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| Number | Title | Issue Date |
| 8110706 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 02/07/2012 |
| 7964753 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 06/21/2011 |
| 7732641 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 06/08/2010 |
| 7479572 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 01/20/2009 |
| 7371890 | Method for the continuous production of a compound that carries at least two functional groups A process for continuously preparing a compound which bears at least two functional groups which are each independently selected from the group consisting of nitrile group, carboxylic acid group, carboxylic ester group and carboxamide group. ... | 05/13/2008 |
| 7342132 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 03/11/2008 |
| 7145036 | Formoterol tartrate polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 12/05/2006 |
| 7002041 | Stabilized amide composition An amide composition containing an unsaturated amide, a sulfur-containing compound, and a weak acid salt. The composition can include an amide in crystalline form or the composition can be in form of aqueous solution. The composition can exhibit improved stability w... | 02/21/2006 |
| 6946060 | Purification of N,N-dimethylacetamide A method to purify N,N-dimethylacetamide (DMAc) from an aqueous solution containing acetic acid as a contaminant. Two fractional distillation columns are arranged in a series. The solution containing the contaminant is provided to the first column with a temperature... | 09/20/2005 |
| 6818792 | Preparation of polymerizable compounds Polymerizable compounds are prepared and/or worked up using at least one liquid ring pump by a process in which a working liquid which contains a material stream from the preparation and/or working-up of the polymerizable compound is used in a liquid ring pump. ... | 11/16/2004 |
| 6723877 | Dimethylformamide synthesis via reactive distillation of methyl formate and dimethylamine A continuous process for the production of dimethylformamide comprising the steps: (a) reacting methyl formate and dimethylamine in a reactive distillation column under conditions to form dimethylformamide and by-product methanol; (b) vaporizing the by... | 04/20/2004 |
| 6720453 | Formoterol tartrate polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph. ... | 04/13/2004 |
| 6537524 | Combinations of formoterol and a tiotropium salt A medicament containing, separately or together, (A) formoterol or a pharmaceutically acceptable salt thereof or a solvate of formoterol or said salt and (B) a tiotropium salt of a pharmaceutically acceptable acid, for simultaneous, sequential or separate... | 03/25/2003 |
| 6489474 | Process for producing amide compound Object of the present invention is to provide a process for producing an amide compound with high efficiency by subjecting an oxime compound to Beckmann rearrangement in a liquid phase under mild reaction conditions. Namely, the invention relates to a pro... | 12/03/2002 |
| 6472563 | Formoterol tartrate process and polymorph A method of preparation of a highly pure salt of R,R-formoterol L-tartrate is disclosed. The process provides the most thermodynamically stable polymorph by recrystallization of a novel polymorph.... | 10/29/2002 |
| 6465692 | Reagents for preparing a sample containing biomolecular analytes for capillary electrophoretic separation and methods for making the reagents Formamide with low conductivity and a neutral or slightly basic pH is provided. Such formamide may be used in a sample loading solution for capillary electrophoretic separation of biomolecular analytes to enhance the efficiency of sample injection into th... | 10/15/2002 |
| 6455715 | Method of producing dicarboxylic acids suitable for synthesis of polymers or polyamides A method is described for producing saturated dicarboxylic acids with a chain length of C6 to C21 or the corresponding diamidic dicarboxylic acids from fatty acid cleavage of unsaturated fatty acids or the bis-fatty acid diamides of these unsaturated fatt... | 09/24/2002 |
| 6441234 | Production of formamide using sodium diformylamide In the process for preparing formamide by reaction of ammonia and carbon monoxide in the presence of at least one catalyst, sodium diformylamide is used as catalyst. If sodium methoxide is used as further active component, sodium diformylamide can be form... | 08/27/2002 |
| 6417399 | Amelioration of neurological disorders by the administration of (2R),(3S), and/or (2S),3(S) stereoisomers of valnoctamide The present invention generally relates to the individual stereoisomers of the drug valnoctamide (a mixture of four stereoisomer kinds, VCD-valmethamide or 2-ethyl-3-methyl pentanamide) useful in treatment of neurological and psychotic disorders such as d... | 07/09/2002 |
| 6268533 | Formoterol process A method is disclosed for the preparation of optically pure isomers of formoterol by the reaction of an optically pure 4-benzyloxy-3-formamidostyrene oxide with an optically pure 4-methoxy--methyl-N-(phenylmethyl)benzeneethanamine followed by ... | 07/31/2001 |
| 6252112 | Process for the preparation of an enantiomer of a (1R, 4S) or (1S, 4R)-1-amino-4-(hydroxymethyl)-2-cyclopentene derivative A novel process for the preparation of (1S, 4R)- or (1R, 4S)-4-(2-amino-6-chloro-9H-purin-9-yl)-2 -cyclopentene-1-methanol of the formula ##STR1## is described.... | 06/26/2001 |
| 6072084 | Highly polymerizable N-vinylcarboxylic acid amide and production process thereof A highly polymerizable N-vinylcarboxylic acid amide having an N-1,3-butadienylcarboxylic acid amide content of 30 ppm or less, a process for producing the same, and a process for producing a homopolymer of N-vinylcarboxylic acid amide or a copolymer there... | 06/06/2000 |
