Kaolin (e.g., Ball Clay, Fire Clay, Etc.) Containing Patents (Class 501/144)
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Patent number: 9893505Abstract: A configuration for a power supply of a component in an exhaust gas system includes at least one electrical contact disposed at an exhaust gas line. The at least one electrical contact is surrounded by an electrical insulation material.Type: GrantFiled: March 15, 2013Date of Patent: February 13, 2018Assignee: EMITEC Gesellschaft fuer Emissionstechnologie mbHInventors: Rolf Brúck, Jan Hodgson, Christian Vorsmann
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Patent number: 9827457Abstract: The present invention provides compositions and methods for converting hazardous waste glass into safe and usable material. In particular, the present invention provides compositions and methods for producing ceramic products from toxic-metal-containing waste glass, thereby safely encapsulating the metals and other hazardous components within the ceramic products.Type: GrantFiled: November 13, 2013Date of Patent: November 28, 2017Assignee: The Catholic University of AmericaInventors: Hao Gan, Malabika Chaudhuri, Biprodas Dutta, Ian L. Pegg
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Patent number: 8987158Abstract: The present invention relates to a composition for forming a friable-resistant dielectric porcelain material. The present invention also relates to a friable-resistant dielectric porcelain material formed from the composition of the present invention, a method of making a friable-resistant dielectric porcelain material, a friable-resistant dielectric porcelain material formed by the method of the present invention, a dielectric porcelain material comprising a particular composition, and a system for producing ozone using the dielectric porcelain material of to the present invention.Type: GrantFiled: November 16, 2012Date of Patent: March 24, 2015Assignee: Victor Insulators, Inc.Inventor: Ira Knickerbocker
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Patent number: 8765049Abstract: A method of making ceramic articles includes compounding ceramic precursor batch components that include hydrous clay. The hydrous clay includes particle components having a platy geometry. The crystallite size of the platy hydrous clay particle components is greater than a predetermined amount. Controlling such crystallite size can result in reduced shrinkage of green ware during the clay dehydroxylation stage of firing.Type: GrantFiled: April 30, 2012Date of Patent: July 1, 2014Assignee: Corning IncorporatedInventors: David J Bronfenbrenner, Chris Maxwell, Martin Joseph Murtagh, Bryan Ray Wheaton
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Patent number: 8758671Abstract: A method of making ceramic articles includes compounding ceramic precursor batch components that include hydrous clay. The hydrous clay includes particle components having a platy geometry. The crystallite size of the platy hydrous clay particle components is less than a predetermined amount. Controlling such crystallite size can result in fired ceramic articles with a lower coefficient of thermal expansion and improved thermal shock resistance.Type: GrantFiled: April 30, 2012Date of Patent: June 24, 2014Assignee: Corning IncorporatedInventors: Martin Joseph Murtagh, Bryan Ray Wheaton
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Patent number: 8727003Abstract: An ultra-lightweight, high strength ceramic proppant made from mixture of naturally occurring clays, preferably porcelain clay, kaolin and/or flint-clay, earthenware clay or other naturally occurring clays having an alumina content between about 5.5% and about 35%. The proppant has an apparent specific gravity from about 2.10 to about 2.55 g/cc, and a bulk density of from about 1.30 to about 1.50 g/cc. This ultra-lightweight proppant is useful in hydraulic fracturing of oil and gas wells, and has greater conductivity than sand at pressures up to 8,000 psi as measured by Stim-Lab after 50 hours and 275° F. on Ohio Sandstone, in the presence of deoxygenated aqueous 2% solution of KCI.Type: GrantFiled: July 23, 2010Date of Patent: May 20, 2014Assignee: Prop Supply and Service, LLCInventors: Ying Li, Zhijie Huang, Shengming Lin, Wenzhong Wu
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Patent number: 8669199Abstract: The present disclosure relates to cordierite-forming batch materials and methods of using the same, and in particular batch materials for forming porous cordierite bodies suitable for treating engine emissions. The batch materials include sources of magnesium, alumina, silica, and high BET specific surface area raw kaolin clay. In some embodiments, the BET specific surface area of the raw kaolin clay is greater than 22 m2/g. In other embodiments, the BET specific surface area of the raw kaolin clay is greater than 13 m2/g, and the source of magnesium oxide and the source of non-kaolin clay source of silica both have relatively coarse particle size.Type: GrantFiled: June 5, 2009Date of Patent: March 11, 2014Assignee: Corning IncorporatedInventors: Chris Maxwell, Martin Joseph Murtagh
