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| Number | Title | Issue Date |
| 7259229 | Electroactive fluorene polymers having perfluoralkyl groups, process for preparing such polymers and devices made with such polymers The present invention is generally directed to perfluoroalkylated fluorene polymers. It further relates to a process for preparing the polymers and devices that are made with the polymers. ... | 08/21/2007 |
| 7220820 | Electroactive fluorene copolymers and devices made with such polymers The present invention is generally directed to copolymers of fluorene. It further relates to devices that are made with the copolymers. ... | 05/22/2007 |
| 7063806 | Fluorescent diketopyrrolopyrroles The present invention relates to fluorescent diketopyrrolopyrroles (“DPPs”) of the formula characterized in that that at least two adjacent substituents R5 to R11 form an aromatic or ali... | 06/20/2006 |
| 6914269 | Electron injection composition for light emitting element, light emitting element, and light emitting device In the present invention, an electron injection composition for a light-emitting element, comprising a pyridine derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electro... | 07/05/2005 |
| 6805978 | Pyrromethene metal complex and light emitting device composition and light emitting devices using the same A pyrromethene metal complex is used as a fluorescent dye to form a light emitting device. The light emitting device has a substance which brings about light emission between an anode and a cathode. By applying electrical energy, the device generates emission having... | 10/19/2004 |
| 6689494 | Light emissive materials for organic light emitting devices (OLED) and OLED based thereupon Organic light emitting device (OLED) assemblies having light emitting layers made from boron atom rigidized monomethine cyanines are disclosed. OLED assemblies are constructed by conventional vapor deposition technique as well as by solution spin coating ... | 02/10/2004 |
| 6555959 | Material for light emitting device, light emitting device using thereof, and amine compound A material for a light emitting device which is a compound represented by the following formula (I): ##STR1## wherein Ar1 and Ar6, which are the same or different, each represents a divalent aryl group or a divalent heterocyclic grou... | 04/29/2003 |
| 6508957 | Fluorescent maleimides and uses thereof The present invention relates to methods for using a maleimide of formula (I) ##STR1## with the proviso that R1 and R2 do not simultaneously stand for phenyl or a maleimide of formula Ia ##STR2## as UV fluorescent material for v... | 01/21/2003 |
| 6461747 | Heterocyclic compounds, materials for light emitting devices and light emitting devices using the same Disclosed is a material for a light emitting device excellent in color purity, good in light emitting characteristics and excellent in stability, which consists of a compound represented by the following general formula (I): L.paren open-st.A)m... | 10/08/2002 |
| 6358634 | Nitrogen-containing heterocyclic compound, organic light-emitting device material and organic light-emitting device The present invention provides an organic light-emitting device material such as electron-transporting material and light-emitting material capable of emitting light having a high luminance and color purity. A novel organic light-emitting material is prov... | 03/19/2002 |
| 6274065 | Process for the preparation of fluorescent compositions, fluorescent compositions and their use Preparation of a solid fluorescent composition comprising (1) mixing a host chromophore and an effective amount of a pigment precursor in a solvent, then generating a pigment as guest chromophore in-situ from the pigment precursor, and, subsequently, isolating... | 08/14/2001 |
| 6132640 | Quinoline derivative and use of same Quinoline compound, zinc halogenide complex and zinc complex suited for use in an electro-luminescence (EL) element, a fluorescent material and an ultraviolet absorption material, and a preparation process for these compounds are described. These compound... | 10/17/2000 |
| 6120704 | Mixtures of optical brighteners The invention relates to mixtures of optical brighteners comprising nonionic polyester brighteners and anionic or nonionic polyamide brighteners, which develop a synergistic effect. The brighteners of the invention are suitable for polyamide and polyureth... | 09/19/2000 |
| 5695687 | Anhydrous fluorescent whitening agent formulation The present invention provides an anhydrous fluorescent whitening agent formulation comprising: a) 5 to 60, preferably 15 to 45% by weight of a fluorescent whitening agent or a mixture thereof; b) 0 to 10, preferably 0 to 2% by weight of a stabiliser or a mixt... | 12/09/1997 |
| 5401438 | Indole compound and use of the same Disclosed is a novel UV light absorbing compound which can preferably be employed in the art of colored molding plastics, resin films, heat-sensitive transfer materials, liquid crystal display materials, color photographs and the like, and method for prod... | 03/28/1995 |
| 5298190 | Photochromic fluorescent compositions A composition containing a photochromic material and a fluorescent pigment provides a duality of color in products where the composition is used as the coloring agent. Under ordinary lighting conditions, the composition will provide a brilliant, glowing c... | 03/29/1994 |
| 4336155 | Mixtures of optical brighteners Mixtures of optical brighteners consisting of 5 to 95% by weight of a compound of the formula ##STR1## in which A denotes a o- or p-cyanophenyl group, and 95 to 5% by weight of one or more further optical brighteners.... | 06/22/1982 |
| 4301024 | Use of cyclic chemical compounds for augmenting or enhancing the aroma of optical brightener composition Described are derivatives of 2-oxabicyclo[2.2.2]octanes and precursors therefor, cyclohexenemethanols as well as lower alkyl esters of said cyclohexenemethanols. The oxabicyclooctanes are useful in perfumery and foodstuff, medicinal product and tobacco fl... | 11/17/1981 |
| 4119521 | Fluorescent derivatives of activated polysaccharides The disclosure is of fluorescent deoxyribonucleic acid intercalating agent derivatives of activated polysaccharides such as cyanogen halide-activated agarose and the like. The derivatives are useful fluorescent stain ingredients of water-insoluble gels us... | 10/10/1978 |
| 3971731 | Benzodifuran compounds Benzodifuran compounds of the formula ##SPC1## Wherein R represents alkoxy, aralkoxy, aryloxy, cycloalkoxy, hydroxyl, an oxygen atom linked to the radical Ar, or the group ##EQU1## R1 and R2 independently of one another denote h... | 07/27/1976 |
| 3969373 | Fluorogenic 2-oxy-3(2H)-furanone materials Compounds of the formula ##SPC1## Wherein R1 is lower alkyl or phenyl lower alkyl; R2 is phenyl or substituted phenyl; and R3 is substituted or unsubstituted phenyl, naphthyl or indolyl; Are fluorogenic reagents which reac... | 07/13/1976 |
