By Passing Through Suspended Bed Patents (Class 210/661)
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Patent number: 7220596Abstract: Antigens can be captured and detected from complex samples, such as food and environmental samples, in about 30 minutes using apparatus and methods that include flow of the samples through a module containing antibodies coupled to beads. The samples flow through the modified beads at about 0.2 to 1.2 liters/minute, which fluidizes the bead bed. The antigens are captured by the antibodies, and then detection of the captured antibodies is carried out with chemiluminescence, fluorescence, or spectrophotometric techniques.Type: GrantFiled: December 11, 2002Date of Patent: May 22, 2007Assignee: Utah State UniversityInventors: Bart C. Weimer, Marie K. Walsh
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Patent number: 7217366Abstract: A process for reducing the content of alkali metal impurities (e.g., potassium) in ammonium metallate solutions is described. The process involves subjecting a feed solution containing ammonium metallate and alkali metal impurities to membrane filtration. The membrane filtration results in the formation of a retentate having a reduced level alkali metal relative to the feed solution, and a permeate containing substantially the balance of alkali metal. The permeate may also be further treated, to remove alkali metal there from, by passage through a cation exchange column, thereby forming a cation exchange treated permeate that may be combined with the retentate of the membrane filtration step.Type: GrantFiled: September 7, 2004Date of Patent: May 15, 2007Assignee: H. C. Starck GmbH & Co. KGInventors: Viktor Stoller, Juliane Meese-Marktscheffel, Armin Olbrich, Michael Erb, Gerhard Gille
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Patent number: 7211605Abstract: An aerogel material with surfaces containing fluorine atoms which exhibits exceptional hydrophobicity, or the ability to repel liquid water. Hydrophobic aerogels are efficient absorbers of solvents from water. Solvents miscible with water are separated from it because the solvents are more volatile than water and they enter the porous aerogel as a vapor across the liquid water/solid interface. Solvents that are immisicble with water are separated from it by selectively wetting the aerogel. The hydrophobic property is achieved by formulating the aerogel using fluorine containing molecules either directly by addition in the sol-gel process, or by treating a standard dried aerogel using the vapor of fluorine containing molecules.Type: GrantFiled: March 4, 2004Date of Patent: May 1, 2007Assignee: The Regents of the University of CaliforniaInventors: Paul R. Coronado, John F. Poco, Lawrence W. Hrubesh
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Patent number: 7198723Abstract: Water is separated from an emulsion of water and oil by passing the emulsion through a bed of superabsorbent polymer granules which break the emulsion and absorb water from the mixture of water and oil. An apparatus for separating water from an emulsion of water and oil has at least one separation cell containing a bed of super absorbent polymer granules.Type: GrantFiled: February 23, 2006Date of Patent: April 3, 2007Assignee: Stockhausen, Inc.Inventors: Todd A. McGarvey, James A. Lilly, Jr.
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Patent number: 7098327Abstract: A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material with dimethyloldihydroxyethylene urea (DMDHEU) and choline chloride, or cationization of the lignocellulosic agricultural material with DMDHEU and choline chloride and then anionization of the lignocellulosic agricultural material with citric acid.Type: GrantFiled: August 19, 2004Date of Patent: August 29, 2006Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Wayne E. Marshall, Lynda H. Wartelle
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Patent number: 7097770Abstract: A solid bed adsorptive process for separating a seed oil into two substantially pure triglyceride fractions. The process involves contacting a seed oil, such as castor oil, preferably as a concentrate, with an adsorbent in a bed, the adsorbent having a particle size greater than about 40 microns, and thereafter contacting the adsorbent with a desorbent material, preferably under minimal flow conditions, to obtain a raffinate output stream containing predominantly a second triglyceride and an extract output stream containing predominantly a first triglyceride. Purified fatty acid triglyceride esters obtainable from castor, vernonia, and lesquerella plant oils provide renewable, non-petroleum-based sources of chemical feedstocks.Type: GrantFiled: March 21, 2002Date of Patent: August 29, 2006Assignee: Dow Global Technologies Inc.Inventors: Zenon Lysenko, Sanjeev Katti, Richard Stringfield, Thomas Gregory, George J. Quarderer, Jr.
