Forming Product Or Preform From Molten Glass Patents (Class 65/33.9)
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Patent number: 11939695Abstract: A quartz glass crucible 1 having a cylindrical side wall portion 10a, a bottom portion 10b, and a corner portion 10c includes a transparent layer 11 as an innermost layer made of quartz glass, a semi-molten layer 13 as an outermost layer made of raw material silica powder solidified in a semi-molten state, and a bubble layer 12 made of quartz glass interposed therebetween. An infrared transmissivity of the corner portion 10c in a state where the semi-molten layer 13 is removed is 25 to 51%, the infrared transmissivity of the corner portion 10c in the state where the semi-molten layer 13 is removed is lower than an infrared transmissivity of the side wall portion 10a, and the infrared transmissivity of the side wall portion 10a in the state where the semi-molten layer 13 is removed is lower than an infrared transmissivity of the bottom portion 10b.Type: GrantFiled: December 16, 2019Date of Patent: March 26, 2024Assignee: SUMCO CORPORATIONInventors: Ken Kitahara, Masanori Fukui, Hiroshi Kishi, Tomokazu Katano, Eriko Kitahara
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Patent number: 11713515Abstract: An ingot includes a first surface, a second surface opposite to the first surface, and a third surface positioned along a first direction and connecting the first surface and the second surface. The ingot includes: a first pseudo single crystal region; an intermediate region containing one or more pseudo single crystal regions; and a second pseudo single crystal region. The first pseudo single crystal region, the intermediate region, and the second pseudo single crystal region are positioned adjacent sequentially in a second direction perpendicular to the first direction. In the second direction, a width of each of the first and second pseudo single crystal regions is larger than a width of the first intermediate region. Each of a boundary between the first pseudo single crystal region and the intermediate region and a boundary between the second pseudo single crystal region and the intermediate region includes a coincidence boundary.Type: GrantFiled: July 5, 2019Date of Patent: August 1, 2023Assignee: KYOCERA CORPORATIONInventors: Hideyoshi Tanabe, Hitoshi Matsuo
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Patent number: 10800141Abstract: A component for an electronic device including an internal compressive stress region is disclosed herein. The internal compressive stress region may be created in a glass portion of the component or in a glass ceramic portion of the component. Electronic devices comprising the components and method for making the components are also disclosed.Type: GrantFiled: January 30, 2019Date of Patent: October 13, 2020Assignee: APPLE INC.Inventors: Christopher C. Bartlow, Dale N. Memering, Tyler A. Marshall, Victor Luzzato
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Patent number: 10759147Abstract: A glass article includes a glass core layer and a glass cladding layer adjacent to the core layer. An average coefficient of thermal expansion (CTE) of the core layer is greater than an average CTE of the cladding layer. An effective 109.9 P temperature of the glass article is at most about 750° C.Type: GrantFiled: July 5, 2019Date of Patent: September 1, 2020Assignee: Corning IncorporatedInventors: Thomas Michael Cleary, Sinue Gomez, Guangli Hu, Robert Anthony Schaut, Charlene Marie Smith, Natesan Venkataraman
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Patent number: 10399304Abstract: A glass article includes a glass core layer and a glass cladding layer adjacent to the core layer. An average coefficient of thermal expansion (CTE) of the core layer is greater than an average CTE of the cladding layer. An effective 109.9 P temperature of the glass article is at most about 750° C.Type: GrantFiled: May 7, 2015Date of Patent: September 3, 2019Assignee: Corning IncorporatedInventors: Thomas Michael Cleary, Sinue Gomez, Guangli Hu, Robert Anthony Schaut, Charlene Marie Smith, Natesan Venkataraman
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Patent number: 9260341Abstract: The invention relates to novel transparent glasses, vitroceramics, and transparent or translucent ceramics containing, in relation to the total composition of the glass, vitroceramic, or ceramic, at least 60 wt % of a composition having the following formula (I): (M1O)x(M2O)y(M3)2O3)z(Al2O3)100?x?y?z (I), where M1 is an element selected from among Ba and/or Sr, M2 is an element selected from among Mg or Ca, x and y are numbers such that 30?x+y?80, y is between 0% and 10% of x, M3 is an element selected from among B, Ga, or In, and z is a number between 0% and 10% of (100?x?y). The invention also relates to the method for manufacturing said compositions and to the uses of said compositions in the field of optics.Type: GrantFiled: November 30, 2012Date of Patent: February 16, 2016Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTFIIQUE (CNRS)Inventors: Salaheddine Alahrache, Mathieu Allix, Guy Matzen, Francis Millot, Marina Licheron, Thierry Cardinal, Alain Garcia, Kholoud Al Saghir
