Aluminum Compound (e.g., Clay, Aluminium Oxide, Etc.) Patents (Class 501/127)
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Patent number: 11652201Abstract: A porous reduced silica fiber material has a diameter of about 0.1 to about 20 microns and a surface area of about 5 m2/g to about 400 m2/g. The porous reduced fiber material may be used to form an electrode having a high capacity and improved cycle life over comparable commercial silicon electrodes.Type: GrantFiled: July 2, 2021Date of Patent: May 16, 2023Assignee: UNIFRAX I LLCInventors: Bruce K. Zoitos, Adam Kelsall, Jonathan Cross, Chad Cannan
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Patent number: 11383405Abstract: A method for producing a ceramic molded body, the method including: a molding step of subjecting a ceramic molding material to extrusion molding using an extrusion molding machine equipped with a temperature control portion to provide a ceramic molded body; a cutting step of cutting the ceramic molded body to have a predetermined length; and a dimension measuring step of measure a dimension of the cut ceramic molded body. A relationship between a temperature of the temperature control portion and the dimension of the cut ceramic molded body is previously obtained, and based on the relationship, an appropriate temperature of the temperature control portion is calculated from the dimension of the ceramic molded body measured in the dimension measuring step, and the temperature control portion is controlled to the appropriate temperature in the molding step.Type: GrantFiled: December 29, 2020Date of Patent: July 12, 2022Assignee: NGK Insulators, Ltd.Inventors: Keita Ito, Yuichi Tajima, Yoshimasa Kondo
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Patent number: 11142486Abstract: In one inventive concept, a product includes a three dimensional ceramic structure having an open cell structure with a plurality of pores, wherein the pores connect through the ceramic structure from one side of the ceramic structure to an opposite side of the ceramic structure.Type: GrantFiled: February 9, 2018Date of Patent: October 12, 2021Assignee: Lawrence Livermore National Security, LLCInventors: Patrick Campbell, Maira Ceron Hernandez, Marcus A. Worsley
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Patent number: 11040887Abstract: Alumina is generally used as an inorganic filler, while spinel, which is known to be lower in thermal conductivity than alumina, is used in applications such as gems, fluorescence emitters, catalyst carriers, adsorbents, photocatalysts and heat-resistant insulating materials, but not expected to be used as a thermally conductive inorganic filler. Thus, an object of the invention is to provide spinel particles having excellent thermal conductive properties. The invention relates to a spinel particle including magnesium, aluminum and oxygen atoms and molybdenum and having a [111] plane crystallite diameter of 220 nm or more.Type: GrantFiled: June 23, 2016Date of Patent: June 22, 2021Assignee: DIC CorporationInventors: Hironobu Oki, Kazuo Itoya, Masaki Iida, Jian-Jun Yuan, Hiroshi Kinoshita
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Patent number: 11008260Abstract: A corrosion resistant member has a portion to be exposed to a corrosive gas. The portion to be exposed to the corrosive gas is formed of a ceramic sintered body. The mean width (Rsm) of profile elements of a surface of the ceramic sintered body is 25 ?m or less, and the ratio (Rsm/Ra) of the mean width (Rsm) of the profile elements to the arithmetic mean roughness (Ra) of the surface of the ceramic sintered body is 4,000 or less.Type: GrantFiled: March 25, 2020Date of Patent: May 18, 2021Assignee: NGK SPARK PLUG CO., LTD.Inventors: Keisuke Sato, Tomoyuki Asano
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Patent number: 10800967Abstract: Provided is a ceramic composition capable of achieving a light scattering function while maintaining optical properties at a high level. The ceramic composition comprises a fluorescence phase comprising a fluorescent material and a light-scattering phase comprising a lanthanum oxide. The lanthanum oxide may be, for example, at least one selected from LaAlO3 and La2O3. The ratio of the fluorescent material (or the fluorescence phase) to the lanthanum oxide (or the light-scattering phase), the former/the latter, may be 99.9/0.1 to 50/50 in terms of volume ratio.Type: GrantFiled: December 5, 2017Date of Patent: October 13, 2020Assignee: Konoshima Chemical Co., Ltd.Inventors: Takagimi Yanagitani, Katsuhiro Muramatsu, Atsuko Endo, Kazunari Shiota
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Patent number: 10633290Abstract: High strength transparent corundum ceramics using corundum powder and methods of manufacture are disclosed. The method of forming transparent corundum ceramics includes milling corundum powder in aqueous slurry with beads. The method further includes processing the slurry by a liquid shaping process to form a gelled body. The method further includes sintering the gelled body in air and pressing the gelled body by hot isostatic pressing to form a ceramic body.Type: GrantFiled: September 11, 2015Date of Patent: April 28, 2020Assignees: King Abdulaziz City for Science and Technology, Fraunhofer-GesellschaftInventors: Mohammed A. Binhussain, Akeel Khalid Alakeel, Majid Mohammed Binmajid, Jens Klimke
