By Use Of Organic Combustible Material Patents (Class 501/81)
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Patent number: 10357759Abstract: Disclosed are metal oxide catalysts, and methods for their use, that includes a bulk metal oxide catalyst composed of at least two metals and nesosilicate. The catalyst is capable of catalyzing the carbon dioxide reforming of methane to produce hydrogen and carbon monoxide.Type: GrantFiled: July 16, 2015Date of Patent: July 23, 2019Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Lawrence D'Souza, Vinu Viswanath, Ugo Ravon, Aghaddin Mamedov
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Patent number: 10232352Abstract: Ceramic candle filter and use of the filter in the removal of particulate matter in form of soot, ash, metals and metal compounds, together with hydrocarbons and optionally nitrogen oxides being present in process off-gas or engine exhaust gas, wherein a noble metal comprising catalyst is arranged on the permeation side of the filter and/or on the dispersion side of the filter and/or within wall of the filter, said noble metal comprising catalyst contains a noble metal in an amount of between 20 and 1000 ppm/weight of the filter.Type: GrantFiled: April 28, 2015Date of Patent: March 19, 2019Assignee: HALDOR TOPSØE A/SInventors: Joakim Reimer Thøgersen, Francesco Castellino, Lars Storm Pedersen
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Patent number: 9580359Abstract: A composition having nanoparticles of a boron carbide and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising boron and an organic component. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining boron and an organic compound having a char yield of at least 60% by weight, and heating to form boron carbide or boron nitride nanoparticles.Type: GrantFiled: July 17, 2014Date of Patent: February 28, 2017Assignee: The Government of the United States of America, as represented by the Secretary of the NavyInventors: Teddy M. Keller, Andrew Saab, Matthew Laskoski
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Patent number: 9527768Abstract: A process for making inorganic, metal oxide spheres that includes exposing solidified, molded microparticles that include a glass precursor composition to a temperature sufficient to transform the molded microparticles into molten glass and cooling the molten glass to form inorganic, metal oxide spheres.Type: GrantFiled: July 1, 2015Date of Patent: December 27, 2016Assignee: 3M Innovative Properties CompanyInventors: David C. Kramlich, John L. Vandenberg, Matthew H. Frey, Scott R. Culler, Kathleen M. Schakel-Carlson
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Patent number: 9309889Abstract: A screw-type compressor, in particular for use in a vehicle, wherein the screw-type compressor has an oil sump with a device for damping sloshing of oil. A screw-type compressor is made available in which the device for damping sloshing of oil is improved compared to the prior art. The device for damping sloshing of oil is a barrier device which prevents the oil from rising up a housing wall of the screw-type compressor.Type: GrantFiled: April 13, 2011Date of Patent: April 12, 2016Assignee: KNORR-BREMSE SYSTEME FUR SCHIENENFAHRZEUGE GMBHInventor: Engelbert Köck
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Patent number: 9108874Abstract: A process for making inorganic, metal oxide spheres that includes exposing solidified, molded microparticles that include a glass precursor composition to a temperature sufficient to transform the molded microparticles into molten glass and cooling the molten glass to form inorganic, metal oxide spheres.Type: GrantFiled: March 28, 2014Date of Patent: August 18, 2015Assignee: 3M Innovative Properties CompanyInventors: David C. Kramlich, John L. Vandenberg, Matthew H. Frey, Scott R. Culler, Kathleen M. Schakel-Carlson
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Publication number: 20150118478Abstract: The present embodiments disclosed herein are related to methods of preparing a macroporous ceramic body. According to some embodiments, a first mixture of ceramic-forming components is combined with a polymer network structure to form a second intermediate mixture comprising a polymer network. The polymer network is then removed in the drying and/or sintering step leaving an interconnected open pore network within the ceramic body. In some embodiments, the macroporous ceramic body comprises a three-dimensional, porous network comprising pores of about 3 mm to 11 mm.Type: ApplicationFiled: October 28, 2013Publication date: April 30, 2015Applicant: UNIVERSITI BRUNEI DARUSSALAMInventors: Piyasiri Ekanayake, Mohammad Iskandar bin Pg Hj Petra
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Publication number: 20140249020Abstract: The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.Type: ApplicationFiled: May 13, 2014Publication date: September 4, 2014Applicant: CORNING INCORPORATEDInventors: Daniel Edward McCauley, Anthony Nicholas Rodbourn, Patrick David Tepesch, Christopher John Warren
