Silica Containing Patents (Class 501/133)
  • Patent number: 10526231
    Abstract: A processing technique for production of fused silica for radomes and like elements is described. The processing technique includes forming a mixture of milled silica having an average particle size of about 1 to 5 microns, and a colloidal silica. This mixture is processed to form fused silica having substantially high strength.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: January 7, 2020
    Assignee: Raytheon Company
    Inventors: John Stanley Waugh, Joseph Matthew Wahl
  • Patent number: 9934949
    Abstract: A sputtering target consists of a sintered body having a component composition consisting of: Ga of 10 to 40 at. % and Na of 0.1 to 15 at. % as metal elements; and the balance being Cu and inevitable impurities. The sintered body contains the Na in a form of Na compounds consisting of at least one compound selected from the group consisting of sodium sulfate, sodium sulfite, sodium selenate, and sodium selenite, the sintered body has a composition in which a Na compound phase is dispersed, and an average grain size of the Na compound phase is 10 ?m or less.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: April 3, 2018
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Shoubin Zhang, Keita Umemoto, Masahiro Shoji
  • Patent number: 9725325
    Abstract: A process for preparing precipitated silica comprising a precipitation reaction between silicate and an acid, in which the acid used in at least one of the steps is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: August 8, 2017
    Assignee: Rhodia Operations
    Inventors: Malika Clouin, Sylvaine Neveu, Joël Racinoux
  • Patent number: 9695054
    Abstract: A process for preparing precipitated silicas in which: (i) an aqueous stock with a pH of between 2 and 5 is formed; (ii) silicate and acid are simultaneously added to said stock, such that the pH of the resulting reaction medium is maintained between 2 and 5; (iii) silicate is added until a pH value of between 7 and 10 is obtained; (iv) silicate and acid are simultaneously added, such that the pH of the reaction medium is between 7 and 10; (v) acid is added until a pH value of between 2.5 and 5.3 is obtained; and (vi) the reaction medium is placed in contact with acid and silicate, such that the pH is between 2.5 and 5.3; wherein the acid used in at least one of the process steps is a concentrated acid.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: July 4, 2017
    Assignee: Rhodia Operations
    Inventors: Emmanuelle Allain, Sylvaine Neveu
  • Patent number: 9695053
    Abstract: The invention relates to a process for the preparation of precipitated silica formed of aggregates of large primary silica particles, at the surface of which occur small primary silica particles, in which the acid used in at least one of the process steps is a concentrated acid.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: July 4, 2017
    Assignee: Rhodia Operations
    Inventors: Emmanuelle Allain, Sylvaine Neveu
  • Patent number: 9518485
    Abstract: Disclosed is a honeycomb catalyst support structure comprising a honeycomb body and an outer layer or skin formed of a cement comprising an amorphous glass powder with a multimodal particle size distribution applied to an exterior surface of the honeycomb body. The multimodal particle size distribution is achieved through the use of a first glass powder having a first median particle size and at least a second glass powder having a second median particle size. In some embodiments, the first and second glass powders are the same amorphous glass consisting of fused silica. The cement may further include a fine-grained, sub-micron sized silica in the form of colloidal silica. The cement exhibits a coefficient of thermal expansion less than 15×10?7/° C., and preferably about 5×10?7/° C. after drying.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: December 13, 2016
    Assignee: CORNING INCORPORATED
    Inventors: Thomas Richard Chapman, Linda Jane Ingersoll, Patrick David Tepesch
  • Patent number: 9502491
    Abstract: A multilayer capacitor is provided that includes a plurality of vias configured to receive interconnects from a die.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: November 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Young Kyu Song, Kyu-Pyung Hwang, Dong Wook Kim, Changhan Hobie Yun
  • Patent number: 8975201
    Abstract: A matrix for a thermostructural fibrous composite material obtained by geopolymer synthesis based on nanocrystalline cristobalite resulting from the crystallization of geopolymer micelles of potassium polysiloxonate K—(Si—O—Si—O)n. The nanocrystalline cristobalite is in the form of micelles and/or microspheres having dimensions of less than 1 micron, preferably of less than 500 nanometers, connected together by an amorphous phase. The matrix contains at least 85 percent by weight of oxide SiO2 with at most 15%, preferably at most 10%, by weight of alkali metal oxide K2O. The nanocrystalline cristobalite results from the crystallization of geopolymer micelles of potassium polysiloxonate by a heat treatment at a temperature preferably between 600° C. and 800° C., for a time of less than 30 minutes. The fibrous composite material impregnated with this matrix is thermostructural.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: March 10, 2015
    Assignee: Pyromeral Systems, S.A.