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Patent number: 10611688Abstract: The invention relates to uniformed concrete comprising, in percentages by weight, (d) 87% to 98% of particles comprising more than 90 wt.-% alumina, (c) 1% to 7% silica fume particles, (f) 1% to 8% particles of a hydraulic cement, the fraction of said particles having a size less than 40 ?m being distributed as follows, in percentage by weight in relation to the weight of the unformed concrete: fraction <0.5 ?m: ?4%, fraction <2 ?m: ?5%, fraction <10 ?m: ?19%, fraction <40 ?m: 34%-52%, fraction between 2 ?m and 40 ?m: 26.5%-34%, the concentration of Zro2, in percentage by weight on the basis of the uniformed concrete, being less than 2%, and the concentration of organic fibres, in percentage by weight on the basis of the uniformed concrete, being less than or equal to 0.03%.Type: GrantFiled: March 6, 2013Date of Patent: April 7, 2020Assignee: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventor: Thierry Claude Consales
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Patent number: 10611692Abstract: A polycrystalline ceramic solely formed based on alumina, on chromium oxide and on magnesium oxide, where the polycrystalline ceramic contains between 0.8% and 1.2% of chromium oxide by total weight of the polycrystalline ceramic and between 0.03% and 0.09% of magnesium oxide by total weight of the polycrystalline ceramic, making it possible to obtain a red ceramic with a toughness (Kc) at least equal to 2.8 MPa·m1/2.Type: GrantFiled: March 9, 2017Date of Patent: April 7, 2020Assignees: The Swatch Group Research and Development Ltd, EMPA, Swiss Federal Laboratories for Materials Testing and ResearchInventors: Henning Luebbe, Roman Kubrin, Gurdial Blugan, Jakob Kuebler, Stewes Bourban, Arnaud Actis-Datta
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Patent number: 10590041Abstract: A refractory object can include at least approximately 10 wt % Al2O3 and at least approximately 1 wt % SiO2. In an embodiment, the refractory object can include an additive. In a particular embodiment, the additive can include TiO2, Y2O3, SrO, BaO, CaO, Ta2O5, Fe2O3, ZnO, or MgO. The refractory object can include at least approximately 3 wt % of the additive. In an additional embodiment, the refractory object can include no greater than approximately 8 wt % of the additive. In a further embodiment, the creep rate of the refractory object can be at least approximately 1×10?6 h?1. In another embodiment, the creep rate of the refractory object can be no greater than approximately 5×10?5 h?1. In an illustrative embodiment, the refractory object can include a glass overflow trough or a forming block.Type: GrantFiled: January 12, 2018Date of Patent: March 17, 2020Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Olivier Citti, Julien P. Fourcade, Andrea L. Kazmierczak
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Patent number: 10526492Abstract: Disclosed are methods for forming boron nitride-containing aggregates that exhibit improved wear by attrition, and resulting filled polymers that exhibit significantly improved thermal conductivity. The boron nitride-containing aggregates are prepared according to a method that includes wet granulating boron nitride powder with a granulation solution to form wet boron nitride-containing granules; and drying the wet boron nitride-containing granules to cause evaporation of solvent in the granulation solution, thereby forming boron nitride-containing granules. Sintering achieves the desired boron nitride-containing aggregates.Type: GrantFiled: May 30, 2017Date of Patent: January 7, 2020Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Elodie Bahon, Pierre-Loup Judas, Nabil Nahas
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Patent number: 10407350Abstract: Refractory composite material based on Al2O3 in the form of corundum, SiO2 in the form of quartz and sodium aluminate having the formula NaAl11O17 or Na2O— 11Al2O3, method for preparing the same, use thereof for preparing manufactured items, as well as manufactured items made thereby and use thereof.Type: GrantFiled: July 8, 2016Date of Patent: September 10, 2019Assignee: BIGARAN S.r.l.Inventor: Gian Luigi Cattaneo
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Patent number: 10336937Abstract: Disclosed here is a method for making a monolithic rare earth oxide (REO) aerogel, comprising: preparing a reaction mixture comprising at least one rare earth metal nitrate, at least one epoxide, at least one base catalyst, and at least one organic solvent; curing the mixture to produce a wet gel; drying the wet gel to produce a dry gel; and thermally annealing the dry gel to produce the monolithic REO aerogel. Also disclosed is an REO aerogel comprising a network of REO nanostructures, wherein the REO aerogel is a monolith having at least one lateral dimension of at least 1 cm, wherein the REO aerogel has a density of about 40-500 mg/cm3 and/or a BET surface area of at least about 20 m2/g, and wherein the REO aerogel is substantially free of oxychloride.Type: GrantFiled: March 17, 2016Date of Patent: July 2, 2019Assignee: Lawrence Livermore National Security, LLCInventors: Marcus A. Worsley, Alexander E. Gash, Robert A. Reibold