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Patent number: 8759240Abstract: The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.Type: GrantFiled: April 30, 2013Date of Patent: June 24, 2014Assignee: Corning IncorporatedInventors: Daniel Edward McCauley, Anthony Nicholas Rodbourn, Patrick David Tepesch, Christopher John Warren
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Publication number: 20140148329Abstract: A process for producing a honeycomb ceramic article includes providing a green honeycomb body including ceramic-forming materials and organic pore forming materials and subjecting the green honeycomb body to a firing cycle in a kiln in which steam is added to the kiln atmosphere in an amount from about 10% to about 100%, based on volume. Also provided are ceramic articles produced by the process.Type: ApplicationFiled: January 6, 2012Publication date: May 29, 2014Inventors: Douglas Munroe Beall, Dana Craig Bookbinder, Jianguo Wang
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Patent number: 8658550Abstract: An oxide-ceramic forming clay comprising an oxide-ceramic forming material, a layered double hydroxide, a pore-forming agent, and water, wherein the amount of the pore-forming agent is between 3 and 50 parts by mass by superaddition to 100 parts by mass of a sum of the oxide-ceramic forming material and the layered double hydroxide and a sum of the pore-forming agent and an organic binder is between 5 and 55 parts by mass also by superaddition which has environment-friendly characteristics in a forming firing step, and usage thereof.Type: GrantFiled: April 1, 2009Date of Patent: February 25, 2014Assignee: NGK Insulators, Ltd.Inventor: Takahiro Tomita
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Patent number: 8550257Abstract: A ceramic water purifying device is provided. The device includes a silver treated packed particle bed in one embodiment. The device may also include feldspar or bottled glass.Type: GrantFiled: June 2, 2010Date of Patent: October 8, 2013Inventor: Anthony Reid Harvey
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Publication number: 20130244860Abstract: The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.Type: ApplicationFiled: April 30, 2013Publication date: September 19, 2013Applicant: CORNING INCORPORATEDInventors: Daniel Edward McCauley, Anthony Nicholas Rodboum, Patrick David Tepesch, Christopher John Warren
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Patent number: 8450227Abstract: The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.Type: GrantFiled: February 28, 2011Date of Patent: May 28, 2013Assignee: Corning IncorporatedInventors: Daniel Edward McCauley, Anthony Nicholas Rodbourn, Patrick David Tepesch, Christopher John Warren
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Patent number: 8377836Abstract: The present disclosure relates to methods of making ceramic bodies using catalyzed pore formers and compositions for making the same.Type: GrantFiled: May 22, 2009Date of Patent: February 19, 2013Assignee: Corning IncorporatedInventors: Philippe J Barthe, Irene Mona Peterson, Andrew Paul Schermerhorn
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Patent number: 8138108Abstract: The present disclosure relates to aluminum titanate-containing ceramic-forming batch materials and methods using the same.Type: GrantFiled: February 27, 2009Date of Patent: March 20, 2012Assignee: Corning IncorporatedInventors: Patrick David Tepesch, Christopher John Warren
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Patent number: 8097203Abstract: The invention describes a high porosity ceramic article and method of manufacturing the same and intermediate dried honeycomb green body articles. The article may have a total porosity of at least about fifty-five percent, above sixty percent, or even above sixty-five percent. The method of manufacture includes mixing a ceramic-forming powder, an organic pore former, water, and a crosslinker. Drying causes a condensation reaction between the pore former and the crosslinker thereby forming a network within the green body that strengthens the green body and reduces cracking. The pore former may include starch or an activated cellulose compounds. Secondary pore forming agents, such as graphite may also be included.Type: GrantFiled: January 29, 2007Date of Patent: January 17, 2012Assignee: Corning IncorporatedInventors: Weiguo Miao, Steven Bolaji Ogunwumi, Jianguo Wang
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Publication number: 20110294650Abstract: This disclosure is directed to porous ceramic processing; and in particular to a method using selected pore forming materials to avoid high exotherms during the ceramic firing process, and the green bodies formed using the selected pore forming materials. The selected pore forming materials are homogeneous wax/non-ionic surfactant particles formed by a prilling process in which the wax is melted and the non-ionic surfactant is mixed into the wax prior to prilling. The disclosure is useful in the manufacture porous ceramic honeycomb bodies including ceramic honeycomb filter traps.Type: ApplicationFiled: May 18, 2011Publication date: December 1, 2011Inventors: Michele Fredholm, David Henry, Maxime Moreno