    Inventor: M. Michel Davidovics
  • Patent number: 8871664
    Abstract: Provided is a manufacturing method for a refractory filler, comprising melting a raw material batch and cooling the resultant melt to precipitate willemite as a main crystal phase.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: October 28, 2014
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Tomoko Enomoto, Hiroyuki Okamura, Nobutoshi Ito
  • Patent number: 8784979
    Abstract: In a thermally sprayed, gastight protective layer for metal substrates, such as Fe, Ni, Al, Mg and/or Ti, the spray powder for the purpose includes at least two components. The first is a silicate mineral or rock and the second is a metal powder and/or a further silicate mineral or rock. The silicate mineral or rock component in the spray powder has an alkali content of less than 6 percent by weight.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 22, 2014
    Assignee: Märkisches Werk GmbH
    Inventor: Vadim Verlotski
  • Patent number: 8736024
    Abstract: There is provided a semiconductive ceramic sintered compact that has a conductivity high enough to attain static electricity removal and antistatic purposes and, at the same time, has excellent mechanical properties or stability over time. The semiconductive ceramic sintered compact includes a main phase and a conductive phase, wherein the main phase is a ceramic sintered phase including Al2O3 particles, the area ratio of the conductive phase to the main phase is 0% (exclusive) to 10% (inclusive), and the conductive phase includes two or more metals selected from Mn (manganese), Fe (iron), and Ti (titanium) and has a composition meeting a relation of Mn/(Ti+Mn+Fe)>0.08 or Mn/Ti>0.15.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 27, 2014
    Assignee: Toto Ltd.
    Inventors: Shogo Shimada, Yasutaka Ushijima, Atsushi Teramoto
  • Publication number: 20130249136
    Abstract: A low-water-content castable composition produces cast products with an increased modulus of rupture, an increased cold crushing strength, and decreased porosity. The composition employs closed fractions of constituent particles with specified populations and specified gaps in the particle size distribution to produce these properties. The composition is suitable for refractory applications.
    Type: Application
    Filed: May 22, 2013
    Publication date: September 26, 2013
    Applicant: VESUVIUS CRUCIBLE COMPANY
    Inventor: Justin Teiken
  • Patent number: 8518528
    Abstract: A ceramic foam filter for molten aluminum alloys comprising an alumina silicate rich core and a boron glass shell and a chemical composition comprising: 20-70 wt % Al2O3, 20-60 wt % SiO2, 0-10 wt % CaO, 0-10 wt %; MgO and 2-20 wt % B2O3.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: August 27, 2013
    Assignee: Porvair PLC
    Inventors: Feng Chi, David P. Haack, Leonard S. Aubrey
  • Publication number: 20130217563
    Abstract: 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: Application
    Filed: January 10, 2013
    Publication date: August 22, 2013
    Inventors: Olivier Citti, Julien P. Fourcade, Andrea L. Kazmierczak
  • Patent number: 8501650
    Abstract: Dry mix for treating refractory substrates, comprising combustible particles of at least one oxidizable substance which, in the presence of oxygen, gives rise to an exothermic reaction, and particles of at least one other substance, wherein these particles form together, during said exothermic reaction, a coherent mass capable of adhering to and/or interacting with the treated substrate, characterized in that it comprises, as particles of at least one other substance, particles of at least one expanding substance, in that the dry mix without the particles of this at least one expanding substance has a first bulk density and in that the mix comprising said at least one expanding substance has a second bulk density lower than said first bulk density.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: August 6, 2013
    Assignee: Fib-Services Intellectual S.A.
