Metal Containing Patents (Class 210/500.25)
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Patent number: 6375843Abstract: A liquid solid separation apparatus having a porous metal pipe sealed inside a non-porous metal pipe which allows a portion of the liquids, e.g., hydrocarbons and water to pass through the first pipe into the non porous pipe from which they are removed while solids are retained within the porous pipe. In the process there is a system pressure which aids in the filtration and a circulating velocity which removes the detained solids. Preferably a portion of these solids with reduced liquid content are recycled back to the system, mixed with fresh feed. By recycling a porion of the recovered solid concentrate the velocity of the flow in the system kept constant and the system itself is stabilized.Type: GrantFiled: March 2, 2000Date of Patent: April 23, 2002Assignee: Environmental Safeguards, Inc.Inventors: J. Leon Potter, Ross D. Roberts, Jr.
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Patent number: 6355082Abstract: It is a metal filter 1 including a fine filtering layer 3 and a supporting member 2 sintered to be porous and having a covering surface 4 to integrate the fine filtering layer 3 into a laminate to maintain its shape. The average pore diameter of the fine filtering layer 3 is set to be smaller than an average pore diameter of the supporting member 2. The covering surface 4 is formed in an uneven shape so as to allow a filtering surface of the fine filtering layer 3 to be an undulating filtering surface 3A such that the area ratio S1/S0 of its real filtration area S1 to the standard filtration area S0 of the case where it is not formed in an uneven shape, is larger than or equal to 1.3. The average thickness of the fine filtering layer 3 at valley portions 6 of the uneven shape is set to be larger than the average thickness of the fine filtering layer 3 at the crest portions 5 of the uneven shape, and the undulating filtering surface 3A is formed in a smoothly curved surface shape.Type: GrantFiled: July 19, 2000Date of Patent: March 12, 2002Assignee: Nippon Seisen Co., Ltd.Inventor: Hideomi Ishibe
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Patent number: 6354444Abstract: An asymmetric membrane comprising a tubular polymer film in combination with a tubular braid on which the film is supported, requires the braid be macroporous and flexible, yet sufficiently strong to withstand continuous flexing, stretching and abrasion during use for microfiltration (MF) or ultrafiltration (UF). The specifications for a braid of a long-lived membrane are provided. A membrane is formed by supporting a polymer film in which particles of calcined &agr;-alumina are dispersed, on the defined tubular braid.Type: GrantFiled: June 17, 1999Date of Patent: March 12, 2002Assignee: Zenon Environmental Inc.Inventors: Mailvaganam Mahendran, Kenneth Paul Goodboy, Luigi Fabbricino
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Patent number: 6355093Abstract: This invention relates to catalytic reactor membranes having a gas-impermeable membrane for transport of oxygen anions. The membrane has an oxidation surface and a reduction surface. The membrane is coated on its oxidation surface with an adherent catalyst layer and is optionally coated on its reduction surface with a catalyst that promotes reduction of an oxygen-containing species (e.g., O2, NO2, SO2, etc.) to generate oxygen anions on the membrane. The reactor has an oxidation zone and a reduction zone separated by the membrane. A component of an oxygen containing gas in the reduction zone is reduced at the membrane and a reduced species in a reactant gas in the oxidation zone of the reactor is oxidized. The reactor optionally contains a three-dimensional catalyst in the oxidation zone. The adherent catalyst layer and the three-dimensional catalyst are selected to promote a desired oxidation reaction, particularly a partial oxidation of a hydrocarbon.Type: GrantFiled: October 29, 1997Date of Patent: March 12, 2002Assignee: Eltron Research, INCInventors: Michael Schwartz, James H. White, Anthony F. Sammells
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Publication number: 20020023874Abstract: The invention relates to a permeable composite material, a method for producing said composite material, and the use of the composite material. The inventive composite material contains essentially a porous, permeable support, another constituent having been solidified on and in or on or in said support. Said other constituent essentially contains metallic compounds with elements of the 3rd to the 6th main group. The constituent is solidified to, on or in the support by heating a suspension of the constituent suspended in a metal oxide sol applied on and in or on or in the support. The invention hereby provides a means of producing a permeable composite material in very mild conditions, either by heating strongly for a short period or by heating more moderately for a longer period.Type: ApplicationFiled: August 30, 2001Publication date: February 28, 2002Applicant: C. G. FUER TECHNOLOGIE UND INNOVATION MBHInventors: Bernd Penth, Christian Hying, Gerhard Hoerpel, Friedrich Georg Schmidt
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Patent number: 6346192Abstract: A bacterial fluid filter includes a filter element supported by a backing member. The filter element and backing member are sealed, e.g., with one or more o-ring seals, in a housing to provide a filter assembly capable of filtering fluid under relatively high pressure. In one embodiment, a filter element, backing member, and seal are disposed in a removable and disposable housing that is sized to fit within a filter housing.Type: GrantFiled: May 14, 1999Date of Patent: February 12, 2002Assignee: TherOx, Inc.Inventors: Mark S. Buhr, Adib G. Daoud, Derek J. Daw, John E. Merritt
