Calcium Oxide Containing Patents (Class 501/70)
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Patent number: 8492297Abstract: A device including a glass substrate made of a soda lime silica glass composition of: SiO2 (50˜75 wt %); Na2O (1˜8 wt %); K2O (1˜12 wt %); CaO (1˜12 wt %); ZrO2 (0˜8 wt %); SrO (0˜15 wt %); BaO (0˜12 wt %); MgO (0˜10 wt %); Al2O3 (0˜12 wt %); B2O3 (0˜3 wt %), wherein the total amount of Na2O and K2O is in the range of 5˜15 wt %, the total amount of CaO, MgO, SrO and BaO is in the range of 10˜25 wt %.Type: GrantFiled: August 31, 2010Date of Patent: July 23, 2013Assignee: SAGE Electrochromics, Inc.Inventors: Jun-Young Lee, Sei-Woong Yoo, Doo-Sang Ko, Marc Maurer
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Publication number: 20130178355Abstract: This invention relates to a glass substrate having a high glass transition temperature, a thermal expansion coefficient near that of soda-lime glass, and a low specific gravity, which is not prone to yellowing, and which also has good solubility and high productivity. The glass substrate has a composition in mass % in terms of oxide amount which is SiO2: 55-65%, Al2O3: 4-8%, MgO: 6-9%, CaO: 0.1-5%, SrO: 0.5-6%, BaO: 0-2%, MgO+CaO+SrO+BaO: 6.6-19%, Na2O: 0-5%, K2O: 9.5-21%, Na2O+K2O: 10-22%, ZrO2: 0.5-5%, and Fe2O3: 0.06-0.15%, has a specific gravity of 2.7 or less, an average thermal expansion coefficient at 50-350° C. of 80×10?7/° C. to 90×10?7/° C., and a glass transition temperature of at least 640° C., wherein, defining ? as viscosity, the temperature satisfying log ?=2 is at most 1550° C., and the yellow coloring b* of the glass surface is at most 8.Type: ApplicationFiled: December 17, 2012Publication date: July 11, 2013Applicant: ASAHI GLASS COMPANY, LIMITEDInventor: ASAHI GLASS COMPANY, LIMITED
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Patent number: 8476175Abstract: The invention relates to glass strands especially for the production of composites having an organic and/or inorganic matrix, the composition of which strands comprises the following constituents in the limits defined below, expressed as percentages by weight: SiO2 50-65% Al2O3 12-23% SiO2 + Al2O3 ??>79% CaO ?1-10% MgO ?6-12% Li2O ?1-3%, preferably 1-2% BaO + SrO ?0-3% B2O3 ?0-3% TiO2 ?0-3% Na2O + K2O ??<2% F2 ?0-1% Fe2O3 ??<1%. These strands are made of a glass offering an excellent compromise between its mechanical properties, represented by the specific Young's modulus, and its melting and fiberizing conditions.Type: GrantFiled: April 22, 2009Date of Patent: July 2, 2013Assignee: Saint-Gobain AdforsInventor: Emmanuel Lecomte
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Publication number: 20130160845Abstract: A glass substrate for a CIGS solar cell, having high cell efficiency and high glass transition temperature is provided. The glass substrate for a vapor-deposited CIGS film solar cell has a glass transition temperature of at least 580° C. and an average thermal expansion coefficient of from 70×10?7 to 100×10?7/° C., wherein the ratio of the average total amount of Ca, Sr and Ba within from 10 to 40 nm in depth from the surface of the glass substrate to the total amount of Ca, Sr and Ba at 5,000 nm in depth from the surface of the glass substrate is at most 0.35, and the ratio of the average Na amount within from 10 to 40 nm in depth from the surface of the glass substrate after heat treatment to such average Na amount before the heat treatment is at least 1.5.Type: ApplicationFiled: January 28, 2013Publication date: June 27, 2013Applicant: ASAHI GLASS COMPANY, LIMITEDInventor: ASAHI GLASS COMPANY, LIMITED
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Patent number: 8461070Abstract: Flat glass composition comprising the following (expressed as percentages by weight): SiO2 60 75%; Al2O3 0 5%; Na2O 10 18%; K2O 0 5.5%; CaO 0 5%; MgO 0-2%; SO3 0 1%; Fe2O3 (total iron)>0.01%; TiO2 0-1% and one or both of: SrO 0-15%; BaO 0-15% with the proviso that the summed amount of SrO and BaO is greater than 4%. A preferred composition comprises: SiO2 65-74%; Al2O3 0-3%; Na2O 13 16%; K2O 0-2%; CaO 1-4.9%; MgO 0-2%; SO3 0-1%; Fe2O3 (total iron)>0.01%; TiO2 0 1%; BaO 4-10%; SrO 0-5%, wherein the summed amount of the alkaline earth metal constituents is in the range 10-13% and the summed amount of the alkali metal constituents is in the range 14-16%. The ferrous level of the glass may be greater than or equal to 28%, its performance in a thickness of 5 mm or less may be greater than or equal to 29 at LTA?70%, and greater than or equal to 27 at LTA?75%, and its liquidus temperature may be less than or equal to 980° C.Type: GrantFiled: March 20, 2008Date of Patent: June 11, 2013Assignee: Pilkington Group LimitedInventors: John Buckett, Keith Haughey, Neil McSporran