    Inventor: Osvaldo Di Loreto
  • Patent number: 8455380
    Abstract: A powder including, in percentages by weight: (a) 94% to 99% of particles of at least one refractory material, the main constituent(s) of which are alumina and/or zirconia and/or silica; (b) 1% to 6% of a hydraulic cement; (c) 0 to 0.03% of organic fibers; (d) optionally, 0.075% to 1% of a surfactant; and (e) optionally, a setting accelerator, where the fraction of particles having a size below 40 ?m being distributed, in percentages by weight relative to the weight of the powder, in the following manner: (1) fraction<0.5 ?m: ?4%, (2) fraction<2 ?m: ?5%, fraction<10 ?m: ?16%, and fraction<40 ?m: 29-45%, where the proportion of zirconia in the fraction of particles having a size smaller than 10 ?m, called “fines”, is between 35% and 75% by weight relative to the total weight of said fraction.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: June 4, 2013
    Assignee: Saint-Gobain Centre de Recherches et d'Etudes Europeen
    Inventors: Thierry Consales, Michel Gaubil
  • Publication number: 20130136893
    Abstract: Disclosed are ceramic articles comprising ceramic honeycomb bodies and an aqueous composition, for example in the form of a cold-set plug, as well as processes for preparing ceramic articles and processes for making an aqueous composition for use with ceramic articles, for example as a cold-set plug composition.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventors: Keith Norman Bubb, Anthony Joseph Cecce, Thomas Richard Chapman
  • Patent number: 8354354
    Abstract: Disclosed is anti-alumina-buildup refractories for casting nozzles, which comprises a refractory aggregate including 20 mass % or more of CaO component, and 10 mass % or more of clinker particles each containing CaO as a mineral phase, on the basis of 100 mass % of the entire composition. At least a part of the surfaces of the CaO exposed from the surfaces of the corresponding clinker particles is formed with a CaCO3 film. The CaCO3 film releases CO2 gas through thermal decomposition to smooth an operative surface of the nozzle so as to prevent the accretion of metal thereon, so that CaO is continuously supplied to alumina attached on the operative surface to prevent alumina buildup. In addition, the CaCO3 film effectively prevents the hydration of CaO due to a hydration reaction.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: January 15, 2013
    Assignees: Krosakiharima Corporation, LWB Refractories Company
    Inventors: Koji Ogata, Donald Bruce Hoover
  • Publication number: 20130001839
    Abstract: Spout-filling compositions and a method for protecting and facilitating free opening of a spout valve of a ladle are disclosed. The spout-filling compositions may comprise an iron-based ilmenite sand. More particularly, the compositions may comprise ilmenite sand in combination with a quartz and/or carbon black and/or chromite and zircon. The compositions described herein may be placed in a ladle to insulate the valve from molten metal.