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Publication number: 20150118321Abstract: A process of preparing a glass comprising: (a) heating a mixture of precursor chemicals to a melt temperature to form a melt, the melt being characterized in that quenching the melt at or above a threshold temperature results in a spinodal phase seperation, and quenching the melt below the threshold temperature results in a droplet phase seperation; and (b) quenching the melt at or above the threshold temperature in a preheated mold to form the glass composition having the spinodal phase seperation.Type: ApplicationFiled: October 28, 2014Publication date: April 30, 2015Inventors: Himanshu Jain, Roman Holovchak, Matthias M. Falk
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Patent number: 9016090Abstract: A method for manufacturing a plurality of glass microspheres comprises: melting a batch into a first glass melt in a melter system, processing the first glass melt into a second glass, pulverizing the second glass into a plurality of glass fragments, thermally processing the plurality of glass fragments into a plurality of glass microspheres, providing at least one of a plurality of redox reactions and a plurality of events in at least one of the first glass melt and a melt of the second glass, and the plurality of redox reactions and the plurality of events are induced by a plurality of redox active group (RAG) components.Type: GrantFiled: June 12, 2013Date of Patent: April 28, 2015Inventors: Hamid Hojaji, Laura Gabriela Kocs
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Publication number: 20150064576Abstract: A lithium-ion conductive glass-ceramic article has a crystalline component characterized by the formula MA2(XO4)3, where M represents one or more monovalent or divalent cations selected from Li, Na and Zn, A represents one or more trivalent, tetravalent or pentavalent cations selected from Al, Cr, Fe, Ga, Si, Ti, Ge, V and Nb, and X represents P cations which may be partially substituted by B cations.Type: ApplicationFiled: August 27, 2014Publication date: March 5, 2015Inventors: Bruce Gardiner Aitken, Nadja Teresia Lonnroth
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Publication number: 20150018193Abstract: A glass-ceramic is disclosed, this glass-ceramic includes at least the following constituents (in mol % on oxide basis): SiO2 1-30, Al2O3 0-20, B2O3 0-25, TiO2 10-70, RE2O3 0-35, BaO 5-35, SiO2+Al2O3+B2O3<25, where RE is lanthanum, another lanthanoid, or yttrium, and where Ti may be replaced in part, preferably up to 10%, by Zr, Hf, Y, Nb, V, Ta.Type: ApplicationFiled: May 21, 2014Publication date: January 15, 2015Applicant: SCHOTT AGInventors: Martun HOVHANNISYAN, Martin LETZ, Gordon KISSL
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Publication number: 20140356609Abstract: A method for producing bubble-free glasses is provided, in which a glass mixture that is arsenic-free, antimony-free and tin-free with the exception of any unavoidable raw material impurities and at least one sulfate compound as a refining agent are used. The glass mixture and refining agent are melted and primarily refined in a first region of a melting tank, an average melting temperature (T1) is set at T1>1580° C. and an average melt residence time (t1) is set at t1>2 hours. A secondary refinement is carried out in a second region, an average melting temperature (T2) is set at T2>1660° C. and an average melt residence time (t2) is set at t2>1 hour, and the proportion of the SO3 resulting from decomposition of the sulfate is reduced to less than 0.002 wt. %.Type: ApplicationFiled: August 20, 2014Publication date: December 4, 2014Inventors: Frank-Thomas LENTES, Karin NAUMANN, Ulrich SCHIFFNER, Friedrich SIEBERS, Christian MUELLER, Klaus SCHOENBERGER, Evelin WEISS
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Publication number: 20140318184Abstract: Provided herein is a method for producing glass-ceramic sheets. The method includes texturing at least one surface of a first glass sheet, and stacking the first glass sheet and a second glass sheet. The first glass sheet and the second glass sheet are stacked so that the textured surface of the first glass sheet contacts a surface of the second glass sheet. The first and second glass sheets are cerammed. After cooling, the cerammed first and second glass sheets are separated. Also provided is a pre-form for producing glass-ceramic sheets. The pre-form includes a first glass sheet having a textured surface, and a second glass sheet contacting the first glass sheet. The textured surface of the first glass sheet is in contact with a surface of the second glass sheet.Type: ApplicationFiled: April 30, 2013Publication date: October 30, 2014Applicant: Corning IncorporatedInventors: Sumalee Likitvanichkul, William Edward Lock, Sophie Peschiera
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Patent number: 8857214Abstract: Methods for producing crucibles for holding molten material that contain a reduced amount of gas pockets are disclosed. The methods may involve use of molten silica that may be outgassed prior to or during formation of the crucible. Crucibles produced from such methods and ingots and wafers that are produced from crucibles with a reduced amount of gas pockets are also disclosed.Type: GrantFiled: November 18, 2011Date of Patent: October 14, 2014Assignee: SunEdison Semiconductor LimitedInventors: Steven L. Kimbel, Harold W. Korb, Richard J. Phillips, Shailendra B. Rathod