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Patent number: 7041222Abstract: A process for the selective removal of toxic heavy metals from a flowing stream of water involves causing the stream to flow through a stationary bed of particulate polymer having amine functional groups, and injecting into the stream, adjacent the upstream extremity of the bed, a substantially continuous flow of carbon disulfide.Type: GrantFiled: June 7, 2004Date of Patent: May 9, 2006Inventor: Norman B. Rainer
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Patent number: 7030248Abstract: Processes for extracting amino acids from mixtures of amino acids, and compositions and mixtures formed therefrom. Applications include isolating natural L-?-3-indolylalanine (L-?-3) and providing natural or other amino acid mixtures enriched with the extracted L-?-3. The source of amino acids may include a natural source, such as enzymatic or other natural protein hydrolysates containing mixtures of free amino acids. The process includes contacting the mixture of amino acids with a resin or hydrophobic substance that is attractive to aromatic amino acids but not attractive to aliphatic amino acids to separate the aromatic amino acids from the rest of the mixture. This contacting may include agitating the mixture and hydrophobic substance to increase contact therebetween. The L-?-3 may then be separated from the monocylic amino acids by contacting the hydrophobic substance with an acid, and L-?-3 may be removed from the hydrophobic substance by contact with a base.Type: GrantFiled: February 14, 2003Date of Patent: April 18, 2006Assignee: AminoPath Labs, LLCInventors: Robert L. Pollack, John C. Godfrey, F. Warren Colvin
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Patent number: 6987183Abstract: The present invention is directed to a method comprising a multistep process for recovering one or more monosaccharides from a solution containing at least two monosaccharides selected from the group consisting of rhamnose, arabinose, xylose and mixtures thereof by using chromatographic separation comprising at least one step, where a weak acid cation exchange resin is used for the chromatographic separation.Type: GrantFiled: September 28, 2001Date of Patent: January 17, 2006Assignee: Danisco Sweeteners OyInventors: Heikki Heikkila, Juho Jumppanen, Ve{grave over (s)}a Kurula, Vili Ravanko, Tiina Tervala, Nina Mayra
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Patent number: 6977046Abstract: The invention relates to a method of distributing a liquid in the fluid bed of an up-flow or a down-flow fluid bed reactor. The invention provides efficient distribution and plug flow like fluid flow through the fluid bed where turbulence and/or back-mixing of the fluid are minimized. In accordance with the invention a fluid bed system for use in treating a fluid by contacting the fluid with a solid phase media is provided and the system includes a reactor chamber adapted to contain the solid phase media and at least one fluid distribution means adapted to distribute and/or deliver the fluid to be treated among the particles of the medium.Type: GrantFiled: May 10, 2001Date of Patent: December 20, 2005Assignee: Upfront Chromatography A/SInventors: Jurgen Hubbuch, Timothy J. Hobley, Owen R. T. Thomas, Allan Lihme, Marie B. Hansen, Morten A. Olander
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Patent number: 6896813Abstract: A matrix for water decontamination has an amended sorbant cellulose substrate with an iron (ferric) oxyhydroxide component and a component to sorb dissolved organic compounds retained by the cellulose substrate.Type: GrantFiled: March 31, 2003Date of Patent: May 24, 2005Assignee: The United States of America as represented by the Secretary of the Department of the InteriorInventors: Michalann Kunic Harthill, Nancy Shoemaker Simon
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Patent number: 6887386Abstract: A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidized bed riser for desorption of ions (operating as a riser fluidized bed) to provide regenerated particles. Ion exchange particles circulate continuously between the riser and the downer i.e. the particles that have adsorbed ions in the absorber pass from the adsorber (downer) to the desorber where they are regenerated and the so regenerated particles are return to the adsorber near the top of the adsorber column. The LSCFB can be used in processes for continuous recovery of the ions of interest.Type: GrantFiled: February 17, 2004Date of Patent: May 3, 2005Assignee: The University of Western OntarioInventors: Amarjeet Singh Bassi, Jingxu Zhu, Qingdao Lan, Argyrios Margaritis, Ying Zheng
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Patent number: 6881761Abstract: Disclosed are (1) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, (2) an alkali-resistant, high-strength porous polymer particle having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, a part of the ester bonds being saponified and converted to a hydroxyl group(s), (3) a porous polymer particle comprising a polymer substrate having ester bonds connected to a group containing a quaternary ammonium structure through a spacer molecule, the porous polymer particles being treated with an alkaline solution to generate a hydroxyl and/or a carboxyl group on a surface of the substrate, (4) an anion exchanger comprising any one of the particles (1) to (3) above, (5) a packing material for anion chromatography comprising the anion exchanger (4) above, (6) a column for anion chromatography using the anion exchanger (4) above, and (7) a method for measType: GrantFiled: March 7, 2001Date of Patent: April 19, 2005Assignee: Showa Denko K.K.Inventors: Takashi Kotsuka, Kuniaki Shimbo, Hiroshi Suzuki, Hisako Sakuma, Toshio Tokuda