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Patent number: 8450226Abstract: Disclosed are glass compositions containing Beryllia in addition to various proportions of Silica, Alumina, Calcium, Magnesia, Sodium, Potassium, Iron, Titania, Zirconia, Manganese and/or Phosphorous. Fibers were produced from the disclosed compositions using standard glass processing equipment. These fibers yielded high temperature fibers having low density, high strength, high modulus, excellent glass surfaces requiring very little bonding material to hold the fibers together. Bio solubility is preferably promoted by ensuring that only trace quantities of alumina are present. Fibers having those properties are particularly suitable for producing high temperature glass fiber insulation for use in aircraft and other vehicles.Type: GrantFiled: November 18, 2010Date of Patent: May 28, 2013Assignee: Glass IncorporatedInventor: Albert Lewis
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Patent number: 8440583Abstract: A blue colored, infrared and ultraviolet absorbing glass composition uses a standard soda-lime-silica glass base composition and additionally iron, cobalt, and additional colorants selected from the group of Er2O3, Cr2O3, CuO, NiO, TiO2, Nd2O3 and combinations thereof. The glass of the present invention has a luminous transmittance of up to 60 percent, a dominant wavelength in the range of 480 to 489 nanometers and an excitation purity of at least 8 percent at a thickness of 0.160 inches (4.06 millimeters). The glass composition can form transparent glass panels that have varying limited LTA from one another as panel sets for mounting in automobiles.Type: GrantFiled: May 27, 2010Date of Patent: May 14, 2013Assignee: PPG Industries Ohio, Inc.Inventors: Larry J. Shelestak, Mehran Arbab
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Patent number: 8431503Abstract: The present invention provides an alkali-free glass having a high strain point, a low viscosity and low devitrification, which is easily subjected to float molding and fusion molding. The glass herein has a strain point of 725° C. or higher, an average thermal expansion coefficient at 50 to 300° C. of 30×10?7 to 40×10?7/° C., a temperature T2 at which a glass viscosity becomes 102 dPa·s of 1,710° C. or lower, a temperature T4 at which a glass viscosity becomes 104 dPa·s of 1,330° C. or lower, a glass surface devitrification temperature (Tc) of 1,330° C. or lower, and a glass internal devitrification temperature (Td) of 1,330° C. or lower.Type: GrantFiled: January 3, 2012Date of Patent: April 30, 2013Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Yuichi Kuroki, Manabu Nishizawa, Tomoyuki Tsujimura
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Publication number: 20130101853Abstract: Alkaline earth alumino-silicate glass compositions with improved chemical and mechanical durability and pharmaceutical packages comprising the same are disclosed herein. In one embodiment a glass composition may include from about 65 mol. % to about 75 mol. % SiO2; from about 6 mol. % to about 12.5 mol. % Al2O3; and from about 5 mol. % to about 12 mol. % alkali oxide. The alkali oxide may include Na2O and K2O. The K2O may be present in an amount less than or equal to 0.5 mol. %. The glass composition may also include from about 8.0 mol. % to about 15 mol. % of at least one alkaline earth oxide. The glass composition is susceptible to strengthening by ion-exchange thereby facilitating chemically strengthening the glass to improve the mechanical durability.Type: ApplicationFiled: October 25, 2012Publication date: April 25, 2013Inventors: Melinda Ann Drake, Robert Michael Morena