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Patent number: 8853110Abstract: A transparent glass-ceramic materials contains a spinel solid solution as the main crystalline phase and is free of As2O3 and Sb2O3. Corresponding precursor alumino-silicate glasses, articles made of said transparent glass-ceramic materials as well as a method for manufacturing such articles, and structures comprising a sheet made of such glass-ceramic materials and electronic or optoelectronic devices comprising such structures are also disclosed. Some materials disclosed can be used as substrates for high temperature growth of high quality monocrystalline or polycrystalline silicon thin films. Structures including such substrates with such thin films thereon can be used in photovoltaic devices, flat panel devices and liquid crystal devices.Type: GrantFiled: November 3, 2011Date of Patent: October 7, 2014Assignee: Corning IncorporatedInventors: Etienne Almoric, Marie Jacqueline Monique Comte
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Publication number: 20140250950Abstract: The present invention is apparatus for, and method of, purification of silicon by electric induction heating and melting of silicon in a crucible or susceptor vessel, with subsequent directional partial cooling of the silicon melt to an initial amorphous-to-crystalline (solidification) temperature to produce a directionally solidified purified quantity of silicon and a separate quantity of high impurity silicon. The quantity of high impurity silicon is removed from the vessel and the purified quantity of silicon at solidification temperature is remelted in the vessel for removal from the vessel or further processing.Type: ApplicationFiled: May 19, 2014Publication date: September 11, 2014Applicant: Inductotherm Corp.Inventor: Oleg S. FISHMAN
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Patent number: 8789391Abstract: The invention starts from a method for producing a crucible of quartz glass in that SiO2 inner layer granules are vitrified in a rotating melting mold, which is covered at least in part by a heat shield, in a light gas-containing atmosphere under the action of a plasma to obtain a transparent inner layer, at least part of the light gas being supplied to the melting mold through a gas inlet of the heat shield. In order to form an inner layer with a particularly low bubble content and with minimal efforts in terms of energy and material, it is proposed that in a layer forming step preceding the vitrifying step a granule layer consisting of the SiO2 inner layer granules is formed on the inner wall of the crucible, and that the plasma zone and the heat shield are movable together with the gas inlet and are moved laterally in the direction of the granule layer during the vitrifying step taken for vitrifying the granule layer.Type: GrantFiled: January 9, 2009Date of Patent: July 29, 2014Assignee: Heraeus Quarzglas GmbH & Co. KGInventors: Thomas Kayser, Walter Lehmann, Hilmar Laudahn
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Patent number: 8721789Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.Type: GrantFiled: March 15, 2012Date of Patent: May 13, 2014Assignee: ABB ABInventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
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Publication number: 20140123705Abstract: A method to form quartz glass ingots of ultra low contamination and defect levels by firing a high-purity quartz form as the feedstock, wherein the quartz glass ingot is free-formed on a platen rotating concentrically with the feedstock quartz article.Type: ApplicationFiled: January 15, 2014Publication date: May 8, 2014Inventors: Michael Peter Winnen, Todd R. Springer
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Publication number: 20140087194Abstract: Disclosed herein are one or more of formable and/or color-tunable, crystallizable glasses; formed and/or color-tuned glass-ceramics; IXable, formed and/or color-tuned glass-ceramics; IX, formed and/or color-tuned glass-ceramics; a machine or equipment including a formed and/or color-tuned glass-ceramic; a machine or equipment including an IXable, formed and/or color-tuned glass-ceramics; a machine or equipment including an IX, formed and/or color-tuned glass-ceramics; one or more processes for making formable, crystallizable glasses crystallizable; one or more processes for making formable and/or color-tunable, crystallizable glasses; one or more processes for making formed and/or color-tuned glass-ceramics; one or more processes for making IXable, formed and/or color-tuned glass-ceramics; one or more processes for making IX, formed and/or color-tuned glass-ceramics; and one or more processes for using any one of formable and/or color-tunable, crystallizable glasses; formed and/or color-tuned glass-ceramics;Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicant: Corning IncorporatedInventors: Matthew John Dejneka, Charlene Marie Smith
