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| Number | Title | Issue Date |
| 8067640 | Method for the separation of intermediates which may be used for the preparation of escitalopram The present invention relates to a novel method for the preparation of diol intermediates having the formula (II) and/or the opposite enantiomer of an acylated diol having the formula (IV) useful for the preparation of escitalopram involving selective enzymatic acyl... | 11/29/2011 |
| 7649114 | Separation of stereoisomeric N,N-dialkylamino-2alkyl-3-hydroxy-3-phenylalkanes The invention concerns a method for the isolation of a stereoisomer from a mixture comprising the two stereoisomers of the general formulae (I-A) and (I-A′) and/or the two stereoisomers of the general formulae (I-B) and (I-B′) | 01/19/2010 |
| 7470816 | Tramadol recovery process A process for the resolution of isomeric tramadol mixtures comprising: providing a purification stock comprising both cis and trans tramadol; contacting the purification stock with an acid under conditions effective to form an acid salt of the cis and trans tramadol... | 12/30/2008 |
| 7414153 | Process for preparation of optically active 1-erythro-2-amino-1-phenyl-1-propanol An efficient cost-effective process for preparation of 1-erythro-2-amino-1-phenyl-1-propanol from 1-1-phenyl-1-hydroxy-2-propanone, which comprises converting 1-1-phenyl-1-hydroxy-2-propanone to 1-1-phenyl-1-hydroxy-2-propanone oxime and reducing the oxime with a ca... | 08/19/2008 |
| 7368609 | Optically active 1-(fluoro-, trifluoromethyl- or trifluoromethoxy- substituted phenyl)alkylamine N-monoalkyl derivatives and process for producing same An optically active 1-(fluoro-, trifluoromethyl- or trifluoromethoxy-substituted phenyl)alkylamine N-monoalkyl derivative represented by the formula 4 is produced by a process including (a) reacting an optically active secondary amine, represented by the formula 1, ... | 05/06/2008 |
| 7309497 | Injectable pharmaceutical composition for systematic administration of pharmacologically active ingredients The invention relates to novel pharmaceutical compositions for the systemic administration of pharmacologically active ingredients. The invention relates in particular to an injectable pharmaceutical composition comprising (a) a pharmacologically active ingredient i... | 12/18/2007 |
| 7294744 | Process for manufacturing of enantiomerically pure 3-hydroxy-3-phenyl-propylamin The present invention relates to an improved process for preparing enantiomerically pure 3-hydroxy-3-phenyl-propylamines on an industrial scale using asymmetrical hydrogenation as a key step and optionally a special sequence of subsequent steps, using a catalyst sys... | 11/13/2007 |
| 7247750 | Process for preparing (R)-salbutamol Disclosed are processes for preparing levosalbutamol or the pharmacologically acceptable salts thereof on an industrial scale, using asymmetric hydrogenation as the key step and optionally a special sequence of subsequent steps, using rhodium as catalyst and a chira... | 07/24/2007 |
| 7186865 | Optically active 1-(fluoro-, trifluoromethyl-or trifluoromethoxy-substituted phenyl) alkylamine n-monoalkyl derivatives and process for producing same An optically active 1-(fluoro-, trifluoromethyl- or trifluoromethoxy-substituted phenyl)alkylamine N-monoalkyl derivative represented by the formula 4 is produced by a process including (a) reacting an optically active secondary amine, represented by the formula 1, ... | 03/06/2007 |
| 7119212 | Process for the preparation of tolterodine and intermediates thereof A process for the preparation of 6-methyl-4-(R)-phenyl-chroman-2-one and 6-methyl-4-(S)-phenyl-chroman-2-one, intermediates for the synthesis of tolterodine and its (S) enantiomer, by reaction of 6-methyl-coumarin with phenylboronic acids, esters and derivatives the... | 10/10/2006 |
| 7049469 | Process for preparing (R)-salbutamol The present invention relates to an improved process for preparing levosalbutamol or the pharmacologically acceptable salts thereof on an industrial scale, using asymmetric hydrogenation as the key step and optionally a special sequence of subsequent steps, using rh... | 05/23/2006 |
| 7030276 | Process for preparing 2-[(dimethylamino)-methyl]-1-(3-methoxyphenyl)cyclohexanol A process for preparing 2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)cyclohexanol with high stereoselectivity and high yield by reacting 2-[(dimethylamino)methyl]-cyclohexanone in a Grignard reaction with a Grignard compound of 3-bromoanisole in a suitable solvent a... | 04/18/2006 |