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Patent number: 6852232Abstract: A method of coacting a fluid with a media, such as granular particles. The media is moved to an upper portion in an upright media container, and held there during a treatment cycle in which the fluid is coacted with the media. When the media requires regeneration, the media is allowed to fall to a lower portion of the media container where a regeneration fluid is passed through the media.Type: GrantFiled: October 15, 2001Date of Patent: February 8, 2005Inventor: John D. Martin
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Patent number: 6830694Abstract: Components are separated from liquid or gaseous media with the aid of a nanocomposite comprising nanoparticles in a matrix, wherein the liquid or gaseous medium is brought into contact with the nanocomposite in such a way that at least part of the components to be separated off is bound to the nanocomposite and the resulting laden nanocomposite is separated from the liquid or gaseous medium.Type: GrantFiled: September 9, 2002Date of Patent: December 14, 2004Assignee: Institut fuer Neue Materialien gemeinnuetzige GmbHInventors: Thomas Schiestel, Thomas Mueller, Hermann Schirra, Helmut Schmidt
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Patent number: 6805800Abstract: A method and apparatus (101) for the recovery of fat soluble compounds, such as beta carotene, is described. In one embodiment of the invention a solution (102) containing a fat soluble compound is passed through a fluidised bed (104) of crystalline metallic ore particles, such as magnetite, allowing the fat soluble compound to bind to the particles to form a complex (109). The fat soluble compound is released from the complex (109) by passing a wash solution (107) through the fluidised bed and subsequently collected in solution (108). The crystalline metallic ore particles may be reused.Type: GrantFiled: September 10, 2001Date of Patent: October 19, 2004Assignee: Beta Carotene Investments LimitedInventor: Peter James Keating
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Patent number: 6797175Abstract: A device and process for injecting a diverted fluid into a simulated moving bed comprises a vessel containing beds of adsorbant Ai separated by plates Pi for distributing and extracting fluids, each plate comprising at least one pannel, each pannel comprising a single chamber Ci for distributing, mixing and/or extracting fluid, and a bypass circuit placing a plate in communication with a bypass line (Li, j). The device also comprises means (14, Voi,j, 20) for bringing at least one chamber (Ci) into communication with at least one bypass line (Li, j); one end of the bypass line is connected with said chamber Ci of a pannel of plate Pi and the other end communicates with a region (Ri+1) of a pannel of the distributor plate Pi+1, said region being distinct from the distribution chamber Ci+1. Application to separating n-paraffins containing 10 to 13 carbon atoms from sweetened kerosene type feeds.Type: GrantFiled: December 17, 2002Date of Patent: September 28, 2004Assignee: Institut Francais du PetroleInventor: Gérard Hotier
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Patent number: 6786336Abstract: A biosorbent composition, process of preparing and use thereof wherein the biosorbent composition comprises a chitosan-coated substrate. Useful substrates include support materials such as a ceramic support material. The biosorbent composition of the instant invention is useful in treating aqueous systems, including wastewater and aqueous waste streams, by removing undesired heavy metals.Type: GrantFiled: March 10, 2003Date of Patent: September 7, 2004Assignees: The United States of America as represented by Secretary of the Army, University of Illinois at Urbana-ChampaignInventors: Veera M. Boddu, Edgar Dean Smith
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Publication number: 20040124151Abstract: A method of removing a heavy metal from a composition comprises: (1) providing a fibrous protein fiber; (2) agitating the fibrous protein fiber; (3) making a slurry of the agitated fibrous protein fiber; (4) contacting the agitated fibrous protein fiber slurry with a composition containing a heavy metal ion or a heavy metal ion complex; and (5) filtering a supernatant produced in step (4) to remove the heavy metal from the composition. The fibrous protein of the fibrous protein fiber can be selected from the group consisting of keratins, collagens, fibrins, and elastins. Typically, the fibrous protein of the fibrous protein fiber is a keratin.Type: ApplicationFiled: June 20, 2003Publication date: July 1, 2004Applicant: MAXIM, LLC, a limited liability corporationInventors: Carlo Licata, Rajendra Mehta, Manorangan Misra