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Publication number: 20140008375Abstract: The present invention relates to the field of utensils and processes for worldwide wine production. More specifically, the invention relates to a flute model for beverages, manufactured from an appropriate material, the field of application of which comprises household articles and utensils for serving fine beverages such as sparkling beverages. The present invention also relates to the process of manufacturing the flute for beverages.Type: ApplicationFiled: September 1, 2011Publication date: January 9, 2014Applicants: CRISTALLERIE STRAUSS S.A., ASSOCIACAO BRASILEIRA DE ENOLOGIA - ABEInventors: Mauro Celso Zanus, Carlos Eduardo Abarzua Espejo, Frederico Werner Strauss
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Publication number: 20130329179Abstract: Methods for preparing ferroelectric nanoparticles, liquid crystal compositions containing the ferroelectric nanoparticles, and electronic devices utilizing the ferroelectric nanoparticles are described. The methods of preparing the ferroelectric nanoparticles may include size-reducing a starting material comprising particles of a bulk intrinsically nonferroelectric glass to form glass nanoparticles having an average size of less than 20 nm, the glass nanoparticles comprising ferroelectric nanoparticles. Exemplary bulk intrinsically nonferroelectric glasses may include borosilicate glasses, tellurite glasses, bismuthate glasses, gallate glasses, and mixtures thereof, for example. The size reduction may be accomplished using ball milling with a solvent combination such as n-heptane and oleic acid. Liquid crystal compositions may include the ferroelectric nanoparticles in combination with a liquid crystal.Type: ApplicationFiled: December 12, 2012Publication date: December 12, 2013Applicant: AZIMUTH CORPORATIONInventors: Gary Cook, Dean R. Evans, Sergey A. Basun
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Publication number: 20130255316Abstract: The invention relates to a process for manufacturing a refractory product, comprising the following successive steps: a) mixing of raw materials so as to form a suitable feedstock so that the block obtained in step d) comprises more than 85% of ZrO2, b) melting of said feedstock until a molten material is obtained, c) optionally, casting said molten material, d) cooling of the molten material to solidification in the form of a block, e) optionally, heat treatment, process comprising a compression operation in which a compression pressure of greater than 0.2 MPa is applied to at least one portion of the outer surface of the block obtained in step d), the compression operation beginning at a temperature above the temperature at which, in said block, tetragonal zirconia is converted to monoclinic zirconia or “phase transformation temperature”, and ending at a temperature below said phase transformation temperature.Type: ApplicationFiled: December 15, 2011Publication date: October 3, 2013Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Michel Gaubil, Ludovic Massard
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Publication number: 20130237400Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.Type: ApplicationFiled: March 12, 2012Publication date: September 12, 2013Applicant: SCHOTT AGInventors: Martin Letz, Stephan Knoener, Martina Dressler, Daniela Seiler, Bernd Hoppe, Michael Kluge
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Publication number: 20130209963Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.Type: ApplicationFiled: March 15, 2013Publication date: August 15, 2013Inventor: Ivoclar Vivadent AG
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Publication number: 20130178353Abstract: ?-quartz glass-ceramics, the composition of which is most particularly optimized, with reference to the refining of their precursor glasses, with reference to good resistance to devitrification of said precursor glasses and with reference to their resistance to temperature ageing, articles comprising such glass-ceramics, lithium alumino-silicate glasses, which are precursors of such glass-ceramics, as well as methods for preparing such glass-ceramics and articles.Type: ApplicationFiled: January 21, 2011Publication date: July 11, 2013Inventors: Marie Jacqueline Monique Comte, Isabelle Marie Melscoët-Chauvel, Delavand Ovono Ovono, Philippe Pradeau
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Publication number: 20130122278Abstract: A polycrystalline silicon ingot manufacturing apparatus, a polycrystalline silicon ingot manufacturing method, and a polycrystalline silicon ingot are provided. The apparatus comprises: a crucible having a rectangular shape in a cross-section; an upper heater provided above the crucible; and a lower heater provided below the crucible. A silicon melt stored in the crucible is solidified from a bottom surface of the crucible upward unidirectionally. The apparatus further comprises an auxiliary heater that heats at least a bottom-surface-side portion of a sidewall of the crucible. The production yield can be improved by using the apparatus and by reducing the oxygen concentration at the location where the oxygen concentration tends to be high locally at the bottom part of the ingot.Type: ApplicationFiled: July 21, 2011Publication date: May 16, 2013Applicants: MITSUBISHI MATERIALS ELECTRONIC CHEMICALS CO LTD, MITSUBISHI MATERIALS CORPORATIONInventors: Koji Tsuzukihashi, Saburo Wakita, Hiroshi Ikeda, Masahiro Kanai