    Type: Application
    Filed: August 3, 2010
    Publication date: January 3, 2013
    Inventor: James M. Britt
  • Patent number: 8314049
    Abstract: A porous ceramic body including a major phase of beta-spodumene and a minor phase of mullite, the aggregate composition of a batch in weight percents of LiAlSi2O6, SiO2, and Al6Si2O13 are as defined herein. Also disclosed is a method for making a porous ceramic article is and includes: mixing inorganic batch ingredients including sources of silica, alumina, and lithia, with a liquid and an organic binder to form a plasticized batch mixture; forming a green body; and heating to the porous ceramic article, comprised of a major phase of beta-spodumene and a minor phase of mullite.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 20, 2012
    Assignee: Corning Incorporated
    Inventors: Keith Norman Bubb, Cameron Wayne Tanner
  • Publication number: 20120021893
    Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Kostantinos KOURTAKIS
  • Publication number: 20120021894
    Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Kostantinos KOURTAKIS
  • Publication number: 20120017992
    Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Kostantinos KOURTAKIS
  • Publication number: 20120017991
    Abstract: Disclosed is a mica paper composite and a process for making the mica paper composite. Articles comprising the mica paper composite are also disclosed.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventor: Kostantinos KOURTAKIS
  • Patent number: 8048817
    Abstract: To provide an amorphous silica powder suitable for a sealing material for semiconductors having improved HTSL properties and HTOL properties, and a process for its production. An amorphous silica powder containing Al in an amount of from 0.03 to 20 mass % as calculated as Al2O3 measured by atomic absorption spectrophotometry, wherein the average particle size is at most 50 ?m, and when the amorphous silica powder is divided according to the average particle size into two powders, a powder having a particle size smaller than the average particle size has a higher content as calculated as Al2O3 than a powder having a particle size larger than the average particle size.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 1, 2011
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhisa Nishi, Tohru Umezaki
  • Publication number: 20110236695
    Abstract: A composite article includes a substrate and a protective layer disposed on the substrate. The protective layer has a silicon-aluminum-carbon-nitrogen solid solution composition and microstructure.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 29, 2011
    Inventor: Wayde R. Schmidt
  • Publication number: 20110135948
    Abstract: In one embodiment, a composition (10) to be mixed with a molten metal to make a metal matrix composite, the composition characterized by: a ceramic reinforcing filler (12), the ceramic reinforcing filler not being wettable by molten aluminum and/or not being chemically stable in molten aluminum, the ceramic reinforcing filler being coated with a ceramic material, the ceramic material being wettable by and chemically stable in molten aluminum. In a related embodiment, a composition (20) to make a porous preform to be infiltrated by molten metal to make a metal matrix composite, the composition characterized by: a ceramic reinforcing filler (23), the ceramic reinforcing filler not being wettable by molten aluminum, the ceramic reinforcing filler being coated with a ceramic material (22) and optionally with a metal (21) such as nickel, the ceramic material being wettable by molten aluminum.
    Type: Application
    Filed: April 8, 2004
    Publication date: June 9, 2011
    Inventors: Aleksander J. Pyzik, Ted A. Morgan, Terry I. Hu, Daniel R. Lister, Robert A. Newman, Richard Allen Lungard, Qin Deng
  • Patent number: 7954341
    Abstract: The invention is concerned with a material which shows low absorption for UV radiation having a wavelength below 250 nm, low birefringence, high chemical resistance and high radiation resistance and which is therefore particularly usable for making optical components for microlithography. According to the invention the material consists of synthetically produced quartz crystallites which form a polycrystalline structure and have a mean grain size in the range between 500 nm and 30 ?m. The method according to the invention for making a blank from the material comprises providing granules consisting of synthetically produced quartz crystals having a mean grain size in the range between 500 nm and 30 ?m, and sintering the granules to obtain a blank of polycrystalline quartz.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: June 7, 2011
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Bodo Kuehn, Stefan Ochs
  • Publication number: 20110129784
    Abstract: The present disclosure relates to a silica-based crucible material that includes, before sintering or firing, selected amounts of a thermal expansion stabilizer component (B2O3 and Ca2SiO4) which impart improved thermal shock resistance and enhanced ability to withstand repeated thermal cycling, to a sintered or fired crucible made of the material. An illustrative embodiment of the invention provides a crucible material whose chemical composition comprises, in weight %, about 91% to about 98% SiO2, about 1% to about 8% thermal stabilizer component, and up to about 1.0% of additional oxides including MgO, Al2O3 Fe2O3, CaO and ZrO2.
    Type: Application
    Filed: November 23, 2010
    Publication date: June 2, 2011
    Inventors: James Crawford Bange, Michael E. Collier, David I. Seymour, Ronald Leroy Stewart, Christopher L. Thomas
  • Publication number: 20110120987
    Abstract: A substrate for a heating assembly comprising a mixture of a mica material with an electrically insulating material, the substrate having a thermal coefficient of expansion that is higher than pure mica. A method of manufacturing the substrate is also disclosed.
