Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7438833 | Organic species that facilitate charge transfer to or from nanostructures The present invention provides compositions (small molecules, oligomers and polymers) that can be used to modify charge transport across a nanocrystal surface or within a nanocrystal-containing matrix, as well as methods for making and using the novel compositions. | 10/21/2008 |
| 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 |
| 7211643 | 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. ... | 05/01/2007 |
| 7148066 | Dye solutions for use in methods to detect the prior evaporation of anhydrous ammonia and the production of illict drugs Systems and methods providing for the introduction of a dye, particularly a xanthene dye, and more particularly a rhodamine dye, to liquid anhydrous ammonia to discourage theft of the anhydrous ammonia and provide for leak detection in storage vessels. The dye will ... | 12/12/2006 |
| 6998181 | Polymer and uses thereof A polymer including a region having a conjugated backbone capable of transporting negative charge carriers, which region includes a plurality of repeat units each including a core group which includes an [Ar′] group substituted with at least one pendant group X an... | 02/14/2006 |
| 6921591 | Luminescent device material, luminescent device using the same, and amine compound An organic luminescent device material, comprising an amine compound represented by the following formula (I): wherein R1, R2 and R3, which are the same or different, each represents an... | 07/26/2005 |
| 6852250 | Compositions produced by solvent exchange methods and articles of manufacture comprising same Disclosed are coatings, films, and articles of manufacture comprising or derived from compositions that are produced by a method for exchanging solvent in a mixture that includes water and an optionally substituted thiophene. Also disclosed are methods for making an... | 02/08/2005 |
| 6828044 | Dopant in an electroluminescent device Disclosed is an organic light emitting diode device containing a light emitting layer (LEL) comprising a host and a blue light emitting dopant wherein the dopant comprises a 2-(3-aminophenyl)-benzofuran or 2-(4-aminophenyl)-benzofuran compound. The dopant provides i... | 12/07/2004 |
| 6821649 | Organic EL device and preparation method In an organic EL device comprising a cathode, an anode, and two or more stacked organic layers therebetween including a light emitting layer, an electron injecting organic layer containing an organic salt or complex of a metal having a standard electrode potential o... | 11/23/2004 |
| 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 |
| 6692662 | Compositions produced by solvent exchange methods and uses thereof Disclosed are compositions formed by a method for exchanging solvent in a mixture that includes water and an optionally substituted thiophene. Also disclosed are methods for making and using such compositions.... | 02/17/2004 |
| 6692663 | Compositions produced by solvent exchange methods and uses thereof Disclosed are compositions formed by a method for exchanging the water in an optionally substituted polythiophene dispersion with a specific mixture of organic solvents. The resulting compositions exhibit improved electrical conductivity, optical transpar... | 02/17/2004 |
| 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 |
| 6649089 | Red organic electroluminescent materials A red fluorescent material comprising a compound of Formula I: ##STR1## wherein R1, R2, R3, R4, R5, and R6 each independently represents a linear or branched aliphatic group having from 1 t... | 11/18/2003 |
| 6534427 | Night glow glaze for ceramics A lead-free glow in the dark glaze is provided for ceramic bisques. It includes Frit, Lithium Carbonate, Borax, carboxmethylceullulose and a phosphorus pigment. In some applications, Bentonite and/or Magnesium Sulfate are used. Preservatives and defloccul... | 03/18/2003 |
| 6387296 | Optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner Paper coating slips having high whiteness, high greying limit and high lightfastness can be prepared with the aid of whitened finely divided plastics.... | 05/14/2002 |
| 6303403 | Method for preparing gallium nitride phosphor A method for preparing a gallium nitride phosphor which is capable of emitting light at luminance increased to a degree sufficient to permit the phosphor to be practically used. A dopant compound containing elements reacted with H2 and gasified... | 10/16/2001 |
| 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 |
| 6228904 | Nanostructured fillers and carriers A nanocomposite structure comprising a nanostructured filler or carrier intimately mixed with a matrix, and methods of making such a structure. The nanostructured filler has a domain size sufficiently small to alter an electrical, magnetic, optical, elect... | 05/08/2001 |
| 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 |
| 6117189 | Protective method The present invention relates to a method for the improvement of the sun protection factor (SPF) of textile fiber material, comprising applying to the textile fiber material a detergent comprising at least one fluorescent whitening agent, which absorbs ra... | 09/12/2000 |
| 6063181 | 1,7-disubstituted perylene-3,4,9, 10-tetracarboxylic acids, their dianhydrides and diimides of said acids 1,7-Disubstituted perylene-3,4,9,10-tetracarboxylic dianhydrides I and perylere-3,4,9,10-tetracarboxylic acids Ia ##STR1## where L1, L2 independently of one another are 1,2-ethylene, 1,2-ethenylene and 1,2-ethynylene, and R... | 05/16/2000 |