| 6033530 | Continuous distillation of thermolabile monomers A process for the continuous distillation of thermolabile monomers under reduced pressure in a column includes feeding the thermolabile monomers in vapor or liquid form to the column, introducing an inert distillation aid which forms a heteroazeotrope with the... | 03/07/2000 |
| 5981799 | Method for the purification of acetaminophen A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a hot aqueous solution of the crude APAP; and b) subsequently contacting the hot solution with an ac... | 11/09/1999 |
| 5951828 | Continuous distillation of thermolabile monomers In a process for the continuous distillation of thermolabile monomers under reduced pressure in the presence of formamide in a column, the thermolabile monomers are continuously fed in liquid form, separately from formamide, into the lower part of the column u... | 09/14/1999 |
| 5856575 | Process for the preparation of N-acetyl aminophenols This invention provides a process for the manufacture of N-acetyl amino phenol, which process comprises reacting an appropriate phenol and an amide in the presence of a heteropoly acid or its alkali metal salt catalyst.... | 01/05/1999 |
| 5684199 | Process for the preparation of an optically pure enantiomer of formoterol The present invention is directed to a process for preparing formoterol and related compounds and derivatives thereof and their pharmacologically and pharmaceutically acceptable fumarate salts and/or solvates. The present invention is also directed to cer... | 11/04/1997 |
| 5599986 | Process for the preparation of alkali metal salts of diformylamide The present invention relates to a novel process for preparing alkali metal salts of diformylamide and a novel crystalline form of sodium diformylamide.... | 02/04/1997 |
| 5504239 | Process for separating off alkanols from other organic compounds of higher carbon number A first alkanol having from 1 to 3 carbon atoms can be separated off from other organic compounds of higher carbon number from the group comprising other alcohols, polyalcohols, ethers, oxo compounds, esters of carboxylic acids and of carbonic acid, haloa... | 04/02/1996 |
| 5399760 | Color control & stability in acetaminophen A method is provided for purifying crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a solution of the crude APAP; and b) subsequently contacting the solution with substoichiometric quant... | 03/21/1995 |
| 5344979 | Process for preparing color-stabilized acetaminophen A method is provided for purifying a crude N-acetyl-para-aminophenol (APAP) containing color bodies or their precursors, the method comprising: a) forming a wet crude APAP; and b) subsequently drying said crude APAP in the presence of a sufficient amount ... | 09/06/1994 |
| 5254684 | Process for producing amide by liquid phase rearrangement of oxime A process for producing an amide which comprises subjecting an oxime to liquid phase rearrangement in the presence of phosphorus pentoxide and at least one compound selected from the group consisting of N,N-dialkyl amides, N-alkyl cyclic amides and dialky... | 10/19/1993 |
| 5225547 | Reaction accelerator for rearrangement of oxime to amide and process for producing amides by rearrangement of oximes A reaction accelerator for rearrangement of an oxime to an amide consisting of an alkylating agent and an N,N-disubstituted formamide or N,N-disubstituted carboxylic acid amide represented by formula (1): ##STR1## wherein R1 and R2 | 07/06/1993 |
| 5221769 | Production of p-acetylaminophenol from p-aminophenyl acetate p-Aminophenyl acetate is isomerized to p-acetylaminophenol in the presence of an acid such as acetic acid or phosphoric acid.... | 06/22/1993 |
| 5155269 | Purification of p-aminophenol compositions and direct conversion to N-acetyl-p-aminophenol A process for removing impurities from an aqueous feed mixture comprising a reaction solution produced by catalytic hydrogenation of nitrobenzene in an acid aqueous medium. An aqueous feed mixture comprising the reaction solution is contacted with an extr... | 10/13/1992 |
| 4996322 | Separation of amides with molecular sieves Amides having different molecular kinetic diameters or heats of adsorption, such as formamide and N-(1-alkoxyethyl)formamide, are separated under mild conditions with a molecular sieve which selectively adsorbs one of the amides, such as formamide. N-viny... | 02/26/1991 |
| 4980031 | Solvent recovery Hydrogen chloride evolution is reduced in the distillation of chloroform from its admixture with an amide solvent when in contact with stainless steel, by incorporation of certain tertiary aliphatic amines.... | 12/25/1990 |
| 4814505 | Purification of n-vinylformamide N-Vinylformamide is purified by fractional distillation in the presence of formamide in a column under from 0.5 to 30 mbar by a method in which the distillation is controlled so that N-vinylformamide containing from 0.1 to 15% by weight of formamide is ob... | 03/21/1989 |
| 4565890 | Process for the preparation of N-acetyl-P-aminophenol An improved process for the preparation of N-acetyl-p-aminophenol. p-Aminophenol is acetylated in an aqueous medium to produce a crude aqueous reaction mixture and N-acetyl-p-aminophenol product is recovered by crystallization from an aqueous system compr... | 01/21/1986 |
| 4540815 | Process for the preparation of pure 3-acetylamino-anilines Process for the preparation of pure 3-acetylaminoanilines of the general formula (1) ##STR1## in which R denotes a hydrogen atom or an alkoxy group with 1-4 carbon atoms, by reduction of 1,3-dinitrobenzene in an alkanol with 1-4 carbon atoms to ... | 09/10/1985 |
