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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7795431 | Terrylene and quaterrylene derivatives A rylenetetracarboxylic monoimide monoanhydride, a salt thereof; methods of making the rylenetetracarboxylic monoimide monoanhydride and the salt thereof; and materials, additives, and aqueous dispersions containing the rylenetetracarboxylic monoimide monoanhydride ... | 09/14/2010 |
| 7547784 | Methods for preparing and using a zinc complex A method for capturing a substance having an anionic substituent by contacting a substance having an anionic substituent with a zinc complex such that the substance binds to the zinc complex, the zinc complex being represented by a formula (I): | 06/16/2009 |
| 7408061 | Rylene dyes Rylene dyes of the general formula I where the variables are defined as follows: R is hydrogen; optionally substituted C1-C30-alkyl, C5-C8-cyclo... | 08/05/2008 |
| 7358363 | Zinc complexes capable of capturing substances having anionic substituents A zinc complex represented by formula (I-0): {wherein R may be the same or different from each other and represents H; an alkyl group having 1 to 16 carbon atoms; an acyl group, a carboxyalkyl group, an acylalkyl group, a c... | 04/15/2008 |
| 7033541 | Bicarbonate receptor compounds The present invention relates to compounds and more particularly to compounds which are useful for the determination of bicarbonate and the delivery of bicarbonate to a non-aqueous solution. The invention further relates to an optical sensor for the determination of... | 04/25/2006 |
| 6608052 | Compounds useful as anti-inflammatory agents Disclosed are novel aromatic compounds of the formula(I) wherein G, E, W, Ar, X, Y and Z. The compounds are useful for treating diseases or pathological conditions involving inflammation such as chronic inflammatory diseases. Also disclosed are pharmaceut... | 08/19/2003 |
| 6566086 | Diagnostic kit for detecting creatine levels Methods for the detection of creatine compound levels in body fluid samples are discussed. Portable kits capable of determining creatine levels using non-invasive and visually detectable methods are also included.... | 05/20/2003 |
| 5849731 | Indole derivatives and medical application thereof The present invention relates to indole derivatives represented by the following compound 1 and the pharmacologically acceptable acid addition salt thereof. ##STR1## The compounds of the present invention were found to exhibit strong antitussive... | 12/15/1998 |
| 5505743 | Vat dyes Vat dyes obtainable by a) halogenation of dibenzanthrone with bromine in the presence of chlorosulfonic acid and of a halogenation catalyst to a bromine content from 26 to 32% by weight and a chlorine content from 1 to 5% by weight, and b) condensation of... | 04/09/1996 |
| 5405962 | Quaterrylenetetracarbimides Quaterrylene useful as pigments or fluorescent dyes have the formula ##STR1## where the two radicals R are each hydrogen, substituted or unsubstituted C1 -C20 -alkyl or substituted or unsubstituted phenyl.... | 04/11/1995 |
| 5294512 | Pyrene compound, manufacturing method therefor and electrophotographic photoreceptor containing the pyrene compound The photoreceptor comprises a light-sensitive layer on a conductive support or a conductive layer. The light-sensitive layer containes a pyrene compounds.... | 03/15/1994 |
| 5283333 | Cyclic compounds for forming complexes with urea, guanidine and amidine derivatives A chromophoric molecule capable of forming stable complexes with urea, guanidine or amidine compounds and the acid addition salts thereof which comprises a nucleous of heterocyclic rings.... | 02/01/1994 |
| 5095103 | Polycyclic aromatic azacyclic compounds useful in dyeing Heterocyclic compounds of the formula ##STR1## with the substituent meanings given in the description, and derivatives thereof are suitable for dyeing and pigmenting the most diverse substrates.... | 03/10/1992 |
| 5030728 | Cyclic compounds for forming complexes with urea, guanidine and amidine derivatives A molecule capable of forming stable complexes with urea, guanidine or amidine compounds and the acid addition salts thereof comprises a nucleus of heterocyclic rings.... | 07/09/1991 |
| 4792508 | Electrophotographic photoconductive imaging members with cis, trans perylene isomers An improved layered photoresponsive imaging member comprised of a supporting substrate; a photogenerator layer comprised of cis and trans naphthalene imidazole perylene component of the following formula; ##STR1## and an aryl amine hole transport lay... | 12/20/1988 |
| 4780531 | Dichoric dye for color liquid crystals having halogen substituted in perylene structure A dichroic dye for coloring liquid crystal compositions are disclosed which is represented by the following general formula: ##STR1## in which Dye 1 and Dye 2 each represents a group of atoms necessary to form a linear dye structure containing an azo... | 10/25/1988 |
| 4556622 | Electrophotographic recording material whose photoconductor layer contains a halogenated perylene dye sensitizer An electrophotographic recording material consists of (A) an electrically conductive base and (B) a photoconductor layer containing (a) a polymeric binder, which either is itself capable of transporting charge carriers or contains charge carrier-transport... | 12/03/1985 |
| 4547494 | Pyrrolidomoxine cephalosporins A 7ଲ-{(Z)-2-(2-aminothiazol-4-yl)-2-[(2-pyrrolidon-3-yl)oxyimino]acetam ido}-3-(1-amino-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid or a pharmaceutically acceptable salt thereof is useful as an antimicrobial agent.... | 10/15/1985 |
| 4547575 | Vat dyes obtainable by bromination of dibenzanthrone and reaction with 1-aminoanthraquinone Vat dyes which dye cellulosic material in a grey or black shade of good fastness properties are obtained by brominating dibenzanthrone in 80-100% sulfuric acid to a bromine content of 24 to 32%, and reacting the bromination product with 1-aminoanthraquino... | 10/15/1985 |
| 4336383 | 1-1-Binaphthyl-4,4',5,5',8,8'-hexacarboxylic acid compounds, method of preparation and use thereof for the synthesis of asymmetric derivatives of 3,4,9,10-perylenetetracarboxylic acid, and for dyeing and printing of textile materials 1,1'-Binaphthyl-4,4',5,5',8,8'-hexacarboxylic acid compounds having the following formula: ##STR1## wherein R1 is hydrogen, halogen, or alkyl; when X is oxygen, Y is hydrogen, alkyl, a cycloalkyl, or an aryl containing at least one su... | 06/22/1982 |
| 4196294 | Orange anthrapyridine monomeric colorants and colorant precursors Orange colors having the anthrapyridine structure ##STR1## are disclosed wherein R1 and R2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, R3 and R4 | 04/01/1980 |
| 4190726 | Polycyclic dyestuffs In spite of their pigment character, dyestuffs of the formula ##STR1## are outstandingly suitable for dyeing synthetic fibres, in particular polyester fibres, by customary methods, strong yellow dyeings with good fastness to light and sublimation bei... | 02/26/1980 |
| 4156757 | Electrically conductive perylene derivatives Electrically conductive organic perylene derivatives and their use. They have the formulae ##STR1## where R is hydrogen, alkyl or oxaalkyl of 1 to 10 carbon atoms, cycloalkyl, alkaryl or aryl which is unsubstituted or substituted by from 1 to 3 ... | 05/29/1979 |