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Patent number: 8614157Abstract: Sintered, substantially round and spherical particles and methods for producing such sintered, substantially round and spherical particles from an alumina-containing raw material and a metal oxide sintering aid. The alumina-containing raw material contains from about 40% to about 55% alumina. Methods for using such sintered, substantially round and spherical particles in hydraulic fracturing operations.Type: GrantFiled: March 25, 2011Date of Patent: December 24, 2013Assignee: CARBO Ceramics, Inc.Inventors: William H. Pope, Chad Cannan, Jimmy C. Wood
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Patent number: 8388750Abstract: Disclosed herein are granulated kaolin compositions exhibiting at least one of improved material handling properties, low dusting during transit, easy make-down into mineral-water slurries, and requiring less energy to produce than spray dried kaolin products. The granulated kaolin compositions may, in one embodiment, be characterized by a moisture content ranging from about 12% to about 23% by weight relative to the total weight of the composition. In another embodiment, the granulated kaolin compositions may have an average granule size of greater than about 10 mesh. Also disclosed herein are granulated kaolin compositions having a moisture content ranging from about 12% to about 23% by weight relative to the total weight of the composition, wherein the composition is friable when subjected to a shear force.Type: GrantFiled: March 20, 2008Date of Patent: March 5, 2013Assignee: Imerys Pigments, Inc.Inventors: Ernest Gay, Jose Messias, Sayre Mender, Robert J. Pruett
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Patent number: 8377560Abstract: A glaze composition which makes it possible that a base material for an inorganic calcined substance containing a lot of vitreous material is glazed without having corrosion. The glaze composition comprises a plastic material, a non-plastic material, and a solvent material, wherein the plastic material comprises at least one material selected from the group consisting of Gairome clay, Kibushi clay, kaolin and talc; the non-plastic material comprises at least one material selected from the group consisting of silica, calcined kaolin, pottery stone, pyrophyllite, pottery shards, chamotte and zircon; and the solvent material comprises at least one material selected from the group consisting of feldspar, lime stone, dolomite, zinc oxide and lithium carbonate.Type: GrantFiled: February 12, 2008Date of Patent: February 19, 2013Assignee: Nichiha CorporationInventor: Takashige Akie
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Patent number: 8304360Abstract: A blend of ball clays for use as the ball clay component of a slip to produce a ceramic sanitary ware item by a slip casting process. The clay blend including 20-50 percent of a fine-grained ball clay with a low carbon content and 45-55 percent of its particles having a size less than 0.5 microns and about 85-95 percent of the particles less than about 20 microns.Type: GrantFiled: January 4, 2010Date of Patent: November 6, 2012Assignee: Unimin CorporationInventors: Victor Manuel Palacios Villanueva, Garry F. Webb
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Patent number: 8283033Abstract: Provided is a ceramic ball, comprising a core portion and a sphere portion; wherein said core portion is made of clinkers and raw materials; said clinkers are made of kaolinite and feldspar, industrial waste ceramics or a combination thereof; said raw materials are made of kaolinite and feldspar; a weight ratio between the clinkers and the raw materials in said core portion is 1-2:2-3; and a weight ratio between said kaolinite and said feldspar is 5-7.5:1-2.5. A method for producing a ceramic ball is also provided. The invention features low energy consumption, good pressure resistant performance, shock resistance property and long lifetime.Type: GrantFiled: December 23, 2008Date of Patent: October 9, 2012Inventor: Feiming Lan