    Type: Application
    Filed: January 31, 2011
    Publication date: May 26, 2011
    Applicant: THERMOCERAMIX INC.
    Inventor: Richard C. ABBOTT
  • Patent number: 7854882
    Abstract: A method for preparing a high-temperature heat-resistant composite material by combining a mixture of submicron alumina powder and submicron silica powder, wherein the ratio of alumina to silica is from about 4:1 to about 5:1, submicron Group II metal oxide powder, and a Group I metal silicate solution to form a slurry, wherein the weight of the Group II metal oxide powder is an amount corresponding to about 5% to about 10% of the weight of the silicate solution; contacting reinforcing high-temperature resistant fibers with the slurry to form a composite precursor composition; and curing the composition at a temperature sufficient to produce the high-temperature heat-resistant composite material capable of resisting temperatures up to about 1400° C. Composite materials prepared according to the method and articles incorporating the material are also presented.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 21, 2010
    Assignee: Rutgers, The State University
    Inventor: Perumalsamy Naidu Balaguru
  • Patent number: 7825052
    Abstract: A refractory material used in refractory furnace liners, combustion chambers, baffles and artificial fire logs includes alumina silicate; an additive comprising at least one of silicon carbide, silicon nitride, boron carbide, boron nitride and silicon carbo-nitride; and a binder. The refractory material is light weight, has a high noise reduction capacity, is fire resistant and has a reduced silica content. In a most preferred embodiment, the additive makes up 50.0% to 55.0% of the material by weight, the binder makes up 4.5% to 5.0% of the material by weight and the linear shrinkage of the material is no greater than 3.5% at 2600° F. A preferred binder is colloidal silica although many others are suitable. Preferably, the material is free of cellulose fiber and sodium silicate.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: November 2, 2010
    Inventors: Suhas N. Patil, Leonard J. Reinhart, Richard F. Wilk, Jr.
  • Publication number: 20100273636
    Abstract: Mix which comprises a) one or more very finely divided silicon dioxide powders having an average particle diameter of from 2 to 100 nm and a BET surface area of at least 30 m2/g, b) one or more particulate components selected from the group consisting of oxides, carbides and nitrides, in each case having an average particle diameter of from >0.5 ?m to 30 mm, c) one or more synthetic resins as binders and d) one or more metallic antioxidants having an average particle diameter of from >0.5 to 250 ?m. Process for producing a shaped body, in which to the mix is introduced into a mould, pressed if appropriate and heated to a temperature at which the synthetic resin crosslinks thermally. Shaped body which can be obtained therefrom. Process for producing a refractory shaped body, in which the shaped body is carbonized. Refractory shaped body which can be obtained therefrom.
    Type: Application
    Filed: December 10, 2008
    Publication date: October 28, 2010
    Applicants: EVONIK DEGUSSA GMBH, TECH UNIV BER FREI- INST FUER KER, GLAS-UND BAUS
    Inventors: Christos G. Aneziris, Uwe Klippel, Christoph Tontrup
  • Patent number: 7820278
    Abstract: A refractory mortar cured material is formed in the surface or joint portions of a ceramic refractory material, such as fire bricks used in the lining of melting furnace or firing furnace used at high temperature, and includes ceramic particles with an inorganic binder having silanol group that are kneaded together with water. The kneaded mortar is applied on the surface of a ceramic base material. The average particle size of ceramic particles in the refractory mortar is 10 to 50 ?m, and the difference between the 90% particle size and the 10% particle size is 10 ?m or more to 60 ?m or less. The average pore size of the refractory mortar cured material is 5 to 25 ?m, and the width of pore size distribution is 20 to 80 ?m, so that the cracks are suppressed. In addition, the bulk density is 0.9 to 1.5 g/cm3.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: October 26, 2010
    Assignees: NGK Insulators, Ltd., NGK Adrec Co., Ltd.
