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WO/2003/028665A2 |
Levofloxacin has been purified by dissolving levofloxacin in a polar solvent at an elevated temperature and crystallizing purified levofloxacin. Preferably, an antioxidant is added to increase the purity.
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WO/2003/026659A1 |
The present invention provides low hygroscopic forms of aripiprazole and processes for the preparation thereof which will not convert to a hydrate or lose their original solubility even when a medicinal preparation containing the aripipr...
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WO2002014286A9 |
The present invention is directed to the novel forms of risperidone, designated Form A, Form B and Form E. Methods for their preparation are also disclosed. The present invention also relates to processes for making risperidone. Pharmace...
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WO/2003/024562A1 |
The invention is directed to a hydraulic annular washing column for continuously separating solids from a suspension comprising: a hollow cylindrical column having a central axis therethrough, said column having an interior with a cross-...
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WO/2003/022544A2 |
The invention relates to a device (1) for continuous heat treatment of granulated materials, especially to the crystallization of polymer granulate, such as polyethylenterephthalate (PET) for example. The device comprises several adjacen...
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WO/2003/016576A1 |
A continuous pan crystalliser for use in the sugar industry includes a heated zone in the form of a steam chamber (32) below a calandria (22). The heated zone minimizes cooling of massecuite in the area below the calandria in the pan and...
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WO/2003/014084A1 |
The invention describes novel lercanidipine crude Forms (A) and (B), novel lercanidipine hydrochloride crystalline Forms (I) and (II) obtained form said crude Forms, pharmaceutical, antihypertensive compositions containing as active agen...
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WO/2003/013683A1 |
The invention involves methods and products related to the micronization of hydrophobic drugs. A method of micronizing hydrophobic drugs using a set of solutions including an aqueous solution is provided. The invention also relates to pr...
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WO/2003/004500A1 |
Provided are cucurbituril derivatives having the formula (1), their preparation methods and uses: where X is O, S or NH; R¿1? and R¿2? are each independently selected from the group consisting of hydrogen, alkyl groups of 1 to 30 carbo...
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WO/2003/002225A1 |
This invention relates to a method of preparing nanoparticle coated crystals comprising the steps of providing a mixture comprising nanoparticles and a solution of a crystal forming material; and coprecipitating the nanoparticles and the...
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WO/2002/102777A2 |
The present invention is related to novel polymorph of Fexofenadine and Fexofenadine hydrochloride of formula 1 and process of preparation thereof. The present invention is also directed to provide pure novel polymorphs of Fexofenadine a...
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WO/2002/103038A1 |
The invention relates to an enzymatic method of producing 4-0-$g(b)-D-galactopyranosyl-D-xylose which is used for the in vivo evaluation of intestinal lactase activity in humans. The inventive method consists in: a) reacting D-xilose wit...
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WO/2002/100932A1 |
A method for obtaining LDPE from used plastic films, comprising the following steps: low-molecular components are extracted from the film material which is dissolved in a second organic solvent; the film material thus treated is dissolve...
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WO/2002/098836A1 |
Disclosed is a process for the production of terephthalic acid by a plurality of process steps including the catalyst oxidation of a dialkylbenzene compound, a second oxidation, a hydrogenation of the product of the second oxidation, and...
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WO/2002/098835A1 |
Disclosed is a method for the recovery of crystalline therephthalic acid containing less than 150 ppmw p-toluic acid by subjecting a solution of therephthalic acid containing minor amounts of p-toluic acid to crystallization in a crystal...
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WO/2002/096532A1 |
A trigger mechanism used for initiating a phase change in a variable liquid element by an activating material. The trigger mechanism also relates to a variable liquid element enclosed in a container with at least one perforation in the c...
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WO/2002/089942A1 |
Small crystals are made by mixing a solution of a desired substance with an anti-solvent in a fluidic vortex mixer in which the residence time is less than 1 s, for example 10 ms. The liquid within the fluidic vortex mixer (12) is subjec...
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WO/2002/089944A1 |
High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete oxidation of the sulfide minerals while opt...
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WO/2002/085329A1 |
The invention relates to a method for the continuous production of medicaments for inhalation, a device for carrying out said method and a medicament produced by said method. The aim of the invention is a method which guarantees that the...
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WO/2002/083938A2 |
This invention relates to crystallization based assays for identifying ligands that bind to a macromolecule.
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WO2001072315A9 |
The invention relates to a method for obtaining triterpenes from plants and/or the constituents thereof, in addition to an emulsion whose aqueous and fatty phase is emulsified by the plant extract. The plant extract contains at least one...
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WO/2002/083568A1 |
A method for producing high purity potassium fluorotantalate crystals or high purity potassium fluoroniobate crystals, characterized in that a recrystallization process comprises the first step of cooling a saturated solution from a diss...
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WO/2002/078863A1 |
A method and device for generating pharmaceutical agent particles using focused acoustic energy are provided. A solution of the pharmaceutical agent is provided in a solvent, which may be an aqueous fluid, a nonaqueous fluid, or a superc...
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WO/2002/077085A1 |
A method of recovering polyvinyl chloride from a waste comprising polyvinyl chloride which comprises: the step of removing the insoluble solid matter from a heated mixture of the waste and a solvent in which polyvinyl chloride is soluble...
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WO2001024921A9 |
A gallium nitride growth process forms crystalline gallium nitride. The process comprises the steps of providing a source gallium nitride (15); providing mineralizer (17); providing solvent (17); providing a capsule (10); disposing the s...