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Publication number: 20130101766Abstract: The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol. % to about 80 mol. % SiO2; from about 3 mol. % to about 13 mol. % alkaline earth oxide; X mol. % Al2O3; and Y mol. % alkali oxide. The alkali oxide may include Na2O in an amount greater than about 8 mol. %. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed from the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.Type: ApplicationFiled: October 25, 2012Publication date: April 25, 2013Inventors: Paul Steven Danielson, Steven Edward DeMartino, Melinda Ann Drake, Robert Michael Morena, Santona Pal, Robert Anthony Schaut
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Publication number: 20130102454Abstract: The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol. % to about 80 mol. % SiO2; from about 3 mol. % to about 13 mol. % alkaline earth oxide; X mol. % Al2O3; and Y mol. % alkali oxide. The alkali oxide may include Na2O in an amount greater than about 8 mol. %. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed from the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.Type: ApplicationFiled: October 25, 2012Publication date: April 25, 2013Inventors: Paul Steven Danielson, Steven Edward DeMartino, Melinda Ann Drake, Robert Michael Morena, Santona Pal, Robert Anthony Schaut
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Patent number: 8415013Abstract: A strengthened glass article having a central tension that is below a threshold value above which the glass exhibits frangible behavior. The central tension varies non-linearly with the thickness of the glass. The glass article may be used as cover plates or windows for portable or mobile electronic devices such as cellular phones, music players, information terminal (IT) devices, including laptop computers, and the like.Type: GrantFiled: April 20, 2012Date of Patent: April 9, 2013Assignee: Corning IncorporatedInventors: Kristen L Barefoot, James Joseph Price, Jose Mario Quintal, Ronald Leroy Stewart
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Patent number: 8394516Abstract: The present invention relates to recording glass substrates molar percentages: 56-75 SiO2, 1-11 Al2O2, more than 0-4 Li2O, 1-15 Na2O. more than 0 less than 3 K2O, no BaO. total Li2O, Na2O and K2O 6-15, (Li2O Na2O) less than 0.50, {K2O/(Li2O, Na2O and K2O)} equal or less than 0.13, total MgO, CaO and SrO 10-30, MgO and CaO 10-30, {(MgO+CaO)/(MgO+CaO+SrO)} equal or more than 0.86, alkali oxides to alkaline earth oxides equal to or more than 0.50. total ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5 more than 0 equal to or less than 10, molar ratio {(ZrO2, TiO2, Y2O3, La2O3, Gd2O3, Nb2O5, and Ta2O5)/Al2O2 equal or more than 0.40, Tg equal to or higher than 600° C., average coefficient linear expansion equal or higher than 70×10?7/°C. at 100-300° C. and Young's modulus equal to or higher than 80 GPa.Type: GrantFiled: November 8, 2010Date of Patent: March 12, 2013Assignee: Hoya CorporationInventors: Naomi Matsumoto, Kinobu Osakabe, Yoichi Hachitani
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Publication number: 20130059716Abstract: The invention relates to an alumino-silicate glass which has a thermal expansion coefficient in the range of 8 to 10×10?6/K in a temperature range of 20 to 300° C., a transformation temperature Tg in a range of 580° C. to 640° C., and a processing temperature VA in a range of 1065° C. to 1140° C. and which can therefore be used as an alternative for soda lime glasses. An object of the invention is also the use of the inventive glasses in applications where a high temperature stability of the glasses is advantageous, in particular as substrate glass, superstrate glass and/or cover glass in the field of semiconductor technology, preferably for Cd—Te or for CIS or CIGS photovoltaic applications and for other applications in solar technology.Type: ApplicationFiled: February 29, 2012Publication date: March 7, 2013Inventors: Jörg H. Fechner, Franz Ott, Erhard Dick, Christof Kass
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Patent number: 8383532Abstract: The glass flake of the present invention has a composition that includes, in terms of mass %, 60<SiO2?65, 8?Al2O3?15, 47?(SiO2—Al2O3)?57, 1?MgO?5, 18?CaO?30, 0<Li2O?4, 0<(Li2O+Na2O+K2O)?4, and 0?TiO2?5, and that is substantially free from B2O3, F, ZnO, BaO, SrO, and ZrO2.Type: GrantFiled: June 21, 2007Date of Patent: February 26, 2013Assignee: Nippon Sheet Glass Company, LimitedInventors: Kosuke Fujiwara, Akihiro Koyama, Koichi Sakaguchi