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Patent number: 6746608Abstract: The invention is directed to fluorinated particles having adsorbent properties for superior performance as the stationary phase for use in chromatographic separations. In particular, the fluorinated surface of such particles of the invention presents unusual and unexpected polarity that is beneficial in performing chromatographic separations such as that used for DNA.Type: GrantFiled: December 12, 2002Date of Patent: June 8, 2004Assignee: Prometic Biosciences, Inc.Inventor: Leonard H. Smiley
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Patent number: 6736976Abstract: A fluid treatment device for reducing the level of a chemical compound in a fluid. The device comprises: a fluid inlet; a fluid outlet; a flow-through fluid treatment zone having comprising: a radiation source, an adsorbent and a photocatalyst. The fluid treatment zone is reversibly operable between: (i) a first mode in which the fluid flows in a first direction and at least a portion of the chemical compound is adsorbed on the adsorbent; and (ii) a second mode in which the fluid flows in a second direction different from the first direction in which the absorbed chemical compound is exposed to radiation from the radiation resulting in photooxidation of the chemical compound.Type: GrantFiled: April 19, 2001Date of Patent: May 18, 2004Inventors: Apostolos Kantzas, Cooper H. Langford, Amit Bhargava, Alex Starosud
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Patent number: 6685838Abstract: A method of removing both Sr and Cs from an alkaline solution having a pH between about 9 to 14 includes providing a keratin protein from essentially a fiber portion separated from a quill portion of a poultry feather. A slurry is made of the keratin protein and the alkaline solution and is treated ultrasonically. The Sr and Cs may each be present in the alkaline solution at least at about 5 ppb. The keratin protein is contacted with the Sr and Cs by mechanical agitation at a temperature between about 20 to 90° C. and at a pressure not greater than about 10 psi. A supernatant produced in the step of contacting is then filtered.Type: GrantFiled: June 6, 2001Date of Patent: February 3, 2004Assignee: Maxim LLCInventors: Carlo Licata, Rajendra Mehta, Manoranjan Misra
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Patent number: 6670309Abstract: In preparing a purified fluorine-based solvent from a fluorine-based solution comprising a lubricant based on a fluororesin having an organic terminal group and a fluorocarbon-based solvent, impurities including ionic pollutants contained in the fluorine-based solution or the lubricant are selectively removed by an adsorption process. The preparation apparatus of a purified fluorine-based solvent is also disclosed.Type: GrantFiled: February 28, 2001Date of Patent: December 30, 2003Assignee: Fujitsu LimitedInventors: Hiroshi Chiba, Keiji Watanabe, Eishin Yamakawa, Takeshi Tokairin
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Patent number: 6669851Abstract: A colloid comprises a sulfone polymer. The colloid may be used as a replacement for activated carbon or charcoal in water purification systems. Unlike activated carbon, the colloid is advantageously regenerated chemically and reused.Type: GrantFiled: November 26, 2001Date of Patent: December 30, 2003Assignee: Board of Trustees of University of IllinoisInventors: Mark M. Clark, Robert Riley
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Patent number: 6669849Abstract: The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant such as dissolved organic carbon, dispersing the resin in the contaminated water to enable adsorption of the dissolved organic carbon onto the resin, and separating the resin loaded with contaminant from the water. In a preferred embodiment the process employs a magnetic ion-exchange resin.Type: GrantFiled: May 30, 1997Date of Patent: December 30, 2003Assignee: Orica Australia Pty LtdInventors: Hung Van Nguyen, Donald Bruce Bursill, James Young Morran, Mary Drikas, Veronica Laurel Pearce
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Patent number: 6660780Abstract: A method of making a molecularly imprinted porous structure makes use of a surfactant analog of the molecule to be imprinted that has the imprint molecule portion serving as the surfactant headgroup. The surfactant analog is allowed to self-assemble in a mixture to create at least one supramolecular structure having exposed imprint groups. The imprinted porous structure is formed by adding reactive monomers to the mixture and allowing the monomers to polymerize, with the supramolecular structure serving as a template. The resulting solid structure has a shape that is complementary to the shape of the supramolecular structure and has cavities that are the mirror image of the imprint group. Similarly, molecularly imprinted particles may be made by using the surfactant to create a water-in-oil microemulsion wherein the imprint groups are exposed to the water phase.Type: GrantFiled: November 27, 2002Date of Patent: December 9, 2003Assignee: The United States of America as represented by the Secretary of the NavyInventors: Michael A. Markowitz, Paul E. Schoen, Bruce P. Gaber, Banahalli R. Ratna, Paul R. Kust, David C. Turner, Douglas S. Clark, Jonathan S. Dordick