| 6002000 | Chemiluminescent compounds and methods of use Methods are disclosed for determining an analyte in a medium suspected of containing the analyte. One method comprises providing (1) combining a medium suspected of containing the analyte and a novel chemiluminescent compound, (2) combining a means for ch... | 12/14/1999 |
| 5976410 | Dispersions of fluorescent whitening agents Disclosed are dispersions of fluorescent whitening agents which are suitable for the fluorescent whitening of coating compositions for coating paper or of fibre dispersions (paper pulps) in paper production.... | 11/02/1999 |
| 5908581 | Red organic electroluminescent materials A red fluorescent material includes a compound of the formula: ##STR1## wherein: R1, and R2 are individually alkyl of from 1 to 20 carbon atoms, aryl, carbocyclic and other heterocyclic systems; and R3, and R4 a... | 06/01/1999 |
| 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 |
| 5545834 | Chemiluminescent compounds and methods of use Methods are disclosed for determining an analyte in a medium suspected of containing the analyte. One method comprises providing (1) combining a medium suspected of containing the analyte and a novel chemiluminescent compound, (2) combining a means for ch... | 08/13/1996 |
| 5543079 | Polymeric fluorescent substance and organic electroluminescence devices using the same A polymeric fluorescent substance which is soluble in solvents, has a number average molecular weight of 103 to 107 and contains, as main constituents, three different repeating units A, B and C selected from various repeating units ... | 08/06/1996 |
| 5512620 | Benzoxazolyl optical brightners in and for thermoplastic compositions Benzoxazolyl brightner compounds and thermoplastic combinations containing such are provided herein. The thermoplastic compositions comprise a thermoplastic resin, a phosphite heat stabilizer present in reduced levels, a brightner present in reduced level... | 04/30/1996 |
| 5480723 | Surface-bound fluorescent polymers and related methods of synthesis and use A fiber optic sensing device for measuring a chemical or physiological parameter of a body fluid or tissue is provided. To one end of the fiber is attached a polymer including a plurality of photoactive moieties selected from the group consisting of chrom... | 01/02/1996 |
| 5449477 | Bleach dispersion of long shelf life A bleach dispersion of long shelf life comprising, apart from at least one peracid or salts thereof, one or more fluorescent whiteners of the bis(benzofuranyl) type and the preparation and use of this bleach dispersion for the simultaneous bleaching and w... | 09/12/1995 |
| 5354825 | Surface-bound fluorescent polymers and related methods of synthesis and use A fiber optic sensing device for measuring a chemical or physiological parameter of a body fluid or tissue is provided. To one end of the fiber is attached a polymer including a plurality of photoactive moieties selected from the group consisting of chrom... | 10/11/1994 |
| 5326491 | Detergents containing certain sulfonated dibenzofuranylbiphenyls Novel dibenzofuranylbiphenyl compounds of the formula (I) ##STR1## which are unsubstituted or are monosubstituted or polysubstituted by radicals R=hydrogen, C1 -C4 alkyl, C1 -C4 alkoxy, halogen, phenoxy and... | 07/05/1994 |
| 5256336 | Stable aqueous dispersions of fluorescent brightening agents of the coumarine type and method of preparing same Novel aqueous dispersion comprising 7-diethylamino, 4-methyl coumarine or 7-dimethylamino, 4-methyl coumarine in combination with one or more suitable dispersants, humectants and defoamers are disclosed, as well as a method for preparing these.... | 10/26/1993 |
| 5152922 | 1,4-distyrylbenzene compounds and mixtures thereof with other 1,4-distyrybenzene compounds Novel 1,4-distyrylbenzene compounds of the formula ##STR1## and mixtures thereof with compounds of the formulae ##STR2## and/or ##STR3## in which R1 is C1 -C4 -alkyl or phenyl, R2 is cyano, C... | 10/06/1992 |
| 5089166 | Bleaching and detergent compositions Storage-stable washing and/or bleaching compositions containing a peroxyacid and/or a peroxyacid-yielding compound as bleaching agent are disclosed which contain as optical brightener a benzofuranyl biphenyl compound of the formula: ##STR1## whe... | 02/18/1992 |
| 5084327 | Fluorescent marking liquid A new fluorescent aqueous marking liquid is described, which contains 0.20 to 2.0 % by weight of cumarin C.J. Basic Yellow 40 dye. The liquid is buffered to a pH value of from 3 to 5; it contains an acrylic resin dispersion at a pH of 3 to 5 with a partic... | 01/28/1992 |
| 5041238 | o,o'-Bridged oligophenylene laser dyes, dyestuff lasers and methods of lasing therewith Disclosed are organic laser dyes and more particularly o,o'-bridged oligophenylene laser dyes which when excited to lase emit radiation in various ranges and especially in the ultraviolet and violet ranges, that is, from about 300 nm to about 420 nm, of t... | 08/20/1991 |
| 5037578 | O,O'-bridged oligophenylene laser dyes and dyestuff lasers and method of lasing therewith Disclosed are organic laser dyes and more particularly o,o'-bridged oligophenylene laser dyes which when excited to lase emit radiation in various ranges and especially in the ultraviolet and violet ranges, that is, from about 300 nm to about 420 nm, of t... | 08/06/1991 |