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Patent number: 8242038Abstract: A cement mixture suitable for use with ceramic honeycomb bodies, such as for forming an outer layer on the outer periphery of the honeycomb body, or for forming plugs in the honeycomb body. The cement mixture, when fired, preferably exhibits low coefficient of thermal expansion and high strength. The cement mixture can be applied to a green honeycomb body and simultaneously fired with the green body or can be applied to an already fired ceramic honeycomb body and then fired. Includes cement mixture comprising a plurality of inorganic components comprising talc, kaolin, alumina, silica, and aluminum hydroxide, wherein the mixture contains less than or equal to 18.0% silica and greater than or equal to 17.0% aluminum hydroxide, in percent by weight of the inorganic components.Type: GrantFiled: October 22, 2008Date of Patent: August 14, 2012Assignee: Corning IncorporatedInventors: David A Earl, Tonia Havewala Fletcher, Robert John Paisley, Irene Mona Peterson
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Patent number: 8097078Abstract: An improvement in a mixture for forming into a body that is to be fired into a “whiteware ceramic product” wherein the mixture is a compound of clay and other minerals with a ferric oxide content of less than about 5.0% by weight of the dry mixture. The improvement includes adding to the mixture a binder in the form of a combination of protein and a vegetable flour with an equivalent gram strength of at least 30 grams and a protein content of 20-50% of the binder, where the binder is in the range of 0.05% to 0.50% by weight of the dry mixture.Type: GrantFiled: October 21, 2008Date of Patent: January 17, 2012Assignee: Unimin CorporationInventor: Clayton Collins
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Patent number: 8083848Abstract: Disclosed herein are kaolin compositions, such as beneficiated fine sedimentary kaolin compositions. The beneficiated fine sedimentary kaolins may be obtained from the upper bed of the Rio Capim Kaolin deposit. The compositions may have at least one property chosen from a low iron content and low Hinckley crystallinity index, such as Fe2O3 in an amount less than about 0.8% by weight relative to the total weight of the solids content and wherein the Hinckley crystallinity index of the kaolin is less than about 0.5. Also disclosed are products obtained therefrom, such as paint and paper coating compositions.Type: GrantFiled: February 8, 2006Date of Patent: December 27, 2011Assignee: Imerys Pigments, Inc.Inventors: Robert J. Pruett, Paula R. Alves
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Patent number: 8058198Abstract: A method of producing cordierite ceramic where the degree of stacking faults and the particle diameter of kaolinite used as a component of a cordierite-forming raw material are appropriately adjusted so that microcracks having an average width of 0.3 ?m or more are introduced into the resulting cordierite ceramic to produce a high-quality cordierite ceramic that includes a cordierite crystal oriented in a specific direction and has a porosity of 25% or more and a coefficient of thermal expansion of 0.30×10?6/° C. or less.Type: GrantFiled: March 11, 2009Date of Patent: November 15, 2011Assignee: NGK Insulators, Ltd.Inventors: Satoshi Yamazaki, Yuji Katsuda, Atsushi Watanabe, Yohei Ono, Takehiko Watanabe
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Patent number: 8007586Abstract: A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.Type: GrantFiled: June 23, 2010Date of Patent: August 30, 2011Inventor: Armin Croft Elsaesser
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Patent number: 7915188Abstract: A useable particulate nepheline syenite having a grain size to provide an Einlehner Abrasive Value of less than about 100 is described. The particulate nepheline syenite is generally free from agglomeration and moisture free. At least 99% of the nepheline syenite particles have a size less than 10 microns. In practice, the nepheline syenite grain size is less than about 5 microns and the distribution profile of the particulate system is generally 4-5 microns.Type: GrantFiled: April 4, 2008Date of Patent: March 29, 2011Assignee: Unimin CorporationInventors: Jerry William Janik, Scott Van Remortel
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Patent number: 7825053Abstract: Sintered, spherical composite pellets or particles comprising alumina fines, at least one of clay and bauxite and optionally a sintering aid, are described, along with a process for their manufacture. The use of such pellets in hydraulic fracturing of subterranean formations and in grinding is also described.Type: GrantFiled: January 25, 2010Date of Patent: November 2, 2010Assignee: Carbo Ceramics Inc.Inventors: Robert Duenckel, Mark Edmunds, Steve Canova, Benjamin Eldred, Brett Allen Wilson
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Patent number: 7789960Abstract: A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.Type: GrantFiled: February 3, 2009Date of Patent: September 7, 2010Inventor: Armin Croft Elsaesser