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Publication number: 20030217970Abstract: The present invention relates to a method of fractionating liquid mixtures or solutions, comprising the steps of subjecting a feed in the form of a liquid mixture or solution to a first chromatographic separation, thereby recovering at least a fraction (A) and a fraction (B) both containing a first component or product, subjecting a mixture or solution derived from or comprising said fraction (A) to a second chromatographic separation, thereby recovering at least a fraction (C) rich in said first component or product and subjecting a mixture or solution derived from or comprising said fraction (B) to a third chromatographic separation, thereby recovering at least a fraction (D) also rich in said first component or product, and whereby at least two fractions are recovered from the second and third chromatographic separations.Type: ApplicationFiled: March 14, 2003Publication date: November 27, 2003Applicant: Danisco Sweeteners OyInventors: Heikki Heikkila, Jarmo Kuisma, Jari Lewandowski, Hannu Paananen, Vili Ravanko, Jukka Rinne
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Publication number: 20030192829Abstract: The present invention provides a filler having a high productivity suitable for preparative separation by simulated moving bed chromatography. That is, there is provided a filler for enantiomeric isomer separation by simulated moving bed chromatography, which has a porous carrier carrying a polysaccharide derivative thereon and has a TS coefficient in a range of 0.55 to 1.Type: ApplicationFiled: October 24, 2002Publication date: October 16, 2003Inventors: Atsushi Ohnishi, Koichi Murazumi
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Patent number: 6623644Abstract: The present invention is drawn to polyamide ligand-containing polymeric resins and methods of using the same for removing, separating, and/or concentrating certain desired metal ions from solutions, even when the desired ions are in the presence of other metal ions and/or hydrogen ions at much higher concentrations. The unique composition of matter of this invention is a polyamide ligand-containing polymeric resin which is a reaction product of a hydroxymethylated polyamide ligand and a polymerization and/or crosslinking agent. Specifically, the polymeric resins of the present invention are comprised of from 10 to 50,000 polyamide ligand units wherein each polyamide ligand unit contains at least three amide groups (preferably from three to eight amide groups) and two amine groups separated by at least two carbons. Each amide group, after polymerization, may remain hydroxymethylated or be crosslinked to other polyamide ligand units through a crosslinking agent.Type: GrantFiled: September 27, 2001Date of Patent: September 23, 2003Assignee: IBC Advanced Techologies, Inc.Inventors: Ronald L. Bruening, Krzysztof E. Krakowiak
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Patent number: 6602502Abstract: Immunoassays of psychoactive drugs including psychotomimetic drugs, narcotic drugs, and tetrahydrocannabinols and treatment methods based on the antigenic properties of protein conjugates of these drugs. These methods are based upon treating the psychoactive substances as haptens and utilizing their protein conjugates to produce antibodies to the psychoactive materials themselves. The immunoassay methods include both agglutination and agglutination-inhibition reactions. The treatment methods include treatment of both exogenous, administered drugs (such as cannabinols, LSD, heroin and morphine) endogenous substances (such as N,N-Dimethyltryptamine and 5-Methoxy-N,N-Dimethyltryptamine.Type: GrantFiled: May 13, 1991Date of Patent: August 5, 2003Inventor: Meir Strahilevitz
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Publication number: 20030139483Abstract: A method of making a molecularly imprinted porous structure makes use of a surfactant analog of the molecule to be imprinted that has the imprint molecule portion serving as the surfactant headgroup. The surfactant analog is allowed to self-assemble in a mixture to create at least one supramolecular structure having exposed imprint groups. The imprinted porous structure is formed by adding reactive monomers to the mixture and allowing the monomers to polymerize, with the supramolecular structure serving as a template. The resulting solid structure has a shape that is complementary to the shape of the supramolecular structure and has cavities that are the mirror image of the imprint group. Similarly, molecularly imprinted particles may be made by using the surfactant to create a water-in-oil microemulsion wherein the imprint groups are exposed to the water phase.Type: ApplicationFiled: January 8, 2003Publication date: July 24, 2003Inventors: Michael A. Markowitz, Paul E. Schoen, Bruce P. Gaber, Banahalli R. Ratna, Paul R. Kust, David C. Turner, Douglas S. Clark, Jonathan S. Dordick