    Inventors: Tsuneo Komiyama, Osamu Yamakawa, Tetsuhiro Honjo, Akito Higuchi
  • Publication number: 20100248932
    Abstract: The method of making a transparent ceramic includes making a molded body from a powder mixture of starting materials, which include one or more sintering aids. The sintering aids can include SiO2, TiO2, ZrO2, HfO2, Al2O3 and/or fluorides. The transparent ceramic is made by pre-sintering the molded body at temperatures between 500° C. to 900° C., subsequently sintering in vacuum at temperatures between 1400° C. and 1900° C. and then pressurizing the sintered molded body at a pressure of from 10 to 198 MPa followed by annealing. The optoceramic material contains crystals with a stoichiometry of A2+XBYBYDZE7, wherein ?1.15?x?+1.1, 0?y?3, 0?z?1.6 and 3x+4y+5z=8; and wherein A is a trivalent rare earth cation, B is a tetravalent cation, D is a pentavalent cation and E is a divalent anion.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 30, 2010
    Inventors: Yvonne Menke, Akio Ikesue
  • Publication number: 20100224756
    Abstract: The invention relates to a molding material mixture for production of casting molds for metalworking, to a process for producing casting molds, to casting molds obtained by the process and to the use thereof. For the production of casting molds, a refractory molding matrix and a waterglass-based binder are used. The binder has been admixed with a proportion of a particulate metal oxide which is selected from the group of silicon dioxide, aluminum oxide, titanium oxide and zinc oxide, particular preference being given to using synthetic amorphous silicon dioxide. The molding material mixture comprises a carbohydrate as a further essential constituent. The addition of carbohydrates allows the mechanical strength of casting molds and the surface quality of the casting to be improved.
    Type: Application
    Filed: October 19, 2007
    Publication date: September 9, 2010
    Applicant: ASHLAND-SUDCHEMIE-KERNFEST GMBH
    Inventors: Jens Muller, Diether Koch, Marcus Frohn, Jorg Korschgen, Stefan Schreckenberg
  • Publication number: 20100210445
    Abstract: The present patent application relates to a reactive ceramic binder in liquid form which is suitable for producing ceramic products from ceramic powder, characterized in that the reactive, liquid ceramic binder comprises liquid organomodified siloxane compounds having organoalkoxysiloxane units of the general formula (I) where the radicals R1 are, independently of one another, identical or different alkyl, alkaryl or aryl radicals which may be interrupted by ether functions, the radicals R2 are, independently of one another, identical or different radicals selected from the group consisting of H and/or alkyl radicals having from 1 to 6 carbon atoms, the radicals R3 are, independently of one another, identical or different divalent, saturated or unsaturated hydrocarbon radicals which have from 1 to 30 carbon atoms and may be interrupted by ether functions and a is greater than or equal to 0 and less than or equal to 2.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 19, 2010
    Inventors: Tadeusz von Rymon Lipinski, Sascha Herrwerth, Thomas Ebbrecht, Frank Koenig, Michael Ferenz
  • Publication number: 20100173767
    Abstract: The invention relates to a method for regenerating used foundry sand, which is contaminated with soluble glass, wherein: used foundry sand is provided, which is tainted with a binding agent made of the soluble glass, to which a particle-shaped metal oxide is added; and the used foundry sand is subjected to a thermal treatment, wherein the foundry sand is heated to a temperature of at least 200° C., thereby obtaining regenerated foundry sand. The invention further relates to regenerated foundry sand, as that obtained from using the method.
