Patents for C09K 19 - Liquid crystal materials (21,026)
08/1981
08/04/1981CA1106406A1 Liquid crystal compounds
07/1981
07/28/1981CA1105793A1 Venipuncture method and composition useful therein
07/22/1981EP0032362A1 Chiral smectic liquid crystal electro-optical device and process of making the same
07/21/1981US4279771 (2'-Cyano-4'-n-alkyl)phenyl-3-chloro-4-n-alkoxy benzoates and liquid crystal compositions thereof
07/21/1981US4279770 Liquid crystal 2,3-dicyano-hydroquinone derivatives
07/14/1981US4278328 Guest-host liquid crystal display device
07/01/1981EP0031021A1 Tetrahydroquinazolines, process for their preparation, liquid crystalline dielectrics containing them and electro-optical display element
06/1981
06/24/1981EP0030879A1 Mixture of disc-like liquid crystals, electrooptical device using such a mixture and method for the orientation of the molecules in the mixture
06/24/1981EP0030761A1 Anisotropic cyclohexyl ethers
06/17/1981EP0030277A1 Partially hydrogenated oligo-1,4-phenylenes, dielectrics containing them and electro-optical indicating device
06/16/1981US4273929 Heterocyclic compounds
06/16/1981US4273420 Liquid crystal display device
06/10/1981EP0029959A2 Liquid crystalline phase of a reactive azo dyestuff and its use in dyeing and printing natural and synthetic substrates
06/10/1981EP0029958A2 Liquid crystalline phase of a reactive azo dyestuff and its use in dyeing and printing natural and synthetic substrates
06/09/1981US4272162 Guest-host liquid crystal display device
06/02/1981US4270841 Light valve containing suspension of perhalide of alkaloid acid salt
05/1981
05/27/1981EP0029162A1 Compositions presenting liquid-crystal phases, process for their production and their use
05/13/1981EP0028520A1 Improved liquid crystal compositions for multiplexed displays
05/13/1981EP0028519A1 Liquid crystal compositions for multiplexed displays
05/05/1981US4265784 Azine liquid crystal compounds for use in light-control devices
04/1981
04/28/1981US4264148 Liquid crystal display devices having an induced cholesteric phase
04/21/1981CA1099809A1 Electro-optic display methods
04/14/1981US4261652 Liquid crystal compounds and materials and devices containing them
04/14/1981US4261651 Liquid crystal compounds
04/07/1981CA1099040A1 Photoconductor control of electro-optically variable display cell
04/02/1981WO1981000853A1 Liquid crystal material with low value of optical anisotropy and method of making it
04/01/1981EP0026004A1 Liquid crystals mixture
04/01/1981EP0025809A1 Liquid crystals mixture
03/1981
03/24/1981US4257911 Liquid crystal materials
03/24/1981US4257910 Liquid crystal of diester type exhibiting a smectic phase, with low frequency of dielectric isotropy, and display device utilizing this crystal
03/24/1981US4257682 Liquid crystal color display cell
03/18/1981EP0025119A1 Nematic crystalline-liquid 5-alkyl-2-(4-acyloxyphenyl)-pyrimidines for opto-electronic arrangements and process for their preparation
03/17/1981US4256656 Mesomorphous 4-alkoxytetrafluorobenzoic acid esters
03/03/1981US4253740 Liquid crystal materials and devices containing them
02/1981
02/24/1981US4252417 Liquid crystal display
02/19/1981WO1981000463A1 Display device with dynamic internal polarizer
02/17/1981CA1096023A1 Fast turn-off nematic liquid optical devices
02/11/1981EP0023730A1 Cyclohexylcyclohexanoates, process for their preparation and liquid-crystal mixture containing them
02/11/1981EP0023728A1 Anisotropic compounds with negative or positive direct anisotropy and limited optical anisotropy, and liquid crystal mixtures containing them
01/1981
01/28/1981EP0022882A1 Anisotropic carboxylic-acid-4-cyclohexylphenyl esters and mixtures of liquid crystals containing them
01/14/1981EP0022183A2 Derivatives of cyclohexylbiphenyl, process for their preparation, dielectrics containing them, and electron optical indicating elements
12/1980
12/23/1980US4240712 Thermo-optique smectic liquid-crystal storage display
12/10/1980EP0019665A1 Liquid-crystal compositions
12/02/1980US4237026 Liquid crystalline carboxylic acid esters
11/1980
11/26/1980EP0019060A1 Diketones, process for their preparation and their use as components of liquid-crystalline dielectrics
11/25/1980US4235736 Liquid crystals for use in display systems
11/25/1980CA1090372A1 Optically active cyano-biphenyl compounds and liquid crystal materials containing them