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Patent number: 8383531Abstract: A glass flake of the present invention has a composition that includes, in terms of mass %, 59?SiO2<65, 8?Al2O3?15, 47<(SiO2—Al2O3)?57, 1?MgO?5, 20?CaO?30, 0<(Li2O+Na2O+K2O)<2, and 0?TiO2?5 and that is substantially free from B2O3, F, ZnO, BaO, SrO, and ZrO2.Type: GrantFiled: December 22, 2005Date of Patent: February 26, 2013Assignee: Nippon Sheet Glass Company, LimitedInventors: Kosuke Fujiwara, Akihiro Koyama
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Patent number: 8377834Abstract: A glass composition for substrates excellent in productivity is provided by lowering the high temperature viscosity while securing characteristics and quality required for FPD substrates, particularly for PDP substrates. A glass composition for substrates, which is characterized by comprising, as represented by mass% based on oxides, from 55 to 75% of SiO2, from 5 to 15% of Al2O3, from 4 to 18% of MgO, from 3 to 12% of CaO, from 4 to 18% of SrO, from 0 to 20% of BaO, from 6 to 20% of Na2O+K2O, from 0.5 to 6% of ZrO2 and from 18 to 25% of MgO+CaO+SrO+BaO, as a glass matrix composition, and containing from 0.001 to 0.6% of SO3, and which is further characterized in that when the viscosity is represented by ?, the temperature satisfying log?=2 is at most 1,545° C. and the devitrification temperature is at most the temperature satisfying log?=4, the thermal expansion coefficient is from 75×10?7 to 90×10?7/° C., the specific gravity is at most 2.8, and the glass transition point is at least 600° C.Type: GrantFiled: February 4, 2010Date of Patent: February 19, 2013Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Tetsuya Nakashima, Kei Maeda
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Publication number: 20130040169Abstract: Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 ?m?1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of ?5° C. or lower, of 7 ?m?1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO2, 2 to 45% of B2O3 and/or Al2O3 and 0 to 40% of R?2O in which R? is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO2, B2O3, Al2O3 and R?2O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.Type: ApplicationFiled: June 7, 2012Publication date: February 14, 2013Applicant: HOYA CORPORATIONInventors: Mikio Ikenishi, Atsuko Morita, Xuelu Zou
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Publication number: 20130037105Abstract: A compositional range of high strain point and/or intermediate expansion coefficient alkali metal free aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates or superstrates for photovoltaic devices, for example, thin film photovoltaic devices such as CdTe or CIGS photovoltaic devices or crystalline silicon wafer devices. These glasses can be characterized as having strain points ?600° C., thermal expansion coefficient of from 35 to 50×10?7/° C.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Inventors: Bruce Gardiner Aitken, James Edward Dickinson, JR., Timothy James Kiczenski, John Christopher Mauro, Adama Tandia
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Publication number: 20130038940Abstract: A soda-lime-silica glass for solar collector cover plates and solar mirrors has less than 0.010 weight percent total iron as Fe2O3, a redox ratio of less than 0.350, less than 0.0025 weight percent CeO2, and spectral properties that include a visible transmission, and a total solar infrared transmittance, of greater than 90% at a thickness of 5.5 millimeters, and reduced solarization. In one non-limiting embodiment of invention, the glass is made by heating a pool of molten soda-lime-silica with a mixture of combustion air and fuel gas having an air firing ratio of greater than 11, or an oxygen firing ratio of greater than 2.31. In another non-limiting embodiment of the invention, streams of oxygen bubbles are moved through a pool of molten glass. In both embodiments, the oxygen oxidizes ferrous iron to ferric iron to reduce the redox ratio.Type: ApplicationFiled: October 17, 2012Publication date: February 14, 2013Applicant: PPG INDUSTRIES OHIO, INC.Inventor: PPG INDUSTRIES OHIO, INC.