    Type: Application
    Filed: February 19, 2008
    Publication date: July 8, 2010
    Inventors: Diether Koch, Jens Müller, Marcus Frohn
  • Publication number: 20100154856
    Abstract: A substrate (1) for thermoelectric conversion modules has a ceramic material as a main component and has flexibility. A thermoelectric conversion module (2) has a plurality of thermoelectric elements (3, 4) arranged in the longitudinal direct of the substrate (1), at least on one surface of the substrate (1), so that the longitudinal directions of the thermoelectric elements (3, 4) are along the width direction of the substrate (1). Electrodes (5), which electrically connect the thermoelectric elements (3, 4) in series, are arranged on the end portions of the thermoelectric elements (3, 4).
    Type: Application
    Filed: March 11, 2008
    Publication date: June 24, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yuichi Hiroyama, Yoshio Uchida
  • Patent number: 7708957
    Abstract: 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: Grant
    Filed: April 7, 2008
    Date of Patent: May 4, 2010
    Assignee: Saint-Gobain Ceramics & Plastics Inc.
    Inventor: John Stewart Reid
  • Patent number: 7704296
    Abstract: Disclosed are high-porosity cordierite honeycomb substrates having fine pore size, narrow pore size distribution, little or no microcracking, and a high thermal shock resistance. The porous ceramic honeycomb substrates generally include a primary cordierite ceramic phase as defined herein. Also disclosed are methods for making and using the cordierite substrates.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: April 27, 2010
    Assignee: Corning Incorporated
    Inventor: Gregory Albert Merkel
  • Patent number: 7700061
    Abstract: The present invention provides a heat-resistant material for a low-melting metal casting machine, which comprises calcium silicate and a fluoride.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: April 20, 2010
    Assignee: Nichias Corporation
    Inventor: Akifumi Sakamoto
  • Patent number: 7691766
    Abstract: The invention is concerned with a material which shows low absorption for UV radiation having a wavelength below 250 nm, low birefringence, high chemical resistance and high radiation resistance and which is therefore particularly usable for making optical components for microlithography. According to the invention the material consists of synthetically produced quartz crystallites which form a polycrystalline structure and have a mean grain size in the range between 500 nm and 30 ?m. The method according to the invention for making a blank from the material comprises providing granules consisting of synthetically produced quartz crystals having a mean grain size in the range between 500 nm and 30 ?m, and sintering the granules to obtain a blank of polycrystalline quartz.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: April 6, 2010
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Bodo Kuehn, Stefan Ochs
  • Patent number: 7683293
    Abstract: A domestic appliance, particularly a cooking appliance, having a metallic surface, is provided with a coating based on silicon oxide. Such coating is deposited on the metallic surface by plasma enhanced chemical vapor deposition (PECVD). The coating protects the metallic surface from scratching, staining and thermal yellowing.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: March 23, 2010
    Assignee: Whirlpool Corporation
    Inventors: Ermanno Buzzi, John Doyle, Thomas Friesen
  • Publication number: 20100048378
    Abstract: A transparent yttrium aluminum garnet precursor composition is provided that includes a plurality of calcined particles of yttrium aluminum oxide having a mean particle domain size of between 10 and 200 nanometers and a predominant hexagonal crystal structure. High levels of YAG transparency are obtained for large YAG articles through control of the aluminum:yttrium atomic ratio to 1:06±0.001 and limiting impurity loadings to less than 100 ppm. The composition is calcined at a temperature between 700° Celsius and 900° Celsius to remove organic additives to yield a predominant metastable hexagonal phase yttrium aluminum oxide nanoparticulate having an atomic ratio of aluminum: yttrium of 1:0.6±0.001. With dispersion in an organic binder and a translucent YAG article is formed having a transmittance at a wavelength of 1064 nanometers of greater than 75%.
    Type: Application
    Filed: April 24, 2008
    Publication date: February 25, 2010
    Applicant: NANOCEROX, INC.