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Patent number: 10316404Abstract: A sputtering target including an oxide with a low impurity concentration is provided. Provided is a method for manufacturing a sputtering target, including a first step of preparing a mixture including indium, zinc, an element M (the element M is aluminum, gallium, yttrium, or tin), and oxygen; a second step of raising a temperature of the mixture from a first temperature to a second temperature in a first atmosphere containing nitrogen at a concentration of higher than or equal to 90 vol % and lower than or equal to 100 vol %; and a third step of lowering the temperature of the mixture from the second temperature to a third temperature in a second atmosphere containing oxygen at a concentration of higher than or equal to 10 vol % and lower than or equal to 100 vol %.Type: GrantFiled: December 16, 2015Date of Patent: June 11, 2019Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yoshinori Yamada, Masashi Oota
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Patent number: 9894763Abstract: It is provided an insulating substrate including through holes 2 for conductors arranged in the insulating substrate. A thickness of the insulating substrate is 25 to 300 ?m , and a diameter of the through hole is 20 to 100 ?m . The insulating substrate is composed of an alumina sintered body. A relative density and an average grain size of the alumina sintered body is 99.5 percent or higher and 2 to 50 ?m , respectively.Type: GrantFiled: August 17, 2015Date of Patent: February 13, 2018Assignee: NGK INSULATORS, LTD.Inventors: Tatsuro Takagaki, Yasunori Iwasaki, Sugio Miyazawa, Akiyoshi Ide, Hirokazu Nakanishi
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Patent number: 9873182Abstract: A grinding tool includes a body having a first layer. The first layer can include bond material that is at least about 20 vol % of a total volume of the first layer. Additionally, the first layer can include abrasive particles contained within the bond material. In an embodiment, the abrasive particles include a first type of abrasive particle including black alumina with at least about 10 vol % of a total volume of the abrasive particles including black alumina. In some instances, the grinding tool can include a second layer that includes black alumina.Type: GrantFiled: July 29, 2013Date of Patent: January 23, 2018Assignees: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFSInventors: Dashi Nie, Shenglan Huang, Gaoxiang Gou
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Patent number: 9873184Abstract: A cutting wheel includes a body having a bond material. The bond material comprises at least about 31 vol % of a total volume of the body. Additionally, the body includes abrasive particles contained within the bond material. The abrasive particles include a first type of abrasive particle including black alumina with at least about 10 vol % of a total volume of the abrasive particles including black alumina. In some instances the cutting wheel can include a chop saw, while in other situations, the cutting wheel can include a cut-off wheel.Type: GrantFiled: July 29, 2013Date of Patent: January 23, 2018Assignees: SAINT-GOBAIN ABRASIVES, INC., SAINT-GOBAIN ABRASIFSInventors: Dashi Nie, Shenglan Huang, Gaoxiang Gou
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Patent number: 9751281Abstract: The inorganic fiber molded body of the present invention is characterized in that the molded body has an extremely light weight, and is free from problems such as scattering of fibers and particulate matters from a surface thereof and environmental pollution such as generation of harmful gases. In addition, the present invention provides an inorganic fiber molded body that is excellent in not only thermal shock resistance and mechanical shock resistance but also a high-speed wind erosion resistance, well-balanced in properties and can be used in the applications of various heat-insulating materials. The present invention relates to an inorganic fiber molded body comprising inorganic fibers and inorganic binder particles and having at least one set of a high-fiber density region and a low-fiber density region, in which a ratio of a content of the binder particles in the high-fiber density region to a content of the binder particles in the low-fiber density region as measured by a predetermined method is 0.Type: GrantFiled: March 6, 2014Date of Patent: September 5, 2017Assignee: Mitsubishi Chemical CorporationInventors: Tsuyoshi Fukui, Toshio Ito, Yusaku Hata, Hisashi Aoyagi, Hidetaka Ito