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Publication number: 20130095028Abstract: A crystalline silicon ingot and a method of manufacturing the same are provided. Using a crystalline silicon seed layer, the crystalline silicon ingot is formed by a directional solidification process. The crystalline silicon seed layer is formed of multiple primary monocrystalline silicon seeds and multiple secondary monocrystalline silicon seeds. Each of the primary monocrystalline silicon seeds has a first crystal orientation different from (100). Each of the secondary monocrystalline silicon seeds has a second crystal orientation different from the first crystal orientation. Each of the primary monocrystalline silicon seeds is adjacent to at least one of the secondary monocrystalline silicon seeds, and separate from the others of the primary monocrystalline silicon seeds.Type: ApplicationFiled: March 26, 2012Publication date: April 18, 2013Applicant: SINO-AMERICAN SILICON PRODUCTS INC.Inventors: Wen-Chieh LAN, Yong-Cheng Liu, Wen-Huai YU, Sung-Lin HSU, Wen-Ching HSU
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Publication number: 20120304697Abstract: A device for obtaining multicrystalline silicon, including: at least one crucible made of quartz for the silicon, removably housed in a cup-shaped graphite container; a fluid-tight openable casing; a top induction coil, set facing, with interposition of a graphite plate, the crucible, a lateral induction coil, set around a side wall of the graphite container, and a bottom induction coil, set facing a bottom wall of the graphite container and vertically mobile for varying the distance from the bottom wall; and first means for a.c. electrical supply of the induction coils separately from one another, and second means for supply of a coolant within respective hollow turns of the induction coils; the bottom induction coil includes four spiral windings, arranged alongside one another; electrical switching means enable in use selective connection of the four windings to one another according to different configurations.Type: ApplicationFiled: October 20, 2010Publication date: December 6, 2012Applicant: SAET S.P.A.Inventors: Fabrizio Dughiero, Michele Forzan, Dario Ciscato, Mariolino Cesano, Fabrizio Crivello, Roberto Bechini
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Publication number: 20120291493Abstract: A consecutive molding method for crystallized glass comprises: a process to obtain molten glass by melting glass raw materials; a process to obtain a band-shaped plate glass by roll forming the molten glass; a crystallization process to obtain a band-shaped crystallized glass plate by conducting thermal treatment on the band-shaped plate glass to crystallize it; and a process to cut the band-shaped crystallized glass plate, wherein the crystallization process includes: a process to form crystal nuclei in the band-shaped plate glass by disposing it in the atmosphere of a crystal nucleus-formation temperature and retaining it at the temperature; a process to raise the temperature of the band-shaped plate glass with crystal nuclei to a crystal-growth temperature; a process to retain the band-shaped plate glass with crystal nuclei at the crystal-growth temperature to produce a band-shaped crystallized glass plate; and a process to slowly cool down the band-shaped crystallized glass plate.Type: ApplicationFiled: March 9, 2012Publication date: November 22, 2012Applicants: Ta Hsiang Containers Ind. Co., Ltd., a Taiwan Corporation, Huzhou Ta Hsiang Glass Products Co., Ltd., a China CorporationInventors: Kuo-Chuan Hsu, Yan-Bin Jiang, Chao Qu
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Patent number: 8241395Abstract: Disclosed are processes for preparing conductive glass-ceramic membranes and methods of using them in hydrogen or proton separation.Type: GrantFiled: June 11, 2008Date of Patent: August 14, 2012Assignee: Schott CorporationInventors: Mark J. Davis, Samuel David Conzone, Paula Vullo
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Publication number: 20120175553Abstract: Method for producing a silicon ingot comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one hydrogen-containing additive to reduce the formation of dislocations, and control of the temperature in the container (3) for the directed solidification of the silicon melt.Type: ApplicationFiled: January 11, 2012Publication date: July 12, 2012Inventors: Andreas Krause, Matthias Wagner, Josef Stenzenberger, Thomas Richter, Gerd Fischer, Mark Hollatz, Silvio Stute, Christian Kusterer, Doreen Nauert, Stefan Proske