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Patent number: 8025838Abstract: The invention provides a process of making porous structures or materials, including the colloidal processing (e.g. slip casting, pressure casting, tape casting or electrophoretic deposition) of solid particle emulsions to form a green body that can be directly sintered without a de-binding step.Type: GrantFiled: June 27, 2006Date of Patent: September 27, 2011Assignee: K.U. Leuven Research & DevelopmentInventors: Bram Neirinck, Jozef Vleugels, Jan Fransaer, Omer Van Der Biest
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Patent number: 7977266Abstract: A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a low amount of one or more pore formers including at least one starch; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the low amount of pore former, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a low amount of the one or more pore formers including starch is disclosed.Type: GrantFiled: May 30, 2008Date of Patent: July 12, 2011Assignee: Corning IncorporatedInventors: David Lambie Tennent, Christopher John Warren
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Patent number: 7963402Abstract: The present invention relates to a ceramic filter device for molten metal filtration comprising a major ceramic phase and a minor carbon phase bonded by phosphate bond, a method for producing such filter devices, and the use of such filter devices for the filtration of molten steel.Type: GrantFiled: September 4, 2006Date of Patent: June 21, 2011Assignee: Sud-Chemie Hi-Tech Ceramics Inc.Inventor: Kassim Juma
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Patent number: 7947619Abstract: A porous grog with a body composition of clay and a source of Fe3+. Further, an earthenware water purification filter utilizing the porous grog in the body composition of the filter. Further, an earthenware filter utilizing Fe3+ treatment for water disinfection is disclosed. A water purification system incorporating said filter said water purification system capable of removing about 99% of all particles not less than 1.0 micron is size, and removing virtually 100% of fecal coliform indicators.Type: GrantFiled: August 1, 2007Date of Patent: May 24, 2011Inventor: A. Reid Harvey
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Patent number: 7807257Abstract: The present invention relates to a ceramic sheet having uniform quality over its entire surface with a decreased number of detects such as foreign matters and flaws. When the ceramic sheet was divided into sections of 30 mm square or smaller, each divided section has 5 or less defects detected based on an image obtained with a charge coupled device (CCD) camera. The present invention also relates to a method for producing the ceramic sheet. In this method, a green sheet or a calcined sheet mainly including spherical ceramic particles having an average particle diameter of 0.1 to less than 5 ?m was used as a spacer. By using this spacer, the green sheet for ceramic sheet slides smoothly on the spacer surface when it shrinks in baking, and the friction resistance between the green sheet for ceramic sheet and the spacer is lowered. In this manner, the method of the present invention can mass-produce the above-described high quality ceramic sheets.Type: GrantFiled: May 24, 2006Date of Patent: October 5, 2010Assignee: Nippon Shokubai Co., Ltd.Inventors: Kazuo Hata, Norikazu Aikawa, Keijirou Takasaki
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Patent number: 7737066Abstract: (1) A niobium monoxide powder for a capacitor represented by formula: NbOx (x=0.8 to 1.2) and optionally containing other elements in an amount of 50 to 200,000 ppm, having a tapping density of 0.5 to 2.5 g/ml, an average particle size of 10 to 1000 ?m, angle of repose from 10° to 60°, the BET specific surface area from 0.5 to 40 m2/g and a plurality of pore diameter peak tops in the pore distribution, and a producing method thereof; (2) a niobium monoxide sintered body, which is obtained by sintering the above niobium monoxide powder and, having a plurality of pore diameter peak tops in a range of 0.01 ?m to 500 ?m, preferably, the peak tops of two peaks among the plurality of pore diameter peak tops having a highest relative intensity are present in the range of 0.2 to 0.7 ?m and in the range of 0.7 to 3 ?m, respectively, and a producing method thereof; (3) a capacitor using the above sintered body and a producing method thereof; and (4) an electronic circuit and electronic device using the above capacitor.Type: GrantFiled: March 7, 2003Date of Patent: June 15, 2010Assignee: Showa Denko K.K.Inventors: Kazuhiro Omori, Kazumi Naito, Toshiya Kawasaki, Kouichi Wada