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Patent number: 6341701Abstract: The ceramic porous membrane comprises ceramic particles and ceramic sol particles (with the exception of TiO2 sol particles). The ceramic particles and the ceramic sol particles are kneaded to obtain a kneaded product or a slurry, and the kneaded product or the slurry are sintered at a lower temperature. The ceramic sol particles have an average particle diameter of ⅕ or less of an average particle diameter of the ceramic particles, and the ceramic sol has a solid content of 1 to 30% by weight based on the weight of solid content of the ceramic particles.Type: GrantFiled: December 22, 1997Date of Patent: January 29, 2002Assignee: NGK Insulators, Ltd.Inventors: Tomonori Takahashi, Manabu Isomura
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Patent number: 6340433Abstract: Aqueous streams containing organic and/or inorganic contaminants are purified by the removal of the contaminant by contacting the aqueous stream with a membrane formed from a porous, crystalline titanium silicate.Type: GrantFiled: September 15, 2000Date of Patent: January 22, 2002Assignee: Engelhard CorporationInventors: Steven M. Kuznicki, Richard M. Jacubinas, Jacqueline S. Curran, Valerie A. Bell
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Patent number: 6340379Abstract: A gas filter, a process for producing a gas filter and the use of the gas filter. The filtration of gases, in particular of gases which are contaminated by solids, e.g. automobile exhaust gases, is difficult since the solids which have been filtered out block the filter over the course of time. The gas filter of the invention can be used over relatively long periods of time since it is regenerable. The improvement achieved by the invention compared to conventional gas filters is that the filter comprises a composite material which can be heated in a simple manner by application of a voltage to the electrically conductive support material of the composite material and thermally decomposable substances which can block the filter can be decomposed. The filter of the invention can be used wherever gases which are contaminated by thermally decomposable solids have to be cleaned.Type: GrantFiled: July 26, 1999Date of Patent: January 22, 2002Assignee: Creavis Gesellschaft fuer Technologie und Innovation mBHInventors: Bernd Penth, Gerhard Hoerpel, Christian Hying
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Publication number: 20020001731Abstract: A metallic fabric for manufacturing a hollow body is welded at two edge areas and according to the present invention a metallic strip is welded on in the vicinity of the welded seam, whereby the width of the welded seam is narrower than the width of the metallic strip. An elastic material which flattens out vibrations of the hollow body and ensures protection of the welded seam is arranged between the metallic strip and the metallic fabric.Type: ApplicationFiled: August 15, 2000Publication date: January 3, 2002Applicant: GKD Gebr. Kufferath GmbH @$amp; Co. KGInventor: Ingo Kufferath
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Publication number: 20010037972Abstract: An improved fluid separating device for filtering a second fluid from a first fluid. The improved fluid separating device comprises a first layer of filter media comprising a sintered matrix of first fibers. A second layer of filter membrane comprises a matrix of second fibers. A third layer of filter media comprises a sintered matrix of third fibers. The first, second and third layers are formed into a lamination with the second layer being interposed between the first and third layers. The second layer has a pore size substantially less than the pore size of the first and third layers for enabling the second fluid to pass through the second layer and for inhibiting the first fluid from passing through the second layer for separating the second fluid from the first fluid. The improved fluid separating device is suitable for separating a gas from a liquid as well as separating a gas from a dissimilar gas.Type: ApplicationFiled: April 3, 2001Publication date: November 8, 2001Inventors: Nathaniel R. Quick, Alexander Sobolevsky, Michael Liberman, Michael C. Murray, Richard D. Range
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Patent number: 6309545Abstract: The invention relates to a permeable composite material, a method for producing said composite material, and the use of the composite material. The inventive composite material contains essentially a porous, permeable support, another constituent having been solidified on and in or on or in said support. Said other constituent essentially contains metallic compounds with elements of the 3rd to the 6th main group. The constituent is solidified to, on or in the support by heating a suspension of the constituent suspended in a metal oxide sol applied on and in or on or in the support. The invention hereby provides a means of producing a permeable composite material in very mild conditions, either by heating strongly for a short period or by heating more moderately for a longer period. The resulting permeable composite material is excellently suited to applications in filtration and membrane technology.Type: GrantFiled: August 13, 1999Date of Patent: October 30, 2001Assignee: Creavis Gesellschaft fuer Technologie und Innovation mbHInventors: Bernd Penth, Christian Hying, Gerhard Hoerpel, Friedrich Georg Schmidt
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Patent number: 6309546Abstract: A micro/ultrafiltering element (10) and method for making a filter element are provided. The filtering element comprises a multi-level support (26) having a filtering membrane layer (12) formed thereon comprising sintered particles (14) of uniform diameter. The filtering membrane preferably has an average pore size of from about 0.005-10 micrometers.Type: GrantFiled: July 8, 1999Date of Patent: October 30, 2001Assignee: Ellipsis CorporationInventors: Robert C. Herrmann, Steven M. Landin