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Publication number: 20100204035Abstract: A blend of ball clays for use as the ball clay component of a slip to produce a ceramic sanitary ware item by a slip casting process. The clay blend including 20-50 percent of a fine-grained ball clay with a low carbon content and 45-55 percent of its particles having a size less than 0.5 microns and about 85-95 percent of the particles less than about 20 microns.Type: ApplicationFiled: January 4, 2010Publication date: August 12, 2010Inventors: Victor Manuel Palacios Villanueva, Garry F. Webb
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Patent number: 7722520Abstract: The compound is a clay aqueous suspension made of at least one 2:1 layer phyllosilicate clay mineral, at least one 1:1 layer phyllosilicate clay mineral, and water that can be used to sequester asbestos, such as chrysotile, as well as dust and other fibrous particles, at all scales of contamination.Type: GrantFiled: June 13, 2008Date of Patent: May 25, 2010Assignee: George Mason UniversityInventors: Mark P. S. Krekeler, Jillian G. Lepp, Cynthia Tselepis, Ryan B. Wantz
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Patent number: 7708957Abstract: A chemical processing apparatus that utilizes a ceramic media sintered at a lower temperature than the apparatus' maximum exposure temperature is described. The media's physical and chemical properties may contribute to its thermal stability when exposed to temperatures that exceed the media's sintering temperature by at least 50° C.Type: GrantFiled: April 7, 2008Date of Patent: May 4, 2010Assignee: Saint-Gobain Ceramics & Plastics Inc.Inventor: John Stewart Reid
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Patent number: 7678723Abstract: Sintered, spherical composite pellets or particles comprising alumina fines, at least one of clay and bauxite and optionally a sintering aid, are described, along with a process for their manufacture. The use of such pellets in hydraulic fracturing of subterranean formations and in grinding is also described.Type: GrantFiled: May 19, 2008Date of Patent: March 16, 2010Assignee: Carbo Ceramics, Inc.Inventors: Robert Duenckel, Mark Edmunds, Steve Canova, Benjamin Eldred, Brett Allen Wilson
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Publication number: 20090239075Abstract: Provided is a ceramic ball, comprising a core portion and a sphere portion; wherein said core portion is made of clinkers and raw materials; said clinkers are made of kaolinite and feldspar, industrial waste ceramics or a combination thereof; said raw materials are made of kaolinite and feldspar; a weight ratio between the clinkers and the raw materials in said core portion is 1-2:2-3; and a weight ratio between said kaolinite and said feldspar is 5-7.5:1-2.5. A method for producing a ceramic ball is also provided. The invention features low energy consumption, good pressure resistant performance, shock resistance property and long lifetime.Type: ApplicationFiled: December 23, 2008Publication date: September 24, 2009Inventor: Feiming LAN
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Publication number: 20090136740Abstract: A composite article includes a substrate and a layer attached to the substrate. The layer includes a metal phase, a first ceramic phase, and a second ceramic phase.Type: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Inventors: George H. Reynolds, Christopher W. Strock
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Patent number: 7534736Abstract: Disclosed herein is ultra-low residue, high solids, wet “cake” kaolin and ultra-low residue, high solids, wet “cake” calcined kaolin products, produced by use of wet screening/non-drying product isolation, which are useful in the manufacture of top size-sensitive applications.Type: GrantFiled: May 25, 2005Date of Patent: May 19, 2009Assignee: Imerys Kaolin, Inc.Inventors: Edward Sare, James Stacey Johnson
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Patent number: 7485186Abstract: A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.Type: GrantFiled: June 17, 2003Date of Patent: February 3, 2009Assignee: American Clay Enterprises, LLCInventor: Armin Croft Elsaesser
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Publication number: 20080300129Abstract: The present invention relates to a method of producing a ceramic material comprising the steps of: a) mixing a first clay composition comprising silica and a silicate mineral with a second clay composition; and b) firing the mixed clay composition from step a) to form a ceramic product. The present invention also relates to an engobe clay composition, sanitary ware and methods of productions thereof.Type: ApplicationFiled: August 4, 2008Publication date: December 4, 2008Applicant: Caroma Insdustries LimitedInventor: Emile Saleh