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Patent number: 9714185Abstract: A refractory object can include at least 10 wt % Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0×10?5 ?m/(?m×hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al—Si—Mg glass sheet. In a particular embodiment, a layer including Mg—Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al—Si—Mg glass sheet.Type: GrantFiled: June 12, 2015Date of Patent: July 25, 2017Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Olivier Citti, Andrea L. Kazmierczak
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Patent number: 9670099Abstract: A thermal spray powder of the present invention contains a rare earth element and a group 2 element, which belongs to group 2 of the periodic table. The thermal spray powder, which contains a rare earth element and a group 2 element, is formed, for example, from a mixture of a rare earth element compound and a group 2 element compound or from a compound or solid solution containing a rare earth element and a group 2 element. The thermal spray powder may further contain a diluent element that is not a rare earth element or a group 2 element and is not oxygen, which is at least one element selected, for example, from titanium, zirconium, hafnium, vanadium, niobium, tantalum, zinc, boron, aluminum, gallium, silicon, molybdenum, tungsten, manganese, germanium, and phosphorus.Type: GrantFiled: September 26, 2012Date of Patent: June 6, 2017Assignees: FUJIMI INCORPORATED, TOKYO ELECTRON LIMITEDInventors: Hiroaki Mizuno, Junya Kitamura, Yoshiyuki Kobayashi
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Patent number: 9598620Abstract: An abrasive article includes a body having abrasive particles contained within a bond material. The abrasive particles can include a majority content of silicon nitride and a minority content of sintering material including at least two rare-earth oxide materials. In an embodiment, the rare-earth oxide materials can include Nd2O3 and Y2O3. In a particular embodiment, the abrasive particles comprise a content (wt %) of Nd2O3 that is greater than a content of Y2O3 (wt %).Type: GrantFiled: January 16, 2015Date of Patent: March 21, 2017Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Guan Wang, Vimal K. Pujari, Yves Boussant-Roux
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Patent number: 9458523Abstract: An improved filter is described which is particularly suitable for filtering molten metal. The filter has a porous open celled ceramic foam body with voids separated by struts wherein a portion of the struts are densified with glass.Type: GrantFiled: August 24, 2010Date of Patent: October 4, 2016Assignee: Porvair PlcInventors: Rudolph A. Olson, III, Matthew W. Willer, Leonard S. Aubrey
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Patent number: 9446396Abstract: The present invention relates to petrochemistry and gas chemistry, and discloses a support for catalysis of exothermic processes, particularly the Fischer-Tropsch process, methanol synthesis, hydrogenation and purification of exhaust gases. The support comprises metallic aluminum in the form of a mixture of dispersed powders of flaky and spherical aluminum and the support is in the form of pellets, preferably cylinders, tablets, balls, obtained by extrusion, pelletization, tabletting, rounding or liquid molding. The catalyst prepared on the support comprises an active metal selected from the group consisting of Co, Fe, Ni, Ru, Rh, Pt, Pd, Cu and mixtures thereof.Type: GrantFiled: August 3, 2010Date of Patent: September 20, 2016Assignee: INFRA XTL TECHNOLOGY LIMITEDInventors: Vladimir Zalmanovich Mordkovich, Lilia Vadimovna Sineva, Igor Grigorievich Solomonik, Vadim Sergeevich Ermolaev, Eduard Borisovich Mitberg
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Patent number: 9212302Abstract: Method for producing zirconia-reinforced Al2O3 grains, including at least the following steps: inductively melting a starting mixture to form a eutectic melt made of alumina and zirconia; applying the eutectic melt as a thin layer material, the thin layer material being quenched; and removing the thin layer material. In this manner abrasive grains can be formed directly or the thin layer material can be classified when it is broken into abrasive grains, the grains are polycrystalline without amorphous glass phases as an alumina matrix having zirconia precipitations, and at least some of the zirconia precipitations can be formed in the nanoscale range.Type: GrantFiled: April 8, 2013Date of Patent: December 15, 2015Assignee: VSM•Vereinigte Schmirgel-und Maschinen-Fabriken AGInventors: Gerd Fischer, Clemens Megerle, Wolfgang Falz
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Patent number: 9175439Abstract: A chemical reactor and a method for arranging a ceramic barrier in a gasifying reactor, which reactor is arranged to convert high energy organic waste of black liquor type with a large amount of organic or inorganic alkali metal compounds, by high temperature oxidation with air or oxygen, whereby the organic waste is converted to a hot reducing gas containing a considerable amount of water vapour and the inorganic compounds form an alkali-containing salt melt at a temperature of 750-1150° C.Type: GrantFiled: September 6, 2006Date of Patent: November 3, 2015Assignee: CHEMREC AKTIEBOLAGInventor: Ragnar Tegman