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Patent number: 7648932Abstract: The invention relates to a process for the production of a molded porous ceramic article containing ?-SiC, which process comprises the following steps: the preparation of a molded article containing silicon and carbon and the subsequent pyrolysis and siliconization of the article containing silicon and carbon to form SiC. The invention further relates to a molded porous ceramic article containing SiC which has been produced from a molded article containing silicon and carbon.Type: GrantFiled: July 5, 2006Date of Patent: January 19, 2010Assignee: Mann+Hummel Innenraumfilter GmbH & Co. KGInventors: Lars Weisensel, Thomas Wolff, Heino Sieber, Peter Greil
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Patent number: 7541303Abstract: The present invention provides materials and methods for the manufacture of high porosity ceramic exhaust filters employing relatively low amounts of pore formers, the filters combining efficient diesel particulate filtration with effective support for exhaust emissions control catalysts. Cordierite-forming ceramic batches comprising non-hydrated transition alumina powders of relatively large particle size provide high porosities with well-controlled pore sizes and with low filter thermal expansion coefficients and good mechanical strengths.Type: GrantFiled: December 21, 2005Date of Patent: June 2, 2009Assignee: Corning IncorporatedInventors: William Peter Addiego, Isabelle Marie Melscoet-Chauvel
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Patent number: 7491330Abstract: A porous grog with a body composition of water, clay and combustible material. Further, an earthenware water purification filter utilizing the porous grog in the body composition of the filter. Further, an earthenware filter utilizing silver chloride treatment for water disinfection is disclosed. A water purification system incorporating said filter, said water purification system capable of removing about 99% of all particles not less than 1.0 micron is size, and removing virtually 100% of fecal coliform indicators. In other embodiments, methods of disinfecting pottery toilet liners including various open surfaces using silver chloride treatment are disclosed.Type: GrantFiled: October 22, 2004Date of Patent: February 17, 2009Inventor: Anthony Reid Harvey
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Patent number: 7485282Abstract: A process is described for the synthesis of metal oxides in a nanometric particle form that cannot be easily obtained by conventional bulk synthesis techniques. The method makes use of Colloid Occluded Carbons (COC) and Colloid Imprinted Carbons (CIC) as reagents and as templating agents for the preparation of metal oxides in nanometric particle form. The nanometric particles are suitable useful in the field of chemical catalysis, particularly for petroleum refining when in porous form, and as sensors, optical wave guides, and coatings.Type: GrantFiled: March 23, 2005Date of Patent: February 3, 2009Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Seong-Su Kim
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Publication number: 20090018008Abstract: Process for the preparation of a ceramic wherein: 50% to 75% by weight of a compound intended to form a conductive phase, and 25 % to 50% by weight of one or more materials allowing the formation of insulating phases composed of silicon nitride and modified silicon oxynitride are mixed in a receptacle containing a liquid after a thermal treatment leading to sintering of the ceramic; this mixture is subjected to grinding, drying and sieving operations; this mixture is pressed; and this mixture is sintered so as to obtain a ceramic with a porosity of between 0 and 30%. The sintering is carried out under a pressure of at least 50 bar of a gas which is inert towards the constituents of the mixture. Ceramic thus obtained and spark plug comprising it.Type: ApplicationFiled: June 18, 2008Publication date: January 15, 2009Applicant: VIBRO METER FRANCEInventors: Aurelien JANKOWIAK, Philippe BLANCHART, Frederic TRENIT
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Patent number: 7431912Abstract: A producing method for producing zirconia hollow particles in which a zirconia powder mutually combines to form a porous shell layer thereby constructing a hollow structure, the method being characterized in mixing under a pressurized contact a resin powder and a zirconia powder of a grain size smaller than that of the resin powder, thereby forming a precursor by covering a surface of the resin powder with the zirconia powder in a partially embedded state, and calcining the precursor to expel the resin powder and to mutually sinter the zirconia powder.Type: GrantFiled: March 21, 2005Date of Patent: October 7, 2008Assignee: Yazaki CorporationInventors: Takayuki Kato, Makoto Egashira, Yasuhiro Shimizu, Takeo Hyodo, Miyuki Fukunaga
