Patents for B01D 11 - Solvent extraction (12,717)
03/1994
03/01/1994US5290578 Process for preparing low-calorie nuts
02/1994
02/24/1994DE4235026A1 Device for prodn. of extracts of vegetable substances, esp. tea-leaves - comprises dry substance container located within solvent container, where solvent flows by gravity through dry substance container to common outlet
02/23/1994EP0583653A1 Cleaning by cavitation in liquefied gas
02/22/1994US5287632 Exposing solid article to inert phase of fluid or gas; transferring residual solvent; removing inert phase
02/16/1994EP0583200A1 Process for continuous extraction with a solvent combined with ultrasonic treatment and a column adapted for carrying out this process
02/15/1994US5286386 Solvent extraction process for treatment of oily substrates
02/11/1994EP0649560A4 Process for selectively concentrating the radioactivity of thorium containing magnesium slag.
02/11/1994CA2101142A1 Cleaning by cavitation in liquefied gas
02/08/1994US5284633 Solvent extraction of precious metals with hydroxyquinoline and stripping with acidified thiourea
02/02/1994EP0581467A1 Stable extracts from neem seeds
02/02/1994EP0580780A1 Inorganic perbromide compositions and methods of use thereof
02/02/1994EP0343233B1 Supercritical fluid reverse micelle separation
01/1994
01/28/1994CA2100536A1 Stable extracts from neem seeds
01/25/1994US5281732 Solvent extraction of oil from oil-bearing materials
01/25/1994US5281479 Carbon fiber reinforced carbon, packing for distillation columns
01/25/1994US5280660 Electronic balancing system for washing machine
01/20/1994WO1994001190A1 Recovery of metal values from process residues
01/20/1994CA2139642A1 Recovery of metal values from process residues
01/18/1994US5279747 Reducing particle size, dehydration, drying, agitating and firing metal in presence of a stabilizer
01/18/1994US5279743 Separation of solid phase manganese dioxide from liquid phase chloric acid solution
01/12/1994EP0577983A2 Method for forming PTFE membrane/gasket assembly
01/12/1994EP0577607A1 An active liquid distributor containing packed column.
01/11/1994US5278282 Separating polymers from solid mixture of at least three polymers including at least two different polymers which are members of polyethylene family by varying solvent temperature to dissolve different polymers
01/11/1994US5277910 Process for the preparation of a pharmaceutical composition selectively lowering the blood-lipid level
01/11/1994US5277821 Analytical apparatus
01/11/1994US5277817 Purification
01/11/1994CA2093740A1 Method for forming ptfe membrane/gasket assembly
01/06/1994WO1994000541A1 Extraction of oils from grain materials and grain-based food products
01/05/1994EP0577372A1 Recovery of hydrogen peroxide
01/05/1994CN1080203A Process and equipment for the extraction of solid granular and/or crushed materials with a liquid and for pretreatment thereof to further extraction
01/05/1994CN1023378C Apparatus to contact liqluid of different density
01/04/1994US5275954 Process for demineralization of bone using column extraction
12/1993
12/29/1993EP0575387A1 Extraction system.
12/28/1993US5274129 Hydroxamic acid crown ethers
12/28/1993US5273659 Process of recovering a solid component from a solid composition by clarification and extraction
12/23/1993WO1993025293A1 Apparatus and method for reversed permeation membrane extraction of compounds from sample solutions
12/23/1993WO1993022650A3 Device for evaporating preferably liquid substances, in particular reagents, or for preparing or analyzing sampled materials
12/23/1993CA2136011A1 Apparatus and method for reversed permeation membrane extraction of compounds from sample solutions
12/22/1993EP0574717A2 Liquid-liquid extraction across ion-exchange membranes
12/21/1993US5271903 Supercritical fluid extraction restrictor and collection system
12/21/1993US5271840 Method for separating hydrophilic molecules from hydrophobic molecules via detergent partitioning
12/21/1993CA1325433C Process for the extraction of lactones from lipid material and use of the extract thus obtained for flavouring foodstuffs
12/16/1993DE4224953C1 Treatment of industrial sludges contaminated with oil - in which oil is extracted in closed system using light hydrocarbon(s) as solvent and sludge is stripped using satd. steam
12/15/1993CA2077380A1 Modulator mixer - settler of the type having separate stages and mechanical stirring
12/14/1993US5269930 Apparatus and method for supercritical fluid extraction
12/08/1993EP0573182A1 Process for extracting metal values
12/08/1993EP0572913A1 Continuous operation supercritical fluid treatment process and system.