| 6995286 | Process for preparing isomers of salbutamol A process for making optically pure (R) and (S) salbutamol comprises obtaining the (R) or (S) isomer of either salbutamol or a salbutamol precursor in substantially optically pure form by resolving a racemic or optically impure mixture of enantiomers of salbutamol o... | 02/07/2006 |
| 6989465 | S-(−)-1-{4-[2-(allyloxy)-ethyl]phenoxy}-3-isopropylamino propan-2-ol, process for preparation thereof and process for preparation of S-(−)betaxolo The present invention relates to a novel compound S-(−)-1-{4-[2-(allyloxy)-ethyl] phenoxy}-3-isopropylamino propan-2-ol of formula 1 and to a process for the preparation thereof. More particularly the present invention relates to a process for preparing S-(−)-1-... | 01/24/2006 |
| 6982350 | Process for the synthesis of (1S)-4,5-dimethoxy-1-(methylaminomethyl)-benzocyclobutane and addition salts thereof, and to the application thereof in the synthesis of ivabradine and addition salts thereof with a pharmaceutically acceptable acid Process for the synthesis of the compound of formula (I): Application in the synthesis of ivabradine, addition salts thereof with a pharmaceutically acceptable acid, and hydrates thereof. ... | 01/03/2006 |
| 6974839 | Method of delaying ejaculation The invention provides a method of delaying ejaculation. The method comprises administering an effective amount of a tramadol material to a human male prior to sexual intercourse. The method is particularly useful for treating premature ejaculation. ... | 12/13/2005 |
| 6878848 | Process for converting a cis-trans mixture of substituted benzylidene amines into the pure cis isomer A process for interconverting a mixture of cis-trans isomers of a compound of formula I into the substantially pure cis isomer. Cis isomers of formula I are useful intermediates in the synthesis of cis isomers of benzami... | 04/12/2005 |
| 6821998 | Arylamines as inhibitors of chemokine binding to US28 Methods for treating CMV and CMV-related diseases are provided that use compounds having the formula: wherein the subscripts m and n are each independently integers from 1 to 2; and the R group... | 11/23/2004 |
| 6809221 | Process for preparing (+)-cis-sertraline The present invention is directed to (+)-cis-sertraline hydrochloride and methods of preparation. The present invention also includes processes for making sertraline having a cis/trans ratio greater than 3:1, greater than or equal to 8:1, or between about 8:1 and ab... | 10/26/2004 |
| 6806386 | Process for the preparation of ketimines The present invention relates to a process for the preparation of compounds of formula (1), in which R1, R2 and R3 independently of one another are hydrogen, halogen , trifluoromethyl of or C1-C4alkoxy, wherein ... | 10/19/2004 |
| 6570036 | Co-crystallization process A process for isolating one or more enantiomer components from a mixture of enantiomers through co-crystallization is disclosed.... | 05/27/2003 |
| 6552227 | Process for preparing (+)-cis-sertraline The present invention is directed to (+)-cis-sertraline hydrochloride and methods of preparation. The present invention also includes processes for making sertraline having a cis/trans ratio greater than 3:1, greater than or equal to 8:1, or between about... | 04/22/2003 |
| 6506940 | Process for converting stereoisomers of sertraline into sertraline A process for converting the cis (1R, 4R), trans (1S, 4R), and trans (1R, 4S) stereoisomers of sertraline into sertraline comprises, starting with an initial reaction mixture which contains at least one of these stereoisomers, converting the sertraline st... | 01/14/2003 |
| 6469213 | Tramadol, salts thereof and process for their preparation Cis-Tramadol hydrochloride is prepared by forming a Mannich hydrochloride, liberating the Mannich base, reacting the Mannich base with a Grignard reagent to form a base hydrate of cis-Tramadol which is used to form pure cis-Tramadol hydrochloride. Also cl... | 10/22/2002 |
| 6458955 | Process for preparation of pharmaceutically desired enantiomers Improved processes for preparation of high enantiomeric purity compounds center on resolution using simulated moving bed chromatography of a racemic precursor early in the synthesis. Resolution is effected with high enantiomeric purity, and subsequent rea... | 10/01/2002 |
| 6455736 | Process for preparation of pharmaceutically desired sertraline and sertraline analogs Improved processes for preparation of sertraline or sertraline analogs in high enantiomeric purity centers on resolution using simulated moving bed chromatography of isomeric racemic sertraline or sertraline analogs. Resolution is effected with high enant... | 09/24/2002 |