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Patent number: 6299778Abstract: The invention relates to a catalytically active, permeable composite material, a method for producing said composite material, and the use of the composite material. The inventive composite material can be used for separating mixtures of materials. The fact that various catalytically active substances can be incorporated into the material in various ways makes it highly flexible in terms of possible applications with properties which can be adapted to the particular purpose of an application. The inventive composite material can be used as a catalytically active membrane electrode, for example. According to the invention, the material is obtained by solidifying a suspension on and in a porous, permeable support. The production of the material requires either a very short period of heat treatment at temperatures of around 400° C. or treatment for a longer period at very mild temperatures of below 100° C.Type: GrantFiled: July 28, 1999Date of Patent: October 9, 2001Assignee: Creavis Gesellschaft fuer Technologie und Innovation mbHInventors: Bernd Penth, Christian Hying, Mark Duda, Gerhard Hoerpel, Adolf Kuehnle
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Publication number: 20010015334Abstract: The present invention relates to a non-volatile facilitated transport separation membrane prepared by using a solid state polymer electrolyte, characterized in that it has good stability and improved permeance and selectivity of alkene-series unsaturated hydrocarbons.Type: ApplicationFiled: December 29, 2000Publication date: August 23, 2001Applicant: Korea Institute of Science and TechnologyInventors: Young-Soo Kang, Hyun-Chae Park, Jong-Ok Won, Seoung-Uk Hong, Tak-Min Kwon
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Publication number: 20010015336Abstract: A filtering medium and method for removing contaminants from an organic-based feed stream which includes the use of a layer of ceramic filter units having a plurality of elliptical or trisoidal openings extending therethrough to filter organic-based feed streams and to provide liquid distribution upstream of the catalyst beds.Type: ApplicationFiled: May 27, 1999Publication date: August 23, 2001Applicant: JOHN N. GLOVERInventor: JOHN N. GLOVER
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Patent number: 6264045Abstract: A filter media system, which is capable of operating in the microfiltration regime, offers: low cost, durability, high temperature and chemical resistance, no particulation, mechanical strength, separation efficiency, and biocompatibility. A filter media system is comprised of a carbon or ceramic composite substrate which contains a carbon or ceramic matrix reinforced with carbon or ceramic fibers. The composite has an array of carbon or ceramic fiber whiskers grown onto its surface or in its bulk. A process is provided for manufacturing the filter media system wherein a carbon fiber is disposed in a matrix deposited by a CVI or LPI process, at temperatures of about 900 to about 1200° C. to achieve a weight gain of about 10 to 200% (the ceramic matrix is deposited by a CVI process from an aqueous slurry or by use of a preceramic polymer). This composite is treated with an aqueous solution of metal catalyst salt and is then heated in hydrogen at elevated temperatures to reduce the metal salt to metal.Type: GrantFiled: May 29, 1998Date of Patent: July 24, 2001Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Raj Mathur
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Patent number: 6252123Abstract: This invention relates to a process for the separation of a metal complex catalyst and any free ligand which may be present, from a homogeneous organic synthesis reaction mixture using sub-nanoporous, chemically stable membranes having discrete pores which allow organic products and by-products to pass through the membrane as permeate while retaining substantially all of the metal complex catalyst and free ligand, if any, as retentate.Type: GrantFiled: July 8, 1999Date of Patent: June 26, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jay Fingeret Miller, Joan Ayer Rodberg, Brian Michael Roesch, George Ernest Keller, II, Lisa Evans Curry, Paul Frank Bryan, John Edward Davis, James Charles Hatfield
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Publication number: 20010001453Abstract: The invention concerns an inorganic nanofiltration membrane with a detachment threshold between 100 and 200 daltons and comprising: a multichannel ceramic monolith support consisting of a mixture of Al2O3 and of TiO2, a microfiltration membrane separating layer, an ultrafiltration membrane separating layer, preferably consisting of ZrO2, a nanofiltration membrane separating layer, preferably consisting of ZrO2, and obtained by a sol-gel type method. This inorganic nanofiltration membrane is designed for use in the sugar industry, more particularly for treating saline effluents derived from the regeneration of ion exchanging resins used if the refining of cane sugar.Type: ApplicationFiled: December 19, 2000Publication date: May 24, 2001Inventor: Valerie Thoraval
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Patent number: 6214757Abstract: A process for production of synthesis gas employing a catalytic membrane reactor wherein the membrane comprises a mixed metal oxide material.Type: GrantFiled: October 5, 1999Date of Patent: April 10, 2001Assignee: Eltron Research, Inc.Inventors: Michael Schwartz, James H. White, Anthony F. Sammells