sup.1 is C.sub.3 to C.sub.20 alkyl;R.sup.2 is selected from alkyl, alkylamino, dialkylamino, alkylthio and alkoxy in which each alkyl contains up to 20 carbon atoms;R.sup.3 is H, halogen or a group represented by R.sup.2 ;and M is a met
4566759 Laterally fluorinated liquid crystal materials and frequency change devices January 28, 1986
A liquid crystal composition suitable for use as a two-frequency material in a two-frequency switching device comprises a mixture of:a first component comprising at least one diester compound having a formula: ##STR1## where R.sub.1 is an alkyl or alkoxy group, Z is an cycloalkyl or
4544497 Liquid crystal materials containing substituted bicyclo(2,2,2)octanes October 1, 1985
Liquid crystal compositions are described which comprise a mixture of compounds and which includes at least one additive compound characterized in that the composition includes one or more additive compounds of Formula I as follows: ##STR1## wherein R.sub.1 represents an alkyl gr
4483595 Liquid crystal compositions November 20, 1984
A nematic liquid crystal composition suitable for use as the liquid crystal material of a multiplexed twisted nematic electro-optical display comprising a mixture of Components A, B and C as follows:Component A: a high dielectric anisotropy component;Component B: a low dielectric anisotropy
4482472 Liquid crystal materials November 13, 1984
A liquid crystal material which comprises a mixture of compounds includes at least one low viscosity additive compound of Formula (I) as follows:wherein A is selected from: ##STR1## and B is selected from: ##STR2##where R.sub.1 is selected from alkyl, alkoxy, alkylcarbonyloxy and
4468137 Temperature indicating devices August 28, 1984
A temperature indicating device comprising a series of liquid crystal cells each of which contains a liquid crystal material having a different composition, the composition varying from cell-to-cell, and each of which cells exhibits the grandjean state whereby temperature is indicated by
4261652 Liquid crystal compounds and materials and devices containing them April 14, 1981
A novel liquid crystal compound has the molecular structure: ##STR1## where R is an alkyl group, which may contain up to 18 carbon atoms and which may be normal or branched and may contain a chiral center, ##STR2## is a bicyclo (2.2.2) octane ring, --X-- is and Y is a cyano grou
4261651 Liquid crystal compounds April 14, 1981
A liquid crystal compound having the formula: ##STR1## where X is --CH.sub.2.CH.sub.2 -- or CH.sub.2 OY is ##STR2## and R is a straight or branched (possibly chiral) alkyl group having up to 15 carbon atoms.
4219256 Liquid crystal compounds and materials and devices containing them August 26, 1980
A novel liquid crystal compound has the molecular structure: ##STR1## where R is an alkyl group, which may contain up to 18 carbon atoms and which may be normal or branched and may contain a chiral center, ##STR2## is a bicyclo (2.2.2) octane ring, ##STR3## is a phenyl ri










 
 
  Recently Added Patents
Manufacturing method for semiconductor device carrier and semiconductor package using the same
Imidazo[1,2-B]pyridazine and pyrazolo[1 .5-A]pyrimidine derivatives and their use as protein kinase inhibitors
Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication syst
Method for implementing dynamic pseudorandom keyboard remapping
Method and system for detecting center pivot collision
Wireless control kit for camera
Phosphor adhesive sheet, light emitting diode element including phosphor layer, light emitting diode device, and producing methods thereof
  Randomly Featured Patents
Large-field unit-magnification catadioptric projection system
Cellular phone
Shaft seal with dust sealing lip
Bonding bio-active materials to substrate surfaces
Head portion protecting air bag apparatus
System and method for a multi-frequency upstream channel in a computer network
Transport stream generating device, transmitting device, receiving device, and a digital broadcast system having the same, and method thereof
Impact polypropylene
Rotation detection sensor
Membrane electrode assembly with integrated seal