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Patent number: 7208438Abstract: A method of making a catalyst comprising mixing a metal oxide precursor and a pore former to form a metal oxide precursor mixture and calcining the metal oxide precursor mixture in the presence of a flowing gas having a flow rate to form the catalyst comprising metal oxide. The catalyst comprises a first distribution of pores having a median pore diameter of 10 to 50 angstroms and a second distribution of pores having a median pore diameter of 1 to 500 angstroms. The median pore diameter of the second distribution of pores is inversely related to the flow rate of the gas.Type: GrantFiled: July 30, 2004Date of Patent: April 24, 2007Assignee: General Electric CompanyInventors: Hugo Gerard Eduard Ingelbrecht, Sabyasachi Mandal, Ashok Menon, Pradeep Nadkarni, Rupesh Pawar, Kuppuswamy Raghunathan, Gert-Jan Schoenmakers, Sahida Sharma
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Patent number: 7199067Abstract: A homogeneous bulky porous ceramic material is provided, the average pore diameter D50 of which is less than 4 ?m and the closed porosity of which is less than 2 ?m, and having a bubble point that matches the pore diameter measured on the material. A hollow fiber based on the material and a module employing such fibers together with a paste constituting a precursor for the material and including a pore-forming agent are also provided.Type: GrantFiled: January 10, 2003Date of Patent: April 3, 2007Assignee: Pall CorporationInventors: Raymond Soria, Jean-Claude Foulon, Jean-Michel Cayrey
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Patent number: 7094390Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material and then converting the synthesis mixture to the porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures.Type: GrantFiled: May 13, 2005Date of Patent: August 22, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev, Svetlana Ivanova Mintova
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Patent number: 7087656Abstract: A block copolymer, preferably a block copolymer such as poly(isoprene-block-ethylene oxide), PI-b-PEO, is used as a structure directing agent for a polymer derived ceramic (PDC) precursor, preferably a silazane, most preferably a silazane commercially known as Ceraset. The PDC precursor is preferably polymerized after mixing with the block copolymer to form a nanostructured composite material. Through further heating steps, the nanostructured composite material can be transformed into a nanostructured non-oxide ceramic material, preferably a high temperature SiCN or SiC material.Type: GrantFiled: October 20, 2003Date of Patent: August 8, 2006Assignee: Cornell Research Foundation, Inc.Inventors: Carlos Garcia, Ulrich Wiesner
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Patent number: 6949239Abstract: The invention involves a process for production of macrostructures of a microporous material. The process is characterized by the fact that seeds formed in or introduced by ion exchange or adsorption to a porous organic ion exchanger with the desired size, shape and porosity are made to grow and form a continuous structure by further deposition of inorganic material from a synthesis solution under hydrothermal conditions. The organic ion exchanger can be eliminated by chemical destruction or dissolution and, in so doing, leaves behind an inorganic microporous structure with the size and shape of the employed organic ion exchanger.Type: GrantFiled: March 5, 2003Date of Patent: September 27, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev
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Patent number: 6932959Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming a porous inorganic material and then converting the synthesis mixture to a solid porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures, either before or after the porous inorganic material is hydrothermally treated with a structure directing agent to convert at least a portion of such porous inorganic material to a crystalline molecular sieve composition. The resulting macrostructure is composed of particles of the crystalline molecular sieve composition.Type: GrantFiled: July 1, 2003Date of Patent: August 23, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva
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Patent number: 6911158Abstract: The porous sound-absorbing material manufactured is light and has excellent heat resistance to be applicable to the exhaust nozzle etc. of a jet engine, can effectively absorb noise as that from a jet engine, over a wide range of frequencies, is free from variations in porosity, and provides stable performance characteristics. An essential feature thereof is the formation of a skeleton of the material, with aggregates containing voids. Thus, a porous sound-absorbing material having a skeleton of aggregates with first voids is described, wherein diameters of first voids of the aggregates are 50 ?m to 100 ?m, approximately, and diameters of second voids between the aggregates are 100 ?m to 600 ?m.Type: GrantFiled: November 28, 2001Date of Patent: June 28, 2005Assignees: Ishikawajima-Harima Heavy Industries Co., Ltd, Ube Industries, Ltd.Inventors: Tsutomu Oishi, Yoshiya Nakamura, Yoshizumi Tanaka, Mitsuhiko Sato