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Publication number: 20120167629Abstract: An apparatus for crystallization of silicon includes a crucible for containing silicon, a heating and heat dissipating arrangement provided for melting the silicon contained in the crucible and for subsequently solidifying the molten silicon, and an electromagnetic stirring device provided for stirring the molten silicon in the crucible during the solidification of the molten silicon. A control arrangement is provided for controlling the heating and heat dissipating arrangement to solidify the molten silicon at a specified solidification rate and for controlling the electromagnetic stirring device to stir the molten silicon in response to the specified solidification rate of the molten silicon such that the ratio of a speed of the molten silicon and the specified solidification rate is above a first threshold value.Type: ApplicationFiled: March 15, 2012Publication date: July 5, 2012Inventors: Jan-Erik Eriksson, Olof Hjortstam, Ulf Sand
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Publication number: 20120111058Abstract: One objective of the present invention was to provide a method of continuously forming crystallized glass, so as to reduce the thermal treatment time necessary for crystallizing a belt-shaped glass plate; and to provide an apparatus of continuously forming crystallized glass, so as to shorten the thermal treatment zone necessary for crystallizing a belt-shaped glass plate. A method of continuously forming crystallized glass according to the present invention includes: a melting step of melting a raw glass material to obtain molten glass; a shaping step of rolling the molten glass to form a belt-shaped glass plate; a crystallizing step of retaining the belt-shaped glass plate at a temperature necessary for nuclei formation and crystal growth, thereby forming nuclei and crystallizing the belt-shaped glass plate to a belt-shaped crystallized glass plate, and then slowly cooling the belt-shaped crystallized glass plate; and a cutting step of cutting the belt-shaped crystallized glass plate.Type: ApplicationFiled: September 20, 2011Publication date: May 10, 2012Applicants: Ta Hsiang Containers Ind. Co., Ltd., Huzhou Ta Hsiang Glass Products Co., Ltd.Inventors: Kuo-Chuan Hsu, Yanbin Jiang
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Publication number: 20120114955Abstract: A transparent glass-ceramic materials contains a spinel solid solution as the main crystalline phase and is free of As2O3 and Sb2O3. Corresponding precursor alumino-silicate glasses, articles made of said transparent glass-ceramic materials as well as a method for manufacturing such articles, and structures comprising a sheet made of such glass-ceramic materials and electronic or optoelectronic devices comprising such structures are also disclosed. Some materials disclosed can be used as substrates for high temperature growth of high quality monocrystalline or polycrystalline silicon thin films. Structures including such substrates with such thin films thereon can be used in photovoltaic devices, flat panel devices and liquid crystal devices.Type: ApplicationFiled: November 3, 2011Publication date: May 10, 2012Inventors: Etienne Almoric, Marie Jacqueline Monique Comte
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Publication number: 20120108414Abstract: A method of ceramicizing a floated glass is provided where the glass ceramic material obtained thereby has high stability because of the special quality of the atmosphere in the ceramicizing process. The glass ceramics thus obtained have special surface properties that avoid crack formation. Thereby very high bending tensile strengths are achieved. These glass ceramics can be used as fire protection glass, hot plate of a cooker having a coating on the lower side, safety glass, panes of wood-burning fireplace inserts, in colored form as hot plate of a cooker, base plate, thermally resistant panel lining in furnaces and microwave facilities.Type: ApplicationFiled: November 3, 2011Publication date: May 3, 2012Applicant: SCHOTT AGInventors: Bernd Ruedinger, Friedrich Siebers, Gerhard Lautenschlaeger, Matthias Baesel
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Publication number: 20120094822Abstract: The present invention relates to a method of fabricating an improved lithium silicate glass ceramic and to that material for the manufacture of blocks for dental appliances using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 800° C. indicating that the samples will support the temperature process without shape deformation.Type: ApplicationFiled: December 8, 2011Publication date: April 19, 2012Inventor: Rodolfo Castillo
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Patent number: 8143178Abstract: The present invention discloses a blue transparent glass-ceramic material comprising ?-quartz solid solution as a predominant crystalline phase and process for making same. The glass-ceramic comprises TiO2 as a nucleating agent, sulphur and at least one metal oxide, advantageously MgO and/or ZnO. The process for making the glass-ceramic material comprises including a metal sulphide, such as ZnS and/or MgS, as a reducing agent in melting the precursor glass of the glass-ceramic material.Type: GrantFiled: October 25, 2007Date of Patent: March 27, 2012Assignee: EuroKeraInventor: Lothar Wondraczek