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Publication number: 20030127394Abstract: A device and process for injecting a diverted fluid into a simulated moving bed comprises a vessel containing beds of adsorbant Ai separated by plates Pi for distributing and extracting fluids, each plate comprising at least one pannel, each pannel comprising a single chamber Ci for distributing, mixing and/or extracting fluid, and a bypass circuit placing a plate in communication with a bypass line (Li, j). The device also comprises means (14, Voi,j, 20) for bringing at least one chamber (Ci) into communication with at least one bypass line (Li, j); one end of the bypass line is connected with said chamber Ci of a pannel of plate Pi and the other end communicates with a region (Ri+1) of a pannel of the distributor plate Pi+1, said region being distinct from the distribution chamber Ci+1.Type: ApplicationFiled: December 17, 2002Publication date: July 10, 2003Applicant: Institut Francais du PetroleInventor: Gerard Hotier
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Patent number: 6566145Abstract: The present invention is a disposable apparatus for the rapid, low-volume solid phase extraction of analytes from a variety of sources. The apparatus of the present invention is configured as a pipette tip and contains a loosely confined stationary phase. The mobility of the stationary phase particles enables rapid mixing and equilibration with a sample solution during agitation. The analyte may thereby be extracted in less time with less solvent, removing the need for a separate concentration step.Type: GrantFiled: February 9, 2001Date of Patent: May 20, 2003Inventor: William E Brewer
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Patent number: 6537456Abstract: A process for treatment of water via membrane separation to remove hardness and non-hydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable components, such as silica, by adjusting the pH up to about 10.5 or higher. Their separation by the membrane is significantly increased. The passage of boron, silica and TOC is reduced by a factor of ten or more. Recovery of 90% or higher is achievable with most brackish feedwaters, while substantial reduction in cleaning frequency is simultaneously achieved. The apparatus used for the water treatment process includes reverse osmosis membrane(s) (30), mixed bed ion exchange unit (44, 46), micron filter (48), ultraviolet sterilization unit (49), decarbonation unit (20), and electrodeionization unit (150).Type: GrantFiled: September 28, 1999Date of Patent: March 25, 2003Inventor: Debasish Mukhopadhyay
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Patent number: 6531267Abstract: Disclosed is a method for producing an acid sensitive liquid composition. The method involves passing an acid sensitive liquid composition containing a carbonate represented by the formula ROC(═O)OR1 wherein R and R1 independently are a hydrocarbyl group of 1 to about 10 carbon atoms, through at least one of the following two filter sheets: (a) a filter sheet containing a self-supporting fibrous matrix having immobilized therein a particulate filter aid and a particulate ion exchange resin having an average particle size of from about 2 to about 10 microns, wherein the particulate filter aid and ion exchange resin particles are distributed substantially uniformly throughout a cross-section of said matrix; and/or (b) a filter sheet containing a self-supporting matrix of fibers having immobilized therein particulate filter aid and binder resin, and having an average pore size of about 0.05 to 0.5 &mgr;m.Type: GrantFiled: April 11, 2001Date of Patent: March 11, 2003Assignee: Clariant Finance (BVI) LimitedInventor: Joseph E. Oberlander
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Publication number: 20030038083Abstract: Components are separated from liquid or gaseous media with the aid of a nanocomposite comprising nanoparticles in a matrix, wherein the liquid or gaseous medium is brought into contact with the nanocomposite in such a way that at least part of the components to be separated off is bound to the nanocomposite and the resulting laden nanocomposite is separated from the liquid or gaseous medium.Type: ApplicationFiled: September 9, 2002Publication date: February 27, 2003Inventors: Thomas Schiestel, Thomas Mueller, Hermann Schirra, Helmut Schmidt
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Publication number: 20030024883Abstract: A chemical distribution system having improved organic solvent fluid purity and consistency includes a vessel containing ion-exchange media positioned within a fluid flow pathway such that the organic solvent fluid passes through the ion-exchange media, thereby effecting removal of undesired impurities. Different embodiments of the invention position the vessel at varying locations within the fluid flow pathway. The chemical distribution system also preferably includes a return chemical flow pathway that recirculates purified organic solvent fluid through the ion-exchange media-containing vessel and thereby enables the system operator to conduct incremental adjustment of the solvent purity until a desired overall purity is attained.Type: ApplicationFiled: August 29, 2002Publication date: February 6, 2003Inventor: William H. Mullee