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Patent number: 7442663Abstract: There is disclosed a ceramic clay obtained by kneading a forming material containing a ceramic forming material, wherein the forming material contains layered double hydroxide, in addition to the ceramic forming material, at a ratio of 0.5 to 50% by mass with respect to a total with the ceramic forming material, and hardness measured by an NGK clay hardness meter is set to 4 to 18 mm. A high-strength honeycomb structure can be obtained capable of preventing or inhibiting pollution and global warming when used in manufacturing a ceramic structure, and having few defects such as cracks.Type: GrantFiled: August 9, 2005Date of Patent: October 28, 2008Assignee: NGK Insulators, Ltd.Inventor: Takahiro Tomita
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Patent number: 7402543Abstract: The present invention relates to a decorative refractory tile and it's method of use. This decorative tile utilizes a specially formulated clay body that undergoes dehydration and vitrification by firing in a specific manner with respect to temperature, time and rate of temperature increase. This thin, refractory tile has a high thermal conductivity, high structural strength able to maintain a minimal of cracking, distortion and spalling under rapid temperature changes and possesses a high resistance to erosion from ash-laden gases encountered in a conventional fireplace. This tile can be colored with heat resistant glazes, stains and oxides and sized or shaped within certain dimensional ranges, so as allow it to present patterns, designs or even pictures on the sides, floor and back of the firebox. When this tile is crafted by one with an artistic flair, and affixed to the walls, floor or sides of a firebox, aesthetically favorable fireplaces can be created.Type: GrantFiled: December 29, 2004Date of Patent: July 22, 2008Inventor: Ruth Frances Greenberg
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Publication number: 20080161179Abstract: A non-porous, non-corrosive, impact-resistant ceramic composition; a method of making the ceramic composition; a method of making a ceramic article from the ceramic composition; and a ceramic article made from the ceramic composition are disclosed; wherein the ceramic composition preferably comprises 40.68 percent by volume of water; 0.57 percent by volume of glucose syrup; 4.52 percent by volume of oak sawdust; 0.57 percent by volume of soda ash; 0.57 percent by volume of sodium silicate; 1.69 percent by volume of corundum; 20.34 percent by volume of Alberta; 20.34 percent by volume of Tennessee ball clay; 4.52 percent by volume of kaolinite; 2.26 percent by volume of feldspar; 2.26 percent by volume of borax; and 1.69 percent by volume of kyanite.Type: ApplicationFiled: March 18, 2008Publication date: July 3, 2008Applicant: CERAMIC CONTAINMENT LLCInventor: Kathleen N. Baker
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Patent number: 7354879Abstract: A chemical processing apparatus that utilizes a ceramic media sintered at a lower temperature than the apparatus' maximum exposure temperature is described. The media's physical and chemical properties may contribute to its thermal stability when exposed to temperatures that exceed the media's sintering temperature by at least 50° C.Type: GrantFiled: January 5, 2006Date of Patent: April 8, 2008Assignee: Saint-Gobain Ceramics & Plastics, Inc.Inventor: John Stewart Reid
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Patent number: 7323429Abstract: A method for pacifying the spent bed material resulting from the synthesis of organohalosilanes and halosilanes by mixing clay with spent bed material. Clay compositions containing at least 10 weight % of clay and spent bed material, as well as ceramic compositions containing spent bed material, are also provided.Type: GrantFiled: December 5, 2001Date of Patent: January 29, 2008Assignee: Dow Corning LimitedInventor: Hagen Demes
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Patent number: 7105466Abstract: A clay slurry with a solids content of at least about 60 weight percent and a casting rate of at least 60 grams per hour, wherein the slurry contains from about 68 to about 74 weight percent of silica and less than about 0.8 percent of carbon. At least about 9 weight percent of the particles in the slurry are larger than about 44 microns, and at least about 5 weight percent of the particles in said slurry are larger than about 74 microns.Type: GrantFiled: July 25, 2005Date of Patent: September 12, 2006Assignee: H.C. Spinks Clay Company, Inc.Inventor: Ronald J. Thomas
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Patent number: 7091148Abstract: A clay slurry with a solids content of at least about 60 weight percent and a casting rate of at least 60 grams per hour, wherein the slurry contains from about 68 to about 74 weight percent of silica and less than about 0.8 percent of carbon. At least about 9 weight percent of the particles in the slurry are larger than about 44 microns, and at least about 5 weight percent of the particles in said slurry are larger than about 74 microns.Type: GrantFiled: July 26, 2004Date of Patent: August 15, 2006Assignee: H.C. Spinks Clay Company, Inc.Inventor: Ronald J Thomas