| 6399829 | Synthesis and purification of (r*,r*)-2-[ (dimethylamino) methyl]-1-(3-methoxyphenyl) cyclohexanol hydrochloride (R*,R*)-2-[(dimethylamino)methyl]-1-(3-methoxyphenyl)cyclohexanol (Tramadol) is synthesized in a Grignard reaction in the presence of an additive resulting in a higher trans:cis ratio of product than is obtained in the absence of the additive. The Grignar... | 06/04/2002 |
| 6399826 | Salts of sibutramine metabolites, methods of making sibutramine metabolites and intermediates useful in the same, and methods of treating pain Methods of making and using racemic and optically pure metabolites of sibutramine, and pharmaceutically acceptable salts, solvates, and clathrates thereof, are disclosed. Pharmaceutical compositions and dosage forms are also disclosed which comprise a dop... | 06/04/2002 |
| 6310248 | Process and intermediates The invention relates to a process for the enantioselective preparation of tolterodine and analogues and salts thereof comprises the steps of: a) enantioselectively reducing the carbonyl function in a compound of formula (II): ##STR1## wherein R1 | 10/30/2001 |
| 6265614 | Optically active intermediates for the preparation of optically active substituted oximes, hydrazones and olefins useful as neurokinin antagonists Intermediates having the formula ##STR1## wherein BI is --CH2 OH or --CH2 ORP, and RP is an alcohol protecting group; a is 1, 2, or 3; ##STR2## TI is --OH or QI is phenyl, naphth... | 07/24/2001 |
| 6235927 | Process for the separation of a mixture of enantiomers A diastereomer complex obtained via a process for the separation of enantiomers is disclosed, wherein separation can be rapidly effected such that enantiomers are obtained with high e.e. values. The process pets the separation of mixtures of enantiomers i... | 05/22/2001 |
| 6225463 | Synthesis of new ଲ-lactams The object of the present invention is the development of new chiral auxiliaries for improved ଲ-lactam formation that control both the diastereoselectivity of ଲ-lactam formation and which can be removed without destruction of the sensitive aze... | 05/01/2001 |
| 6222072 | Process for producing optically active amine A novel process for producing an optically active amine is provided. The optically active amine is adapted for use as an intermediate in synthesizing physiologically active compounds such as pharmaceuticals and agricultural chemicals, as a functional mate... | 04/24/2001 |
| 6218575 | Process for preparing adrenaline An improved process for preparing adrenaline, or an addition salt thereof, on an industrial scale, with asymmetric hydrogenation as a key step and a special sequence of successive steps, using [Rh(COD)Cl]2 as catalyst and a chiral, bidentate ph... | 04/17/2001 |
| 6184381 | Process for preparing optically active compounds This document describes a novel and practically excellent process for the preparation of optically active compounds, such as optically active alcohols or amines which are useful for various applications, for example, as synthetic intermediates of pharmace... | 02/06/2001 |
| 6162949 | Process for preparation of the pharmaceutically desired (S)-oxetine enantiomers Improved processes for preparation of the (S)-oxetines in high enantiomeric purity centers on resolution using simulated moving bed chromatography of a racemic precursor early in the oxetine synthesis. Resolution is effected with high enantiomeric purity,... | 12/19/2000 |
| 6118025 | Method for preparing optically active -substituted benzyl alcohols The invention concerns a method for preparing an optically active alcohol of formula (I) in which the carbon atom indicated by the symbol * can have the configuration (R) or (S) and X represents a non-substituted amino group or a mono- or di-(C1 | 09/12/2000 |
| 6040479 | Racemic separation of ketamine The present invention is concerned with an improved process for the resolution of racemic 2-(o-chlorophenyl)-2-methylaminocyclohexanone (ketamine).... | 03/21/2000 |
| 6034278 | Method for producing optically active 1-phenylethylamines The invention concerns a new method for producing optically active 1-phenylethylamines, wherein (a) racemic 1-phenylethylamines are reacted with (S)-(-)-N-phenylcarbamate lactic acid in the presence of an aliphatic or aromatic hydrocarbon and in the prese... | 03/07/2000 |
| 5962737 | 2-amino-1-phenylpropanols, stereospecific synthesis thereof, and method of optically resolving the same Stereospecific synthesis of the racemic threo isomers of 2-nitro-1-phenylpropanols by reacting a benzaldehyde derivative with nitroalkane in the presence of a tertiary amine and reducing 2-nitro-1-phenylpropanols with, for example, lithium aluminum hydrid... | 10/05/1999 |