11/11/1980US4232951 Display device for memory or temperature functions
11/11/1980US4232950 Liquid crystal compositions including pleochroic dye
11/11/1980US4232949 Liquid crystal compositions containing pleochroic dye
10/1980
10/28/1980US4230596 Electrooptics
10/21/1980US4229367 Preparation of trans-4-alkyl-cyanoarylcyclohexanes
10/21/1980US4229315 Liquid crystalline cyclohexane derivatives
10/14/1980US4228087 Mesogenic products for liquid crystal cells
10/14/1980US4228030 Liquid crystal compositions
10/14/1980US4228029 High positive dielectric anisotropy, low viscosity
10/14/1980US4227778 Liquid crystal material mixtures and devices incorporating such mixtures
09/1980
09/30/1980US4225454 Ortho-cyanophenyl biphenylcarboxylate liquid crystal esters and mixtures thereof
09/16/1980US4222888 Liquid crystal materials containing a diphenylethane nucleus
09/16/1980US4222887 Liquid crystal composition
09/16/1980US4222636 Liquid crystal mixture and its application to optical modulation
09/03/1980EP0014885A1 Cyclohexylpyrimidines, their preparation and use, as well as liquid crystals mixtures and electro-optical apparatuses containing these compounds and their preparation
09/03/1980EP0014840A1 Fluorphenyl-trans-cyclohexanes, process for their preparation, liquid crystalline dielectrics containing them and electrooptical displaying means
08/1980
08/26/1980US4219256 Liquid crystal compounds and materials and devices containing them
08/26/1980US4219255 Temperature compensated liquid crystal devices
08/05/1980US4216109 Liquid crystal composition and method for making same
07/1980
07/29/1980CA1082706A1 Optically active compounds
07/15/1980US4212762 Liquid crystal materials having a formula containing a diphenylethane nucleus
07/09/1980EP0012820A1 Liquid crystalline carboxylic acid esters, process for their preparation, dielectrics containing them and electro-optical display device
07/08/1980US4211666 Liquid crystal compounds
07/08/1980US4211473 Liquid crystal display devices
06/1980
06/17/1980US4208106 Fluorescent dye, liquid crystal
06/10/1980US4207252 For electrooptical display materials
06/03/1980US4206071 Liquid crystal composition
05/1980
05/20/1980US4203862 Liquid crystal composition
05/14/1980EP0011002A1 Organic mesomorphic compound whose chemical formula derives from a 4-alkoxy-tetrafluorobenzoic acid, and liquid crystal device using such a compound
05/14/1980EP0010739A1 Light diffuser
05/13/1980US4202791 Used as electrooptical display material
04/1980
04/29/1980US4200580 Dioxanylphenyl benzoate liquid crystal compounds
04/15/1980US4198312 3'-Chloro-4'-cyanophenyl 4-n-alkylbenzoates
04/15/1980US4198130 Liquid crystal mixtures
04/08/1980US4196975 Azine liquid crystal compounds for use in light-control devices
04/08/1980US4196974 Smectic liquid crystal display cell
04/01/1980US4195916 Liquid crystal compounds
03/1980
03/19/1980EP0008956A1 Improvements in or relating to liquid crystal materials and devices
03/11/1980US4192133 Electronic watch with means for producing pulse sound at selected intervals
02/1980
02/20/1980EP0008188A1 Liquid crystal compounds and materials and devices containing them
02/06/1980EP0007574A1 Liquid-crystalline polymeric phase with a cholesteric structure, method for its preparation and its use
01/1980
01/08/1980US4182700 Elastomeric polyurethane film containing dispersed discrete aggregates of liquid crystal and method of making the same
01/01/1980US4181625 Liquid crystalline cyclohexylcyclohexanes
12/1979
12/25/1979US4180475 Positive anisotropy of dielectric constants
12/18/1979US4179395 Dichroic dyes having a plurality of azo bonding groups
12/18/1979CA1068096A1 Liquid crystal composition
12/12/1979EP0005793A1 Process for the preparation of trans-4-alkyl-cyanoarylcyclohexanes
12/11/1979US4178302 Electrooptical display materials
12/04/1979US4176918 Fluorescent liquid crystal display
11/1979
11/27/1979US4175543 Venipuncture method
11/14/1979EP0005397A2 Liquid crystal with great negative dielectric anisotropy and electrooptical display device containing such a liquid crystal
11/06/1979US4173545 Liquid crystal with high negative dielectric anisotropy and mixtures of the same with nematic liquid crystals for improving dynamic scattering in electro-optic devices
11/06/1979US4173544 Novel alkylsubstituted N-benzylideneanilines and liquid crystal compositions containing same