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Patent number: 6908604Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material and then converting the synthesis mixture to the porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures.Type: GrantFiled: April 5, 2002Date of Patent: June 21, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Per Johan Sterte, Lubomira Borislavova Tosheva, Valentin Panov Valtchev, Svetlana Ivanova Mintova
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Patent number: 6905598Abstract: A porous grog with a body composition of water, clay and combustible material. Further, an earthenware water purification filter utilizing the porous grog in the body composition of the filter. A water purification system incorporating said filter, said water purification system capable of removing about 99% of all particles not less than 1.0 micron is size.Type: GrantFiled: April 2, 2002Date of Patent: June 14, 2005Inventor: Anthony Reid Harvey
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Patent number: 6897175Abstract: A metal oxide catalyst precursor composition comprises a pore former and a catalyst reagent.Type: GrantFiled: September 19, 2002Date of Patent: May 24, 2005Assignee: General ElectricInventors: David Parrillo, Pramod Kumbhar, Ashok Menon, Mukund Parthasarathy, Geuch Zijlma, Sunil Ashtekar
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Patent number: 6887809Abstract: The invention relates to the field of ceramics and open-celled silicon carbide foam ceramics, which can find application, for example, as high temperature- and thermal shock-resistant silicon carbide foam. The aim of the invention is to disclose an open-celled silicon carbide foam ceramic with improved thermal shock resistance, which may be produced by a simple method. Said aim is achieved with an open-celled silicon carbide foam ceramic, the structure of which is made up of sintered silicon carbide with a 5 to 30% pore volume of closed pores with an average diameter of <20 ?m. The invention further relates to a method for the production of an open-celled silicon carbide foam ceramic, whereby coarse and fine silicon carbide powder in the ratio 20:80 to 80:20 parts are mixed and a suspension produced therefrom. An open-celled foam or open-celled network is then coated with said suspension, the foam or network material removed and sintering carried out at a temperature of >1800° C.Type: GrantFiled: August 3, 2001Date of Patent: May 3, 2005Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventor: Jörg Adler
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Patent number: 6869906Abstract: Mesoporous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds using an ionic structure directing agent are described. The silicon and aluminum, gallium or titanium centers in the structures are stable so that the framework of the structure does not collapse when heated in the presence of water or water vapor (steam). The steam stable compositions can be used as catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other reactions of organic compounds.Type: GrantFiled: October 2, 2003Date of Patent: March 22, 2005Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 6864198Abstract: A cordierite ceramic body having (i) a pore size distribution and a porosity which satisfy the relationship 10.2474/[(d50)2(pore fraction)]+0.0366183(d90)?0.00040119(d90)2+0.468815(1/pore fraction)2+0.0297715(d50)+1.61639(d50?d10)/d50?3.65, and (ii) a CTE (25°-800° C.) of ?15×10?7/° C., wherein the cordierite ceramic body is produced from a moldable mixture comprising cordierite-forming raw materials including (a) a fine talc having a median particle diameter, as measured by laser diffraction, of less than 10 micrometers, and a B.E.T. specific surface area of greater than 5 m2/g, and (b) a pore former. The cordierite ceramic body is suitable in the fabrication of cellular, wall-flow diesel particulate filters having a low pressure drop, high filtration efficiency and improved strength.Type: GrantFiled: January 30, 2003Date of Patent: March 8, 2005Assignee: Corning IncorporatedInventor: Gregory A. Merkel
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Patent number: 6843977Abstract: Porous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds or zeolite fragments using an organic porogen directing agent are described. The porous aluminosilicates optionally also can contain zeolite crystals depending upon the aging of the protozeolitic seeds. The silicon and aluminum, gallium or titanium centers in the structures are stable so that the framework of the structure does not collapse when heated in the presence of water or water vapor (steam). The steam stable compositions can be used as catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other reactions of organic compounds.Type: GrantFiled: December 19, 2001Date of Patent: January 18, 2005Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Publication number: 20040253279Abstract: An aqueous dispersion of ceramic particles and containing a polymerisable monomer was foamed before polymerisation, e.g., using a catalyst and initiator, was started.Type: ApplicationFiled: April 8, 2004Publication date: December 16, 2004Applicant: Dytech Corporation LimitedInventors: Robert Terence Smith, Rodney Martin Sambrook