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Patent number: 8141387Abstract: The process of making the glass-ceramic includes ceramicizing a starting glass at a heating or cooling rate during the ceramicization of at least 10 K/min, so that the glass-ceramic contains at least 50% by volume of ferroelectric crystallites with a maximum diameter of from 20 to 100 nm and not more than 10% by volume of nonferroelectric crystallitesis. The glass ceramic produced by the process contains no pores or not more than 0.01% by volume of the pores and a value of e?·V2max of the glass-ceramic is at least 20 (MV/cm)2, wherein e? is the dielectric constant at 1 kHz and Vmax is the breakdown voltage per unit thickness. The ferroelectric crystallites preferably have a perovskite structure and are composed of substantially pure or doped BaTiO3 and/or BaTi2O5.Type: GrantFiled: February 25, 2009Date of Patent: March 27, 2012Assignee: Schott AGInventors: Martin Letz, Mark J. Davis, Bernd Ruedinger, Bernd Hoppe, Bianca Schreder, Maria-Louisa Aigner, Daniela Seiler
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Flowable Chips and Methods for the Preparation and Use of Same, and Apparatus for Use in the Methods
Publication number: 20110286906Abstract: A method for recharging a crucible with polycrystalline silicon comprises adding flowable chips to a crucible used in a Czochralski-type process. Flowable chips are polycrystalline silicon particles made from polycrystalline silicon prepared by a chemical vapor deposition process, and flowable chips have a controlled particle size distribution, generally nonspherical morphology, low levels of bulk impurities, and low levels of surface impurities. Flowable chips can be added to the crucible using conventional feeder equipment, such as vibration feeder systems and canister feeder systems.Type: ApplicationFiled: August 3, 2011Publication date: November 24, 2011Inventors: Arvid Neil Arvidson, Terence Lee Horstman, Michael John Molnar, Chris Tim Schmidt, Roger Dale Spencer, JR. -
Publication number: 20110281099Abstract: A method is described for making a float glass convertible into a glass ceramic, by which a largely crystal fault-free glass can be produced. In this method the glass is cooled from a temperature (TKGmax), at which a crystal growth rate is at a maximum value (KGmax), to another temperature (TUEG), at which practically no more crystal growth occurs, with a cooling rate, KR, in ° C. min?1 according to: KR UEG KGmax ? ? ? ? T UEG KGmax 100 · KGmax , wherein ?T=TKGmax?TUEG, and KGmax=maximum crystal growth rate in ?m min?1. The float glass has a thickness below an equilibrium thickness, a net width of at least 1 m and has no more than 50 crystals with a size of more than 50 ?m, especially no crystals with a size of more than 10 ?m, per kilogram of glass within the net width.Type: ApplicationFiled: July 27, 2011Publication date: November 17, 2011Inventors: Gerhard Lautenschlaeger, Andreas Langsdorf, Ulrich Lange, Bernd Ruedinger, Klaus Schneider, Michael Jacquorie, Friedrich Siebers, Wolfgang Schmidbauer
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Patent number: 8051678Abstract: The present invention relates to a glass substrate of which the outer periphery portion is unprocessed. The present invention also relates to a manufacturing method for a glass substrate of which the outer periphery portion is unprocessed, characterized in that a first lapping process, a second lapping process, a polishing process and a washing process are carried out after a press molding process is carried out so as to compress glass between an upper mold and a lower mold without regulating the edge surface of the outer periphery portion of the glass and, then, a crystallization process or an annealing process is carried out.Type: GrantFiled: April 16, 2004Date of Patent: November 8, 2011Assignee: Minolta Co., Ltd.Inventors: Shiro Nishimoto, Mitsugu Tokunaga, Hideki Kawai, Toshiharu Mori, Shinji Fukumoto
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Publication number: 20110212827Abstract: Process for manufacturing a product, including the following successive steps: a) mixing raw materials to form a starting feedstock; b) melting the starting feedstock so as to form a molten liquid; c) solidifying the molten liquid so as to obtain a fused product comprising crystals linked by a glassy phase; and d) crystallization heat treatment of the glassy phase of said fused product, in which the composition of the starting feedstock is adapted in order to manufacture a product having the following chemical composition, as weight percentages based on the oxides, and for a total of 100%: 40%?(ZrO2+HfO2)?94%; 4%<CeO2<31%; 0%?Y2O3; 0%?Al2O3; 2%?SiO2; 0%?MgO; 0%?TiO2; and other oxides?1%.Type: ApplicationFiled: October 16, 2009Publication date: September 1, 2011Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROInventors: Emmanuel Pierre Marcel Nonnet, Yves Marcel Leon Boussant Roux, Charlotte Catteau, Sophie Papin, Gilles Querel
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Publication number: 20110189412Abstract: The present invention relates to a vitreous material possessing visual effects, particularly of fluorescence, when it is lit by ultraviolet light in the visible spectrum. These glasses are particularly applicable to the manufacture of decorative objects.Type: ApplicationFiled: June 24, 2009Publication date: August 4, 2011Inventors: Olivier Renard, Céline Noel