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Patent number: 9120704Abstract: A dielectric layer for an electrostatic chuck is formed of a ceramic material having a first phase including aluminum oxide and a second phase including composite carbonitride (Ti, Me)(C, N) that contains titanium as fine grains. The Me represents a transition element and metals of Group 4 to Group 6 such as Mo and W. The ceramic material that includes the second phase by 0.05 vol % to 2.5 vol % has a volume resistivity value of about 108 to 1013 (?·cm) necessary for a Johnsen-Rahbek type electrostatic chuck.Type: GrantFiled: October 15, 2013Date of Patent: September 1, 2015Assignees: Nippon Tungsten Co., Ltd., Shinko Electric Industries Co., Ltd., Trek Holding Co., Ltd., Japan Fine Ceramics CenterInventors: Kouta Tsutsumi, Mitsuyoshi Nagano, Koki Tamagawa, Norio Shiraiwa, Tadayoshi Yoshikawa, Miki Saito, Toshio Uehara, Hideaki Matsubara, Tetsushi Matsuda
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Patent number: 9073773Abstract: A refractory object can include at least 10 wt % Al2O3. In an embodiment, the refractory object can further include a dopant including an oxide of a rare earth element, Ta, Nb, Hf, or any combination thereof. In another embodiment, the refractory object may have a property such that the averaged grain size does not increase more than 500% during sintering, an aspect ratio less than approximately 4.0, a creep rate less than approximately 1.0×10?5 ?m/(?m×hr), or any combination thereof. In a particular embodiment, the refractory object can be in the form of a refractory block or a glass overflow forming block. The glass overflow forming block can be useful in forming an Al—Si—Mg glass sheet. In a particular embodiment, a layer including Mg—Al oxide can initially form along exposed surfaces of the glass overflow forming block when forming the Al—Si—Mg glass sheet.Type: GrantFiled: March 9, 2012Date of Patent: July 7, 2015Assignee: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventors: Olivier Citti, Andrea Kazmierczak
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Patent number: 9061930Abstract: A device selected from among a glass furnace and a channel for dispensing the glass comprising a block and/or a coating made of a sintered material obtained by sintering a particular mixture comprising a chromium oxide content, indicated as “CrT”, of between 10% and 82%. The die fraction is such that 0.39·(CrT)+24<CrM<0.39·(CrT)+52, CrM denoting the chromium oxide content by weight of the die fraction in wt % on the basis of the oxides of the die, and the aggregate is such that xII?97%, xIII?70%, and xIV?xIII?70%, CrG denoting the chromium oxide content by weight of one grain in wt % on the basis of the oxides of said grain.Type: GrantFiled: July 22, 2011Date of Patent: June 23, 2015Assignee: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Cyril Linnot, Lionel Moitrier, Yves Marcel Leon Boussant Roux, Olivier Citti, Richard Avedikian
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Patent number: 9061271Abstract: A ceramic body based on an aluminum titanate system has the following composition: i) approximately >95% by weight Al2O3.TiO2; ii) approximately 0.1-approximately 5.0% by weight SiO2; iii) approximately 0.1-approximately 5.0% by weight MgO; iv) approximately 0-approximately 2.0% by weight Fe2O3; v) approximately 0-approximately 1.0% by weight BeO, BaO or CaO; vi) approximately 0-approximately 1.0% by weight Li2O, Na2O or K2O; vii) approximately 0-approximately 2% by weight impurities. The ceramic body has a mass ratio TiO2:Al2O3 that is in a range between approximately 0.75 and approximately 0.95.Type: GrantFiled: July 25, 2013Date of Patent: June 23, 2015Assignee: Mann+Hummel GmbHInventors: Jochen Linhart, Frank Ehlen
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Patent number: 8993466Abstract: The invention relates to an alumina-based opaque ceramic, similar to ruby and having a high toughness. This ceramic comprises, by weight: 0.4% to 5% of at least from one oxide of a metal chosen from chromium, cobalt, nickel, manganese, vanadium, titanium and iron; 0.00080 to 0.5% of magnesium oxide; and 0.05 to 6% of at least one oxide of an element of the group of rare earths. The ceramic is applicable in particular in jewelry, fine jewelry and watch making. The invention also relates to methods of preparing such a ceramic.Type: GrantFiled: April 1, 2011Date of Patent: March 31, 2015Assignee: Rolex S.A.Inventors: Ollivier Pujol, Isabelle Rigot
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Patent number: 8962507Abstract: The invention relates to a composition, which comprises a particulate mixture of: (i) 25 to 80% calcined clay; (ii) 5 to 70% fluxing component; and (iii) 5 to 70% filler component.Type: GrantFiled: June 7, 2011Date of Patent: February 24, 2015Assignee: University of the West of England, BristolInventors: David Huson, Stephen Hoskins