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Patent number: 6919289Abstract: Methods and compositions are provided for making low temperature sintering ceramic bodies that have very low thermal expansion and low porosity.Type: GrantFiled: October 5, 2004Date of Patent: July 19, 2005Assignee: Carlisle FoodService Products, IncorporatedInventor: Gerard E. Parker
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Patent number: 6872677Abstract: A brick additive and methods for using the brick additive are disclosed. The additive may include an internal porosity. The internal porosity may display an intra-granular internal porosity in which at least some of the pores are interconnected via an open network of pore spaces. In some embodiments, the additive is capable of maintaining its internal porosity after undergoing thermal modification via calcination, for example. In addition, brick additives of the present invention may display a large surface area.Type: GrantFiled: October 2, 2002Date of Patent: March 29, 2005Assignee: Oil Dri CorporationInventors: Verlyn R. Roskam, Marc A. Herpfer, Allan S. Lee
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Patent number: 6846768Abstract: Methods and compositions are provided for making low temperature sintering ceramic bodies that have very low thermal expansion and low porosity.Type: GrantFiled: March 26, 2003Date of Patent: January 25, 2005Assignee: Carlisle FoodService Products, IncorporatedInventor: Gerard E. Parker
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Patent number: 6824877Abstract: A clay composition comprises, in parts by weight on oxide basis, 10-15% Al2O3, 50-85% SiO2, 0-12.5% B2O3 and 10-20% metal oxides of the form RO or R2O.Type: GrantFiled: August 29, 2002Date of Patent: November 30, 2004Inventor: John Howard Groth
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Publication number: 20040067840Abstract: A brick additive and methods for using the brick additive are disclosed. The additive may include an internal porosity. The internal porosity may display an intra-granular internal porosity in which at least some of the pores are interconnected via an open network of pore spaces. In some embodiments, the additive is capable of maintaining its internal porosity after undergoing thermal modification via calcination, for example. In addition, brick additives of the present invention may display a large surface area.Type: ApplicationFiled: October 2, 2002Publication date: April 8, 2004Inventors: Verlyn R. Roskam, Marc A. Herpfer, Allan S. Lee
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Patent number: 6703337Abstract: Ceramic media made using ceramic components comprising from 5 to 60% by weight of spodumene and 95 to 40 wt % of other ceramic-forming components comprising clay and feldspar have a reduced tendency to shrink upon firing to form the media and improved physical properties.Type: GrantFiled: May 15, 2002Date of Patent: March 9, 2004Assignee: Saint-Gobain CorporationInventors: John S. Reid, Thomas Szymanski, Anne Hardy, James Salvatore, Michael J. Mangaudis
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Patent number: 6696377Abstract: A process for preparing a ball clay slurry with a casting rate of at least about 50, a modulus of rupture of at least 500 pounds per square inch, and from about 0.1 to about 1.0 weight percent of organic polyelectrolyte. In this process, a digested lignite material is mixed with a lignitic coarse clay, a nonlignitic coarse clay, a lignitic fine clay, and a polyelectrolyte dispersing agent.Type: GrantFiled: October 18, 2001Date of Patent: February 24, 2004Assignee: H. C. Spinks Clay Company Inc.Inventor: Ronald J. Thomas
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Publication number: 20040029713Abstract: A method for pacifying the spent bed material resulting from the synthesis of organohalosilanes and halosilanes by mixing clay with spent bed material. Clay compositions containing at least 10 weight % of clay and spent bed material, as well as ceramic compositions containing spent bed material, are also provided.Type: ApplicationFiled: May 30, 2003Publication date: February 12, 2004Inventor: Hagan Demes
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Publication number: 20030230217Abstract: A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.Type: ApplicationFiled: June 17, 2003Publication date: December 18, 2003Inventor: Armin Croft Elsaesser