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Patent number: 8367208Abstract: The invention is directed to a high strength, chemically toughened protective glass article, the glass article having a high damage tolerance threshold of at least 1500 g as measured by the lack of radial cracks when the load is applied to the glass using a Vickers indenter; preferably greater than 2000 g s measured by the lack of initiation of radial cracks when the load is applied to the glass using a Vickers indenter.Type: GrantFiled: February 6, 2009Date of Patent: February 5, 2013Assignee: Corning IncorporatedInventors: Gregory Scott Glaesemann, James Joseph Price, Robert Sabia, Nagaraja Shashidhar
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Patent number: 8367574Abstract: The alkaline earth metal aluminosilicate glass for light bulbs with molybdenum parts has a composition (in percent by weight on an oxide basis) of SiO2, 56-60; Al2O3, 17-18; B2O3, 0.5-2; MgO, 0.5-2; CaO, >14-15.5; SrO, 0-3; BaO, 6-8; ZrO2, 0-5; CeO2, 0-0.1 and TiO2, 0-0.5.Type: GrantFiled: August 24, 2010Date of Patent: February 5, 2013Assignee: Schott AGInventors: Erhard Dick, Ingo Kipnik
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Patent number: 8367571Abstract: The invention relates to reinforcing glass strands, the composition of which comprises the following constituents within the limits defined below expressed as percentages by weight: SiO2 62-72% Al2O3 ?2-10% CaO ?7-20% MgO 1-7% Na2O + K2O + Li2O ??10-14.5% Li2O 0-2% BaO + SrO + ZnO 0-4% B2O3 0-4% F2 0-2% As2O3 ??0-0.15% These strands are composed of a low-cost glass offering an excellent compromise between the mechanical properties represented by the tensile strength and the fiberizing conditions. The invention also relates to the composites based on organic and/or inorganic material(s) and the aforementioned glass strands.Type: GrantFiled: October 30, 2008Date of Patent: February 5, 2013Assignee: Saint-Gobain Technical Fabrics EuropeInventors: Anne Berthereau, Emmanuelle Picard, Jerome Lalande
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Publication number: 20130017380Abstract: Provided is a tempered glass having a compression stress layer in a surface thereof, comprising, as a glass composition in terms of mol %, 50 to 75% of SiO2, 3 to 13% of Al2O3, 0 to 1.5% of B2O3, 0 to 4% of Li2O, 7 to 20% of Na2O, 0 to 10% of K2O, 0.5 to 13% of MgO, 0 to 6% of CaO, and 0 to 4.5% of SrO, and being substantially free of As2O3, Sb2O3, PbO, and F.Type: ApplicationFiled: August 8, 2012Publication date: January 17, 2013Inventors: Takashi MURATA, Takako TOJYO, Kosuke KAWAMOTO, Yuusuke TOMITA
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Publication number: 20130011650Abstract: To provide glass to be used for chemically tempered glass which is hardly broken even when flawed. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO2, from 3 to 15% of Al2O3, from 5 to 15% of Na2O, from 0 and less than 2% of K2O, from 0 to 15% of MgO and from 0 to 1% of ZrO2, and has a total content SiO2+Al2O3 of SiO2 and Al2O3 of at most 88%.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Asahi Glass Company, LimitedInventors: Shusaku Akiba, Kazutaka Ono, Jun Endo, Shigeki Sawamura, Tetsuya Nakashima, Yuichi Kuroki
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Publication number: 20130011607Abstract: Provided is a high refractive index glass, comprising, as a glass composition in terms of mass %, 0 to 10% of B2O2, 0.001 to 35% of SrO, 0.001 to 30% of ZrO2+TiO2, and 0 to 10% of La2O2+Nb2O5, having a mass ratio of BaO/SrO of 0 to 40 and a mass ratio of SiO2/SrO of 0.1 to 40, and having a refractive index nd of 1.55 to 2.3.Type: ApplicationFiled: May 18, 2012Publication date: January 10, 2013Inventors: Atsushi MUSHIAKE, Takashi MURATA, Tomoki YANASE