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Publication number: 20150044444Abstract: A thermal barrier coating that includes a YAG-based ceramic is prepared by a solution precursor plasma spray method that includes injecting a precursor solution into a thermal jet, evaporating solvent from the precursor solution droplets, and pyrolyzing the resulting solid to form a YAG-based ceramic that is melted and deposited on a substrate. The thermal barrier coating can include through-coating-thickness cracks that improve the strain tolerance of the coating.Type: ApplicationFiled: April 22, 2013Publication date: February 12, 2015Inventors: Maurice Gell, Eric Jordan, Jeffrey Roth
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Patent number: 8940187Abstract: Provided are a ceramic composite for light conversion, which is capable of maintaining a high radiant flux even when the proportion of Gd and Ce is increased to tune the fluorescence peak wavelength to the longer wavelength side, a process for producing the ceramic composite, and a light emitting device including the ceramic composite.Type: GrantFiled: March 14, 2011Date of Patent: January 27, 2015Assignee: UBE Industries, LtdInventors: Hideki Ohtsubo, Shin-Ichi Sakata, Shinichi Ishitobi, Yasuyuki Ichizono, Norifumi Miyamoto, Hisayoshi Iba
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Patent number: 8932971Abstract: A material composed of a large fraction of aluminum oxide, zirconium oxide and strontium aluminate.Type: GrantFiled: April 25, 2008Date of Patent: January 13, 2015Assignee: CeramTec GmbHInventors: Meinhard Kuntz, Peter Schröter, Wolfgang Jaschinski, Volker Sommer
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Patent number: 8901022Abstract: The invention relates to a powder comprising more than 70% of refractory particles, in weight percent relative to the weight of the powder, a particle of said powder being classed in the fraction called “matrix” or in the fraction called “aggregate”, according to whether it is smaller than, or equal to 100 ?m, or larger than 100 ?m, respectively, said powder comprising, in weight percent relative to the weight of the powder: between 0.1% and 18% of particles of a heat-activatable binder, called “heat-activatable binder particles”; and more than 40% of refractory particles, called “ATZ particles”, having the following chemical composition, in weight percentages on the basis of the oxides of said ATZ particles: 10%?Al2O3?55%; 35%?TiO2?80%; 1%?MgO+Cr2O3?10%; 8%?ZrO2?20%; SiO2?8%.Type: GrantFiled: December 23, 2010Date of Patent: December 2, 2014Assignee: Saint0Gobain Centre de Recherches et d'Etudes EuropeenInventors: Olivier Jean Francy, Eric Jorge
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Patent number: 8871312Abstract: Specialty ceramic materials which resist corrosion/erosion under semiconductor processing conditions which employ a corrosive/erosive plasma. The corrosive plasma may be a halogen-containing plasma. The specialty ceramic materials have been modified to provide a controlled electrical resistivity which suppresses plasma arcing potential.Type: GrantFiled: September 10, 2012Date of Patent: October 28, 2014Assignee: Applied Materials, Inc.Inventors: Jennifer Y. Sun, Kenneth S. Collins, Ren-Guan Duan, Senh Thach, Thomas Graves, Xiaoming He, Jie Yuan
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Patent number: 8859446Abstract: A method for producing an ? alumina sintered body for the production of a sapphire single crystal characterized in that a relative density is 60% or more, a closed porosity is 10% or less, a purity is 99.99% by mass or more, each content of Si, Na, Ca, Fe, Cu and Mg is 10 ppm or less, and a volume is 1 cm3 or more, and the ? alumina sintered body can be obtained by mixing 100 parts by weight of an ? alumina with 1 part by weight or more and 20 parts by weight or less of an ? alumina precursor to obtain a mixture, forming a compact from the obtained mixture, and firing the obtained compact.Type: GrantFiled: December 30, 2011Date of Patent: October 14, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Hirotaka Ozaki, Shinji Fujiwara
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Publication number: 20140302978Abstract: A mullite body comprising: a plurality of crystals, wherein about 70 percent or greater of the crystals have a crystal diameter that is within about 3 microns or less of an average diameter of the plurality of crystals, and a porosity of 55 percent or greater; and made using a process comprising: mixing precursor materials together with an average aggregate particle size of about 3 microns or smaller measured using a particle size analyzer; heating greenware in air to a first temperature such that the greenware is dried and forms calcineware, heating the calcineware in a silicon tetrafiouride atmosphere to form flurotopaz, and heating to a second temperature so that a mullite structure is formed.Type: ApplicationFiled: April 9, 2012Publication date: October 9, 2014Inventors: Aleksander J. Pyzik, Nicholas M. Shinkel