    Inventors: Yin Tang, Anthony C. Sutorik, Long Nguyen, Lizhi Liu, Chris Zyskowski
  • Publication number: 20100048376
    Abstract: Process for preparing granules of oxidic or nonoxidic metal compounds, characterized in that a dispersion which comprises water, oxidic or nonoxidic metal compounds and at least one dispersant is spray-dried,—where the proportion of oxidic or nonoxidic metal compounds is 40 to 70% by weight and the sum of the proportions of water and the particles is at least 70% by weight and—the particles have a BET surface area of 20 to 150 m2/g and a median of the particle size of less than 100 nm,—where the dispersant is present in the dispersion with a proportion of 0.25 to 10% by weight based on the oxidic or nonoxidic metal compounds and—where the spray-drying is performed by atomization with air in the cocurrent principle or fountain principle, and an air inlet temperature of 170 to 300° C. and an air outlet temperature of 90 to 130° C. are selected.
    Type: Application
    Filed: November 8, 2007
    Publication date: February 25, 2010
    Applicants: EVONIK DEGUSSA GmbH, FRAUNHOFER-GESELL. ZUR FOERD. DER ANG. FORS. E.V.
    Inventors: Monika Oswald, Klaus Deller, Tassilo Moritz, Manfred Nebelung
  • Publication number: 20100029463
    Abstract: Preparation for producing refractory materials, characterized in that it comprises one or more particulate, refractory components and one or more binders, where—the particulate, refractory component has a mean particle diameter of >0.3 m and—the binder is selected from among—from 0.05 to 50% by weight of a very finely particulate binder having a mean particle diameter of from 10 nm to 0.3 m selected from the group consisting of aluminium oxide, titanium dioxide, zirconium dioxide and/or mixed oxides of the abovementioned oxides, —from 0 to 20% by weight of an inorganic binder, from 0 to 20% by weight of a hydraulically setting binder, —from 0 to 15% by weight of an organic, silicon-free binder—and the preparation additionally contains from 0 to 35% by weight of water, where—the proportion of the particulate, refractory component is equal to 100 and the percentages of the further materials in the preparation are based on the particulate component.
    Type: Application
    Filed: September 19, 2007
    Publication date: February 4, 2010
    Applicant: Evonik Degussa GmbH
    Inventors: Tadeusz Von Rymon Lipinski, Christoph Tontrup, Wolfgang Lortz, Christoph Batz-Sohn
  • Patent number: 7655594
    Abstract: Briefly described, compositions, materials including the compositions, methods of using the compositions, and methods of degrading contaminants, are described herein. The composition can include a polyoxometalate/ cationic silica material. In addition, the compositions can be made of a polyoxometalate/cationic silica material, a copper (II) salt having a weakly bound anion, and a nitrate salts. Further, the compositions can be made of a polyoxometalate/cationic silica material, a copper (II) salt having a weakly bound anion, a compound selected from tetraethylammonium (TEA) nitrate, tetra-n-butylammonium (TBA) nitrate, and combinations thereof.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: February 2, 2010
    Assignee: Emory University
    Inventors: Neyla Okun, Craig L. Hill
  • Publication number: 20100009840
    Abstract: The present invention describes a cement free refractory mixture. The mixture comprises a pH buffer and a component containing a metal or fumed silica. Water may impart good flow characteristics to the mixture and can produce an effective low temperature cure. At elevated temperatures, an article formed using this mixture has superior refractory and physical properties.
    Type: Application
    Filed: July 6, 2007
    Publication date: January 14, 2010
    Inventors: Robert A. Pattillo, Sam Bonsall
  • Publication number: 20100004114
    Abstract: The invention relates to a fired refractory ceramic product. According to the invention, this generic term encompasses both shaped and unshaped products. Shaped products are ones which have a defined shape so that they can be manufactured in finished form on the premises of the manufacturer. Shaped products include: bricks, nozzles, tubes, stoppers, plates, etc. The term unshaped products includes ones which are usually produced by the user from a corresponding composition. They include bases for furnaces which are cast from a composition but also repair compositions, etc.
    Type: Application
    Filed: August 8, 2007
    Publication date: January 7, 2010
    Applicant: Refractory Intellectual Property GmbH & Co. KG
    Inventors: Boro Djuricic, Franz Reiterer