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WO/2002/068107A2 |
An apparatus is described for micron and submicron particles formation of a substance using the GAS process, comprising a particles formation vessel (22) and means for introducing a solution of the substance and a supercritical fluid int...
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WO/2002/064597A2 |
The invention relates to a method for purifying 20(S) camptothecin by transforming the lactone ring of the 20(S) camptothecin into a carboxylate salt with the help of an aqueous base, hydrogenating the mixture that is obtained in the pre...
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WO/2002/062705A2 |
A system and method for producing salts using a crystallizer with an integrated column is disclosed. In the column, liquid, containing one reactant, absorbs a second reactant, from the gas stream. The second reactant reacts with the firs...
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WO/2002/055529A2 |
A method for recovering soy saponis which comprises extracting a soy isoflavone concentrate derived from soy molasses with a mixture of acetone and water, removing undissolved solids from the extract, cooling the extract such that soy sa...
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WO/2002/055177A1 |
The invention concerns a draining tank (10) for a granular material/liquid mixture comprising a low part (12) and a high part (16) provided with a lid (18). A device for separating (28) the liquid and the granular material is arranged in...
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WO/2002/050319A1 |
This invention relates to a method where sulfidic iron-bearing copper concentrate is leached on the countercurrent principle, in a chloride environment. The leaching takes place with the aid of bivalent copper and an oxygen-bearing gas a...
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WO/2002/048245A1 |
The invention relates to a method for separating at least one selected polymer from a mixture of polymers, comprising the following steps: (a) dissolving the mixture of polymers in a first solvent, with the concentration of the polymer m...
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WO/2002/048046A2 |
A process for the recovery of arsenic trioxide from acid solutions, particularly the aqueous acid effluent produced by a gas-washing process in the pyrometallurgy of copper sulfide ores is provided. Generally, the process comprises conce...
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WO/2002/043732A1 |
The present invention provides novel forms of atorvastatin designated Forms VI, VIII, IX, X, XI and XII and novel processes for their preparation as well as processes for preparing atorvastatin Forms, I, II, IV, V and amorphous atorvasta...
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WO/2002/044123A1 |
A conversion process of gabapentin hydrochloride into gabapentin comprising: a) dissolution of gabapentin hydrochloride in a solvent in which the gabapentin hydrochloride and the gabapentin are completely soluble; and b) subsequent addit...
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WO/2002/044083A1 |
The invention relates to a process for the continuous preparation of very highly concentrated hydrogen peroxide having a content of greater than 80 wt.%, especially over 98 wt.%, by suspension crystallisation and after-treatment of the H...
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WO/2002/036668A1 |
The invention relates to a method for recovering nylon from a nylon-containing material by contacting the nylon-containing material with an alkanol-containing solvent at elevated temperature and at a pressure higher than the equilibrium ...
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WO/2002/036487A1 |
The invention is directed towards a process for the concentration of aqueous hydrogen peroxide, comprising discontinuous crystallisation. According to the invention, a cooling surface arranged in a crystallising vessel and first wetted w...
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WO/2002/028498A1 |
A method for crystallization which comprises sending a solution or a slurry formed by partial precipitation of a solute to a crystallization tank, precipitating the solute in the crystallization tank to yield a slurry comprising crystals...
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WO/2002/028499A1 |
A method of crystallization which comprises feeding to a crystallization vessel either a solution of terephthalic acid or a slurry solution in which part of terephthalic acid has been precipitated, crystallizing the terephthalic acid in ...
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WO/2002/027039A1 |
The present invention relates to a method for recovering a monosaccharide selected from the group consisting of rhamnose, arabinose, xylose and mixtures thereof from a solution containing the same by a multistep process using chromatogra...
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WO/2002/026374A1 |
A heat transfer device, comprising a mixing tank, a fluid circulating means for circulating fluid along the tank wall of the mixing tank, and at least one auxiliary heat transfer means installed in the mixing tank, wherein the auxiliary ...
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WO/2002/016003A1 |
The method involves: a) dissolving a compound (C) in a fluid (A) to obtain a solution (A); b) thermostatizing said solution (A) at a temperature ranging between -50° C and 200° C; c) adding a fluid (B) to said solution (A) until pressu...
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WO/2002/011851A2 |
An installation for continuous crystallization of liquids by freezing to form a bubble slurry with crystal nuclei, gas bubbles and concentrated unfrozen liquid. The installation includes a pumpless refrigeration circuit with a compressor...
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WO/2002/009839A1 |
The invention relates to the use of an optical line detector for regulating the position of the wash front and/or the structural front pertaining to the crystal bed of a wash column during a melt cristallisation process, as well as a cor...
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WO/2002/005921A1 |
The present invention relates to a process for the crystallisation of a solid phase from a liquid, characterised in that the liquid during crystallisation is subjected to ultrasound in the absence of transient cavitation. In particular t...
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WO/2002/005973A2 |
A method of inducing solidification in a fluid composition comprising a cosmetic active, a crystalline organic structurant and a carrier, comprising exposing the fluid composition to ultrasound or converting the composition to a soft sol...
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WO/2002/000198A1 |
The present invention relates to a novel process for preparing and harvesting crystalline particles, particularly particles of therapeutically useful or carrier substances of a size suitable for inhalation therapy.
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WO/2002/000200A1 |
The present invention relates to a novel process for preparing crystalline particles of a salt of a substance, particularly particles of therapeutically useful or carrier substances of a size suitable for inhalation therapy.
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WO/2002/000199A1 |
The present invention relates to a novel process for preparing and harvesting crystalline particles, particularly particles of therapeutically useful or carrier substances of a size suitable for inhalation therapy.
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