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Patent number: 8853114Abstract: The invention is to provide an aluminum titanate-based ceramics showing a good mechanical strength. The invention is an aluminum titanate-based ceramics obtained by firing a starting material mixture which contains a titanium element and an aluminum element, and further contains a chromium element and/or a tungsten element. Preferably, a content of a chromium source which contains the chromium element is from 0.001 to 5 parts by mass, and a content of a tungsten source which contains the tungsten element is from 0.001 to 1.0 part by mass relative to 100 parts by mass of the starting material mixture.Type: GrantFiled: February 16, 2010Date of Patent: October 7, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Kentaro Iwasaki, Akiyoshi Nemoto
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Patent number: 8834588Abstract: The present invention relates to polycrystalline Al2O3 bodies based on melted aluminum oxide having a mean crystallite size of the primary crystals between 20 ?m and 100 ?m and a closed macroporosity between 10% by volume and 30% by volume. The polycrystalline Al2O3 bodies may be obtained by tapping out and quenching a liquid aluminum oxide melt and simultaneous seeding of the pouring stream with seed crystals and can be used advantageously for the production of abrasive materials and refractory products.Type: GrantFiled: August 15, 2011Date of Patent: September 16, 2014Assignee: Center for Abrasives and Refractories Research & Development C.A.R.R.D. GmbHInventor: Sebastian Sachse
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Patent number: 8834833Abstract: Process for preparing an aluminum oxide powder which is present in the form of aggregated primary particles and comprises at least 85% by weight of alpha-aluminum oxide, in which an aluminum oxide powder which a) is present in the form of aggregated primary particles, b) is selected from the group consisting of gamma-aluminum oxide, theta-aluminum oxide, delta-aluminum oxide and/or X-ray amorphous aluminum oxide, and c) has a tamped density of at least 250 g/l, is subject to a heat treatment at 13000 C or more and subsequently milled. Aluminum oxide powder which can be obtained by this process. Aluminum oxide powder in the form of aggregated primary particles having a BET surface area of from 3 to 30 m2/g, in which the proportion of alpha-aluminum oxide is at least 85% by weight and the ratio dgo/dio of the weight distribution of the primary particles is at least 2.8. Use as constituent of fluorescent tubes.Type: GrantFiled: November 17, 2009Date of Patent: September 16, 2014Assignee: Evonik Degussa GmbHInventors: Christian Schulze-Isfort, Christoph Batz-Sohn, Herbert Habermann, Ralph Hofmann
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Publication number: 20140234653Abstract: A thermal spray powder of the present invention contains a rare earth element and a group 2 element, which belongs to group 2 of the periodic table. The thermal spray powder, which contains a rare earth element and a group 2 element, is formed, for example, from a mixture of a rare earth element compound and a group 2 element compound or from a compound or solid solution containing a rare earth element and a group 2 element. The thermal spray powder may further contain a diluent element that is not a rare earth element or a group 2 element and is not oxygen, which is at least one element selected, for example, from titanium, zirconium, hafnium, vanadium, niobium, tantalum, zinc, boron, aluminum, gallium, silicon, molybdenum, tungsten, manganese, germanium, and phosphorus.Type: ApplicationFiled: September 26, 2012Publication date: August 21, 2014Applicants: TOKYO ELECTRON LIMITED, FUJIMI INCORPORATEDInventors: Hiroaki Mizuno, Junya Kitamura, Yoshiyuki Kobayashi
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Patent number: 8778822Abstract: The present invention provides a ceramic porous body for in-vitro and in-vivo use comprising a composition comprising a calcium aluminate (CA) containing phase and optionally at least one of an accelerator, a retarder, a surfactant, a foaming agent, a reactive alumina, water, a fiber, and a biologically active material, and combinations thereof. Ceramic compositions are provides as well as method of using the ceramic compositions and methods of manufacturing a ceramic porous body. The ceramic porous bodies of this invention may be used as artificial bones, joints, in-vitro support structures, and in-vivo support structures for cells, tissues, organs, and nerve growth and regeneration.Type: GrantFiled: August 9, 2010Date of Patent: July 15, 2014Assignee: Cabertech, Inc.Inventor: Kenneth A. McGowan