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Publication number: 20110133118Abstract: The crystallized glass according to the present invention contains a LiVOPO4 crystal. The LiVOPO4 crystal is preferably a ?-LiVOPO4 crystal. In addition, the crystallized glass according to the present invention preferably contains a composition of Li2O: 25-60%, V2O5: 20-40% and P2O5: 20-40% in terms of mol %. The crystallized glass according to the present invention is suitable as a positive electrode material for lithium ion secondary batteries. The present invention provides a substance suitable as a positive electrode material for a lithium secondary battery having good battery properties and a method for producing the substance.Type: ApplicationFiled: May 13, 2009Publication date: June 9, 2011Inventors: Tsuyoshi Honma, Kenta Nagamine, Takayuki Komatsu, Tomohiro Nagakane, Akihiro Sakamoto
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Publication number: 20110072853Abstract: A formation of internally nucleated glass ceramics articles that can be heated in the 1350-1450° C. range for extended periods of time without significant deformation or change in shape is disclosed. The predominant crystal phase of these glass ceramics is celsian (BaAl2Si2O8) or its strontium equivalent (SrAl2Si2O8), or solid solutions or mixtures of these compositions, all belonging to the feldspar mineral group.Type: ApplicationFiled: December 1, 2010Publication date: March 31, 2011Inventor: George H. Beall
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Publication number: 20110009254Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.Type: ApplicationFiled: July 9, 2010Publication date: January 13, 2011Applicant: Ivoclar Vivadent AGInventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Holand, Elke Apel, Christian Ritzberger, Dmitri Brodkin
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Patent number: 7846857Abstract: The invention relates to dental glass-ceramics and a process for producing them and their use, with these comprising at least one crystal phase containing xenotime or monazite or mixtures thereof.Type: GrantFiled: May 31, 2006Date of Patent: December 7, 2010Assignee: Ivoclar Vivadent AGInventors: Wolfram Höland, Christian Ritzberger, Volker Rheinberger, Elke Apel
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Publication number: 20100257899Abstract: The invention relates to a method for melting vitrifiable materials in a low-capacity oven, wherein at least part of the melting energy is supplied by two oxy-burners projecting into the melting chamber through the upstream wall and arranged on opposite sides of a vertical plane in which a longitudinal axis of the melting chamber is situated, in such a way as to create two flames, the respective injection axes thereof crossing at a distance from the upstream wall, between ? and ¾ of the length L of the melting chamber.Type: ApplicationFiled: July 10, 2008Publication date: October 14, 2010Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Philippe Beaudoin, Gabriel Constantin, Pascal Duperray, Son Ha Giang, Benoit Grand, Lu Jarry, Robert Kalcevic, Bertrand Leroux, Alban Poirier, Remi Pierre Tsiava
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Publication number: 20100236473Abstract: In order to provide a vitreous silica crucible which does not employ a crystallization accelerator but is difficult to deform during its use even under high temperature, and is easily manufactured, there is provided a vitreous silica crucible for pulling single-crystal silicon wherein the outer surface layer is formed of a bubble-containing vitreous silica layer, the inner surface layer is formed of a vitreous silica layer whose bubbles are invisible to the naked eye, a surface of the outer surface layer includes an unmelted or half-melted silica layer (abbreviated as a half-melted silica layer), and the center line average roughness (Ra) of the half-melted silica layer is 50 to 200 ?m, also preferably, and the thickness of the half-melted silica layer is 0.5 to 2.0 mm.Type: ApplicationFiled: September 29, 2008Publication date: September 23, 2010Applicant: JAPAN SUPER QUARTZ CORPORATIONInventor: Hiroshi Kishi
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Publication number: 20100229599Abstract: In order to provide method and apparatus for manufacturing a vitreous silica crucible with little mixing of foreign matter and stable arc during arc melting, the method and apparatus for manufacturing a vitreous silica crucible have a device which blows off air from the side of arc electrodes toward a melting space of a mold, and air discharge ports which discharge the air within the heating furnace, and perform forced supply of air into the melting space during melting to make the atmospheric pressure of the melting space higher than the surroundings, and preferably, form an air pressure difference of 100 Pa or more between the melting space and the surroundings, thereby performing melting.Type: ApplicationFiled: July 25, 2008Publication date: September 16, 2010Applicant: JAPAN SUPER QUARTZ CORPORATIONInventors: Takeshi Fujita, Minoru Kanda