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Patent number: 6475941Abstract: A process is described for producing porcelain, in particular high-strength porcelain and a ceramic insulator. To produce the porcelain, calcined bauxite is used instead of alumina. The simultaneous addition of clay and kaolin, in each case containing more than 5% by weight of foreign metal oxide inclusions, results in a porcelain which, compared to an alumina porcelain of the same mechanical strength, can be produced at significantly lower cost. The porcelain is suitable in particular for applications for highly mechanically loaded components used in electrical insulation.Type: GrantFiled: March 4, 2002Date of Patent: November 5, 2002Assignee: Siemens AktiengesellschaftInventor: Johannes Liebermann
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Publication number: 20020155943Abstract: A process is described for producing porcelain, in particular high-strength porcelain and a ceramic insulator. To produce the porcelain, calcined bauxite is used instead of alumina. The simultaneous addition of clay and kaolin, in each case containing more than 5% by weight of foreign metal oxide inclusions, results in a porcelain which, compared to an alumina porcelain of the same mechanical strength, can be produced at significantly lower cost. The porcelain is suitable in particular for applications for highly mechanically loaded components used in electrical insulation.Type: ApplicationFiled: March 4, 2002Publication date: October 24, 2002Inventor: Johannes Liebermann
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Patent number: 6420292Abstract: This invention relates to a method for treating various kinds of drain water and waste liquid which treatment now becomes a problem, for example, drain water and waste liquid containing hardly removable phosphorus and nitrogen, waste liquid containing organochlorine compounds such as tetrachloroethylene, etc., excretive drain water from a piggery containing organonitrogen compounds at a high level, waste liquid containing heavy metals such as lead, hexavalent chromium, cadmium and the like, drain water from dairy product plants, fishery processing plants, slaughterhouses, etc. which contains water soluble protein at a high level, drain water from pulp plants, photo developing waste liquid, car wash drain water containing a mixture of car polishing wax and detergent and the like by the use of porous ceramics provided with amorphous pore surfaces.Type: GrantFiled: February 29, 2000Date of Patent: July 16, 2002Assignee: Shun'ichi KumaokaInventor: Shun'ichi Kumaoka
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Patent number: 6290771Abstract: The activated kaolin powder compound is prepared from naturally-existing kaolin (hereinafter “natural kaolin”). The activated kaolin powder compound is prepared by heating natural kaolin to 480° C. within at most one hour, calcinating the heated natural kaolin at high temperature by heating in the range of 800˜950° C. over at least 15 minutes, quenching the calcinated kaolin with water or air, and pulverizing the quenched activated kaolin to give powder having particle sizes of 2 &mgr;m or less, wherein the natural kaolin is primarily composed of halloysite (Al2O3.2SiO2.4H2O). The activated kaolin powder compound is employed in an amount of about 5 to 15% by weight of cement for preparing mortar or cement. The cement composition containing the activated kaolin powder compound can provide a mortar or concrete having excellent properties in compressive strength, flexural strength and water permeability.Type: GrantFiled: March 9, 1999Date of Patent: September 18, 2001Inventors: Moon Han Kim, Hey Zoo Hwang, Jung Ha Hwang, Hee Sung Cha, Kwang Choon Kim, Jong Kuk Lee
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Patent number: 6251814Abstract: This invention provides a light-weight pottery article with lower specific gravity than that of general pottery as well as a process for producing the same. The light-weight pottery article of the invention is produced by adding a lightening agent to clay based on silica and alumina, forming the resulting kneaded material into a desired form and calcinating the formed material, wherein the lightening agent is microspherical hollow ceramic powder having a hollow structure based on silica and alumina, the surface of said hollow ceramic powder is coated with an inorganic coating layer based on a silicate compound (e.g. sodium silicate, potassium silicate etc.), said hollow ceramic powder is contained in such a state as to be uniformly dispersed at a proportion of 20 to 80% by weight in the base materials, and in said base materials there is a structure in which the neighboring hollow ceramic powders have been integrated with one another via said inorganic coating layer.Type: GrantFiled: January 26, 2000Date of Patent: June 26, 2001Inventor: Tadashi Kawai