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Patent number: 8728966Abstract: It is an object to provide an aluminum oxycarbide composition capable of suppressing oxidation of Al4O4C during use to maintain advantageous effects of Al4O4C for a long time. In an aluminum oxycarbide composition comprising Al4O4C crystals, the Al4O4C crystals have an average diameter of 20 ?m or more, based on an assumption that a cross-sectional area of each Al4O4C crystal during observation of the aluminum oxycarbide composition in an arbitrary cross-section thereof is converted into a diameter of a circle having the same area as the cross-sectional area. This aluminum oxycarbide composition can be produced by subjecting a carbon-based raw material and an alumina-based raw material to melting in an arc furnace and then cooling within the arc furnace.Type: GrantFiled: August 31, 2012Date of Patent: May 20, 2014Assignee: Krosakiharima CorporationInventors: Keiichiro Akamine, Joki Yoshitomi
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Patent number: 8675344Abstract: A high energy density multilayer ceramic capacitor, having at least two electrode layers and at least one substantially dense polycrystalline dielectric layer positioned therebetween. The at polycrystalline dielectric layer has an average grain size of less than about 300 nanometers, a particle size distribution of between about 150 nanometers and about 3 micrometers, and a maximum porosity of about 1 percent. The dielectric layer is selected from the group including TiO2, BaTiO3, Al2O3, ZrO2, lead zirconium titanate, and combinations thereof and has a breakdown strength of at least about 1100 kV per centimeter.Type: GrantFiled: March 19, 2012Date of Patent: March 18, 2014Inventor: Fatih Dogan
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Patent number: 8658054Abstract: In order to achieve the object of providing a mixture by means of which, in particular, sintered moldings can be obtained that are virtually free of surface stains produced by soot particles, a mixture is proposed which comprises at least one pressing aid and at least one additive, wherein the additive is selected from a group of substances which have releasable carbon dioxide.Type: GrantFiled: July 12, 2011Date of Patent: February 25, 2014Assignee: GKN Sinter Metals Holding GmbHInventors: Rene Lindenau, Lars Wimbert
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Patent number: 8658552Abstract: A high-chromia refractory, comprised of: about 60% to about 99% by weight of refractory grain, wherein the refractory grain is comprised of grains having about 20% to 100% by weight chromia; 0% to about 35% by weight of a fine particulate, the fine particulate selected from chromic oxide, alumina, ceria, yttria, lanthanum oxide, or combinations thereof; and about 1% to about 8% of a liquid resin or pitch.Type: GrantFiled: December 23, 2009Date of Patent: February 25, 2014Assignee: Harbison-Walker Refractories CompanyInventors: H. David Prior, Glenn H. McIntyre, III
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Patent number: 8617432Abstract: A sintered electroconductive oxide forming a thermistor element has a first crystal phase having a composition represented by RE14Al2O9 and a second crystal phase having a perovskite structure represented by (RE21-aSLa)MO3. The factor a of the second crystal phase is: 0.18<a<0.50, wherein RE1 represents at least one of Yb and Lu and at least one species selected from among group 3A elements excluding Yb, Lu, and La; RE2 represents at least one species selected from among group 3A elements excluding La and which contains at least one species selected from the group RE1; M represents Al and at least one species selected from group 4A to 7A, and 8 elements; and SL represents Sr, Ca, and Mg, with at least Sr being included at a predominant proportion by mole.Type: GrantFiled: February 18, 2010Date of Patent: December 31, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Yasuyuki Okimura, Shinji Ban, Hiroshi Watanbe, Takeshi Mitsuoka
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Patent number: 8617433Abstract: A conductive sintered oxide including: a first crystal phase represented by RE14Al2O9 and a second crystal phase having a perovskite structure represented by (RE21-cSLc)(AlxM1y)O3. RE1 is a first element group consisting of Yb and/or Lu and at least one element selected from Group IIIA elements excluding Yb, Lu and La. RE2 is a second element group consisting of at least one element selected from Group IIIA elements excluding La and including at least one of the elements constituting the first element group RE1. SL is an element group consisting of at least one of Sr, Ca and Mg and which includes Sr as a main element, and M1 is an element group consisting of at least one element selected from Groups IVA, VA, VIA, VIIA and VIII excluding Cr. The coefficient c is in the range of 0.18<c<0.50, and the coefficients x and y are in the range of 0.95?x+y?1.1.Type: GrantFiled: August 16, 2011Date of Patent: December 31, 2013Assignee: NGK Spark Plug Co., Ltd.Inventors: Hiroshi Watanabe, Yasayuki Okimura, Shinji Ban, Takeshi Mitsuoka
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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