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Patent number: 6777361Abstract: A ceramic composite material, for example, a ceramic molded body or a layer obtained by pyrolysis of a starting mixture, containing at least one polymer precursor material and at least one filler, which has an average particle size of less than 200 nm. Such a composite material may be used, for example, for producing fibers, filters, catalyst support materials, ceramic sheathed-element glow plugs, metal-containing reactive composite materials, porous protective shells for sensors, ceramic or partially ceramic coatings or microstructured ceramic components.Type: GrantFiled: October 29, 2002Date of Patent: August 17, 2004Assignee: Robert Bosch GmbHInventors: Wilfried Aichele, Wolfgang Dressler, Christof Rau, Volker Knoblauch, Alexander Kloncynski, Horst Boeder
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Patent number: 6770258Abstract: Mesoporous hexagonal, cubic or wormhole aluminosilicates derived from zeolite seeds using an ionic structure directing agent are described. The aluminum in the structures is stable so that the framework of the structures does not collapse when heated in the presence of water or water vapor (steam). The steam stable aluminosilicates can be used as acid catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other cracking of organic compounds.Type: GrantFiled: April 23, 2002Date of Patent: August 3, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Patent number: 6746748Abstract: A honeycomb structure made of a silicon carbide-based porous body and having a number of through-holes extending in the axial direction, separated by partition walls. The strength and Young's modulus of the silicon carbide-based porous body satisfy the following relation: Strength (MPa)/Young's modulus (GPa)≧1.1. The honeycomb structure contains refractory particles such as silicon carbide particles and the like and yet can be produced at a relatively low firing temperature at a low cost, has a high strength and a high thermal shock resistance, and can be suitably used, for example, as a filter for purification of automobile exhaust gas by a treatment such as plugging of through-channel at its inlet or outlet, or as a catalyst carrier, even under a high SV condition.Type: GrantFiled: August 12, 2002Date of Patent: June 8, 2004Assignee: NGK Insulators, Ltd.Inventors: Shuichi Ichikawa, Takahiro Tomita, Shinji Kawasaki, Hiroaki Sakai
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Patent number: 6746659Abstract: Mesoporous hexagonal, cubic, lamellar, wormhole, or cellular foam aluminosilicates, gallosilicates and titanosilicates derived from protozeolitic seeds using an ionic structure directing agent are described. The silicon and aluminum, gallium or titanium centers in the structures are stable so that the framework of the structure does not collapse when heated in the presence of water or water vapor (steam). The steam stable compositions can be used as catalysts for hydrocarbon conversions, including the fluidized bed catalytic cracking and the hydrocracking of petroleum oils, and other reactions of organic compounds.Type: GrantFiled: February 21, 2001Date of Patent: June 8, 2004Assignee: Board of Trustees of Michigan State UniversityInventors: Thomas J. Pinnavaia, Wenzhong Zhang, Yu Liu
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Publication number: 20040076810Abstract: A composite high temperature insulator (A) includes a planar layer (10) having anisotropic thermal conductivity properties. A second planar layer (12) is formed from a rigid insulation material, such as a carbonized mixture of carbon fibers and a binder. The second layer is coextensive with the first layer and is preferably bonded thereto by a carbonaceous cement (44). When used to insulate a heat source, such as a furnace (50), convective heat is directed back to the source by the reflective surface (16) of the inner, anisotropic layer (10). Heat which enters the anisotropic layer is dissipated evenly through the plane of the layer along a plurality of heat paths defined by a plurality of layers (14) of flexible graphite. Accordingly, heat which reaches the outer, second layer (12) results in fewer hot spots than occur with a conventional rigid insulation material, thereby reducing the total amount of insulation material required to achieve a desired level of thermal insulation.Type: ApplicationFiled: October 17, 2002Publication date: April 22, 2004Applicant: UCAR Carbon Company Inc.Inventors: David P. Blain, Robert E. Smith