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Patent number: 8349455Abstract: Glass comprising, as represented by mole percentage based on the following oxides, from 50 to 75% of SiO2, from 1 to 15% of Al2O3, from 6 to 21% of Na2O, from 0 to 15% of K2O, from 0 to 15% of MgO, from 0 to 20% of CaO, from 0 to 21% of ?RO (wherein R is Mg, Ca, Sr, Ba and/or Zn), from 0 to 5% of ZrO2, from 1.5 to 6% of Fe2O3, and from 0.1 to 1% of Co3O4.Type: GrantFiled: August 18, 2010Date of Patent: January 8, 2013Assignee: Asahi Glass Company, LimitedInventors: Yuki Kondo, Hiroyuki Ohkawa, Makoto Sano, Kazutaka Hayashi, Shusaku Akiba
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Patent number: 8349454Abstract: An object of the invention is to obtain a glass substrate having high mechanical strength by reconciling suitability for ion exchange and devitrification proof in a glass. The strengthened glass substrate of the invention is a strengthened glass substrate having a compression stress layer in the surface thereof, the glass substrate having a glass composition including, in terms of % by mass, 40-70% of SiO2, 12-25% of Al2O3, 0-10% of B2O3, 0-8% of Li2O, 6-15% of Na2O, 0-10% of K2O, 13-20% of Li2O+Na2O+K2O, 0-3.9% of MgO, 0-5% of CaO, 0-5% of ZnO, 0-6% of ZrO2, and 0-5% of SrO+BaO, the value of (MgO+ZrO2+ZnO)/(MgO+ZrO2+ZnO+Al2O3) in terms of mass proportion being from 0.25 to 0.45. The above-mentioned strengthened glass can be produced by melting raw glass materials mixed together so as to result in the given glass composition, forming the melt into a sheet by an overflow downdraw process, and then conducting an ion exchange treatment to form a compression stress layer in the glass sheet surface.Type: GrantFiled: June 3, 2008Date of Patent: January 8, 2013Assignee: Nippon Electric Glass Co., Ltd.Inventors: Takashi Murata, Hiroki Yamazaki
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Patent number: 8349751Abstract: A glass composition for substrates having good polishability while securing characteristics for FPD substrates, especially for PDP substrates, from which a glass substrate having excellent polishing workability and productivity can be obtained, is provided. A glass composition for substrates, which is characterized by comprising, as represented by mass % based on oxides, from 55 to 75% of SiO2, from 5 to 15% of Al2O3, from 0 to 4% of MgO, more than 5.5% and at most 12% of CaO, from 5 to 18% of SrO, from 0 to 13% of BaO, from 0.5 to 6% of ZrO2, from 0 to 10% of Na2O, from 0 to 15% of K2O, from 6 to 20% of Na2O+K2O, from 17 to 25% of MgO+CaO+SrO+BaO, and from 15 to 25% of CaO+SrO, as a glass matrix composition; and having a glass transition point of at least 600° C., an average thermal expansion coefficient of from 75×10?7 to 90×10?7/° C. within a range of from 50 to 350° C., and an abrasion resistance of at least 98.Type: GrantFiled: April 29, 2010Date of Patent: January 8, 2013Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Tetsuya Nakashima
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Publication number: 20130004758Abstract: An aluminosilicate glass article having a high compressive stress layer. The glass article comprises at least about 50 mol % SiO2 and at least about 11 mol % Na2O, and has a layer under a compressive stress of at least about 900 MPa and the depth of layer that extends at least about 30 ?m from the surface of the glass article into the glass. A method of making such a glass article is also provided.Type: ApplicationFiled: June 26, 2012Publication date: January 3, 2013Inventors: Matthew John Dejneka, Adam James Ellison, John Christopher Mauro