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Publication number: 20030019813Abstract: The invention relates to antimicrobial foam materials with amino alcohols, their preparation, and their use.Type: ApplicationFiled: June 28, 2002Publication date: January 30, 2003Applicant: DE GUSSA AGInventors: Peter Ottersbach, Martina Inhester
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Patent number: 6508939Abstract: By passing an alkali regenerating agent A through a basic anion exchange resin (3), and through a strongly acidic cation exchange resin (4), the basic anion exchange resin can be regenerated while amphoteric organic materials such as the amino acids captured at the strongly acidic cation exchange resin can be desorbed. Then, an acid regenerating agent B is passed through the strongly acidic cation exchange resin to regenerate the strongly acidic cation exchange resin.Type: GrantFiled: October 22, 2001Date of Patent: January 21, 2003Assignee: Organo CorporationInventor: Yuji Asakawa
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Publication number: 20020187439Abstract: Disclosed is a method for producing an acid sensitive liquid composition. The method involves passing an acid sensitive liquid composition containing a carbonate represented by the formula ROC(=O)OR1 wherein R and R1 independently are a hydrocarbyl group of 1 to about 10 carbon atoms, through at least one of the following two filter sheets: (a) a filter sheet containing a self-supporting fibrous matrix having immobilized therein a particulate filter aid and a particulate ion exchange resin having an average particle size of from about 2 to about 10 microns, wherein the particulate filter aid and ion exchange resin particles are distributed substantially uniformly throughout a cross-section of said matrix; and/or (b) a filter sheet containing a self-supporting matrix of fibers having immobilized therein particulate filter aid and binder resin, and having an average pore size of about 0.05 to 0.5 &mgr;m.Type: ApplicationFiled: April 11, 2001Publication date: December 12, 2002Inventor: Joseph E. Oberlander
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Patent number: 6488859Abstract: A cross-linked water-insoluble ion exchange resin comprised of polymerized monomers having a phenyl ring is disclosed. A contemplated resin contains (i) polymerized phenyl ring-containing monomers having a phosphonic acid ligand linked to the phenyl ring, (ii) about 2 to about 5 millimoles per gram (mmol/g) of phosphorus as phosphonic acid ligands, and (iii) a sufficient amount of a sulfonic acid ligand such that the ratio of mmol/g of phosphonic acid to mmol/g sulfonic acid is up to 3:1. A process for removing polyvalent metal cations from aqueous solution, and a process for removing iron(III) cations from acidic copper(II) cation-containing solutions that utilize the contemplated resin or other resins are disclosed.Type: GrantFiled: May 7, 2001Date of Patent: December 3, 2002Assignees: Arch Development Corp, The University of Tennessee Research CorpInventors: Spiro Alexandratos, Christopher A. Shelley, E. Philip Horwitz, Renato Chiarizia, Michael J. Gula, Sui Xue, James T. Harvey
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Patent number: 6461858Abstract: An enzyme is immobilized on a solid support and can react selectively with one enantiomer in an enantiomeric mixture. A methods of using the enzyme immobilized solid support in conjunct with a separating means to separate enantiomeric mixtures is described. An apparatus for separating an enantiomeric mixture using an enzyme immobilized on a solid support is also described.Type: GrantFiled: January 26, 1999Date of Patent: October 8, 2002Assignee: Pharm-Eco Laboratories, Inc.Inventors: Richard L. Gabriel, David A. Swanson
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Patent number: 6444150Abstract: A method for packing a stationary phase into a small diameter fluid passageway or flow channel. Capillary action is employed to distribute a stationary phase uniformly along both the length and diameter of the flow channel. The method disclosed here: 1) eliminates the need for high pressure pumps and fittings and the safety hazards associated therewith; 2) allows the use of readily available commercial microparticles, either coated or uncoated, as the stationary phase; 3) provides for different types of particles, different particle sizes, and different particle size distributions to be packed in sequence, or simultaneously; 4) eliminates the need for plugging the flow channel prior to adding the stationary phase to retain the packing particles; and 5) many capillaries can be filled simultaneously.Type: GrantFiled: September 25, 1998Date of Patent: September 3, 2002Assignee: Sandia CorporationInventor: Don W. Arnold
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Patent number: 6436293Abstract: A device for reducing water hardness suitable for the use in a household washing machine, in particular a dishwasher, comprising a container within which ionic exchange resins are housed, which provide to reduce the hardness degree of the water lapping them and means for regenerating the softening efficiency of said resins, wherein at least a portion of said resins are contained in a delimited space, a wall of said space comprises a movable or elastic element, means are provided for detecting the movement of said movable or elastic element.Type: GrantFiled: March 28, 2000Date of Patent: August 20, 2002Assignee: T & P S.p.A.Inventor: Carlo Carli