12/07/1993US5268150 Conveying solvent through membraneto distillation column
12/07/1993US5268103 Apparatus and method for supercritical fluid extraction
12/07/1993US5268102 Apparatus and method for supercritical fluid extraction
12/07/1993US5267936 Multi-stage centrifugal extractors for separating liquids of differing densities wherein recycling of portions of the separated liquids occurs at each stage
12/07/1993CA1324880C Apparatus and process for liquid-liquid contact
12/06/1993CA2097158A1 Chemical process
12/02/1993CA2096462A1 Continuous operation supercritical fluid treatment process and system
12/01/1993CN1078881A Hair growth promoting agent process for producing and apparatus
11/1993
11/30/1993US5266282 Selective liquid/liquid extraction of yttrium from other rare earths values
11/30/1993US5266205 Supercritical fluid reverse micelle separation
11/30/1993CA1324831C Instrument for the measurement and determination of chemical pulse column parameters
11/25/1993WO1993023150A1 Liquid extraction of aqueous solutions
11/23/1993US5264649 Alkylation catalyst regeneration
11/23/1993US5264236 Wet carbon dioxide extraction of hops
11/23/1993US5264212 Natural red coloring matter and its processing method
11/18/1993EP0570306A1 Apparatus for extracting, concentrating and separating biochemical products from vegetable or animal biological substances
11/18/1993EP0551352A4 Supercritical fluid extraction restrictor and collection system
11/18/1993EP0382756B1 Method for solids separation by wet oxidation at supercritical temperature
11/18/1993DE4216295A1 Cylinder for quasi-continuous technical-chemical production of solid and paste products - is subdivided into multiple chambers by single piston
11/16/1993US5262027 Electric pulsation, dispersion and coalescing
11/11/1993WO1993022650A2 Device for evaporating preferably liquid substances, in particular reagents, or for preparing or analyzing sampled materials
11/11/1993WO1993022036A1 Membrane extraction process
11/03/1993EP0568131A2 Universal zero-headspace extractor vessel and rotator
11/02/1993US5258524 Bis-bibenzimidazole composition
11/02/1993US5258057 Method and apparatus for extracting dissolved, volatile substances from liquids into the vapor phase
10/1993
10/27/1993EP0567165A1 Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids
10/26/1993US5256416 Extracts of the Acanthospermum hispidum plant
10/26/1993US5256383 Process for the separation of actinides from lanthanides by the selective extraction of the actinides in an organic solvent incorporating a propane diamide
10/26/1993US5256270 Electrostatic separating apparatus
10/26/1993US5256251 Process for drying and solvent-extraction of solids and sludges
10/26/1993CA1323501C Process for the removal of organic contaminants from solids
10/20/1993EP0565873A1 Device for compressing and washing of polluted solid matter, especially in purification plants
10/20/1993EP0341280B1 Process for removing hazardous substances from water or air
10/19/1993US5255205 Method and apparatus for regulating fluid flow
10/19/1993US5254256 Removal and isolation of paint solids from overspray
10/19/1993US5254244 Modular mixer-settler having separate stages manipulatable by telemanipulator
10/19/1993US5254076 Centrifugal pyrocontactor
10/19/1993US5254075 Internal circulation type centrifugal extractor
10/19/1993CA1323200C Rare earth separation process
10/13/1993CN1077137A Single-stage cylindrical centrifugal extractor
10/12/1993US5252729 Extraction of compounds from plant materials using supercritical fluids
10/12/1993US5252220 Preparation of analytical samples by liquid-liquid extraction using microporous hollow-fiber membranes
10/10/1993CA2088751A1 Hair growth promoting agent, process for producing and apparatus
10/06/1993EP0552301A4 On-line supercritical fluid extraction multidimensional chromatographic system
10/05/1993US5250271 Apparatus to concentrate and purify alcohol
10/05/1993US5250195 For computer controlled high pressure treatment of samples before measurement of radioactivity
10/05/1993CA1322795C Process for extracting organic composites and solutions and aqueous suspensions thereof
09/1993
09/29/1993EP0562709A2 Process for stripping metals from organic complexes
09/29/1993EP0561955A1 A method of continuously decontaminating a material, and an assembly for carrying out the method.
09/22/1993EP0561760A1 Extracting organic compounds from aqueous solutions
09/22/1993EP0560877A1 Method and apparatus to detoxify aqueous based hazardous waste
09/21/1993CA2063694A1 Ammonia extraction of gold and silver from ores and other materials
09/16/1993DE4207370A1 Removal of plant protectants from plastic esp. polyethylene@ containers - by extn. of plant protectant by contacting container with material which diffuses into plastic and dissolves protectant, etc.