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Patent number: 6428707Abstract: A method for adsorption of a substance from a liquid sample on a fluidized bead or stirred suspension, in which the beads used comprise a base matrix and exhibit a structure having affinity to the substance, characterized in that the structure is covalently bound to the base matrix via an extender. Populations of beads in which the beads contain a filler incorporated in a base matrix and an extender are also described.Type: GrantFiled: March 13, 2000Date of Patent: August 6, 2002Assignee: Amersham Pharmacia Biotech ABInventors: Hans Berg, Hasse Hansson, Lennart Kagedal
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Patent number: 6416672Abstract: Small amorphous silica particles are used to provide a relatively large surface area upon which silica will preferentially adsorb, thereby preventing or substantially reducing scaling caused by deposition of silica on evaporative cooling tower components, especially heat exchange surfaces. The silica spheres are contacted by the cooling tower water in a sidestream reactor, then separated using gravity separation, microfiltration, vacuum filtration, or other suitable separation technology. Cooling tower modifications for implementing the invention process have been designed.Type: GrantFiled: August 25, 2000Date of Patent: July 9, 2002Assignee: The Regents of the University of CaliforniaInventor: William S. Midkiff
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Patent number: 6407212Abstract: For separating non-conventional transmissible agents (NCTAs), i.e. causative agent(s), of transmissible spongiform encephalopathies (TSEs) from a solution of a protein susceptible to contamination with NCTAs, particularly from blood products, at least one adsorbent is suspended, for a time of at least 10 minutes. The absorbent is selected from kieselguhr, diatomaceous earth, silicic acid, clay minerals, metal hydroxide, metal oxihydrate, cellulose, perlite, bentonite, and water-insoluble synthetic polymers. The obtained suspension is agitated, and subsequently the adsorbent is separated from the protein solution.Type: GrantFiled: July 28, 2000Date of Patent: June 18, 2002Assignee: ZLB Bioplasma AGInventors: Jean-Jacques Morgenthaler, Jacques-Andre Maring, Markus Rentsch
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Publication number: 20020043501Abstract: A continuous adsorption facility is used to purify a liquid stream that contains impurities. A solid adsorbent is used having a special affinity for the impurities over the desired components in the liquid feed. An adsorber is constructed, employing gravity for the transfer of adsorbent between stages with a series of stages each having fluidized beds with limited bed expansion characteristics where the solid adsorbent countercurrent-contacts the upwardly flowing fresh feed introduced at the base. The adsorbent is regenerated with return of most of the desired components from the porous solids becoming part of the adsorber-treated product. Impurities are further removed during regeneration and disposed of separately. Using a novel regeneration arrangement, the reactivating gas may be reduced to below 4% of prior requirements. Capital investment and operating costs economically afford ultra-low sulfur clean gasoline meeting standards imposed by auto manufacturers worldwide.Type: ApplicationFiled: August 22, 2001Publication date: April 18, 2002Inventor: Robert L. Irvine
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Patent number: 6365147Abstract: The present invention relates to methods for depleting endotoxin from biological solutions by exposure of solutions containing endotoxin to an immobilized metal affinity chromatography matrix composed of a metal ion such as iron (III) bounds to a resin, wherein the metal is capable of selectively binding endotoxin in the solution. These methods are useful for purifying, for example, biological products prepared using bacterial cells, or products in which bacterial contamination is problematic. In another embodiment, endotoxin in circulation in a body can be removed by exposing the blood to the aforementioned matrix, whereby endotoxin is removed before the blood is returned to the body.Type: GrantFiled: October 13, 1999Date of Patent: April 2, 2002Assignee: New Jersey Institute of TechnologyInventors: Robert Gang Luo, Yun Kang
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Patent number: 6362240Abstract: By passing an alkali regenerating agent A through a basic anion exchange resin (3), and through a strongly acidic cation exchange resin (4), the basic anion exchange resin can be regenerated while amphoteric organic materials such as the amino acids captured at the strongly acidic cation exchange resin can be desorbed. Then, an acid regenerating agent B is passed through the strongly acidic cation exchange resin to regenerate the strongly acidic cation exchange resin.Type: GrantFiled: December 19, 2000Date of Patent: March 26, 2002Assignee: Organo CorporationInventor: Yuji Asakawa