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Patent number: 8338524Abstract: Disclosed is a glass composition which can be suitably used as a glass filler to be blended into a polycarbonate resin. This glass composition contains, in mass %, 50?SiO2?60, 8?Al2O3?15, 0?MgO?10, 10?CaO?30, 0?Li2O+Na2O+K2O<2, and 5<TiO2?10, and does not substantially contain B2O3, F, ZnO, SrO, BaO and ZrO2.Type: GrantFiled: June 17, 2008Date of Patent: December 25, 2012Assignee: Nippon Sheet Glass Company, LimitedInventors: Kosuke Fujiwara, Akihiro Koyama
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Publication number: 20120318356Abstract: A photovoltaic cell, for example a thin-film photovoltaic cell, having a substrate glass made of aluminosilicate glass, has a glass composition which has SiO2 and Al2O3 as well as the alkaline oxide Na2O and the alkaline earth oxides CaO, MgO, and BaO, and optionally further components. The glass composition includes 10 to 16 wt.-% Na2O, >0 to <5 wt.-% CaO, and >1 to 10 wt.-% BaO, and the ratio of CaO:MgO is in the range of 0.5 to 1.7. The aluminosilicate glass used is crystallization stable because of the selected quotient of CaO/MgO and has a transformation temperature >580° C. and a processing temperature <1200° C. Therefore, it represents a more thermally stable alternative to soda-lime glass. The aluminosilicate glass is used as a substrate glass, superstrate glass, and/or cover glass for a photovoltaic cells, for example for thin-film photovoltaic cells, in particular those based on semiconductor composite material, such as CdTe, CIS, or CIGS.Type: ApplicationFiled: July 27, 2012Publication date: December 20, 2012Inventors: Jörg Hinrich Fechner, Christof Kass, Franz Ott
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Patent number: 8334228Abstract: This invention involves a fiberglass composition containing the following components: SiO2, Al2O3, CaO, MgO, B2O3, F2, TiO2, K2O, Na2O, Fe2O3 and SO3. The weight percentage of each of the components are as follows: SiO2 58˜65%, CaO 20˜26%, Al2O3 9˜17%, MgO 0.5˜1%, B2O3 0˜5%, F2 0˜1%, TiO2 0.1˜1%, K2O+Na2O 0˜0.8%, Fe2O3 0.1˜0.5%, SO3 0˜0.6%. The ternary system, SiO2—Al2O3—CaO, is basis of the fiberglass composition in this invention, which also has low quantities of MgO and B2O3. In addition, the total amount of alkaline earth oxide and the proportional relationship between MgO and CaO are rationally designed, which helps to improve the mechanical strength, heat resistance, and chemical stability of the glass. It also has excellent manufacturing performance. Moreover, the raw materials of the fiberglass composition in this invention are low in cost, and the invention meets environmental protection requirements.Type: GrantFiled: December 14, 2009Date of Patent: December 18, 2012Assignee: Jushi Group Co. Ltd.Inventors: Yuqiang Zhang, Guorong Cao, Bing Zhang, Lin Zhang, Wenzhong Xing, Guijiang Gu
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Publication number: 20120309607Abstract: The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.Type: ApplicationFiled: December 23, 2010Publication date: December 6, 2012Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., DEGUDENT GMBH, VITA ZAHNFABRIK H. RAUTER GMBH & CO. KGInventors: Bernhard Durschang, Jorn Probst, Norbert Thiel, Joachim Bibus, Markus Vollmann, Udo Schusser
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Publication number: 20120308803Abstract: A silicate glass that is tough and scratch resistant. The toughness is increased by minimizing the number of non-bridging oxygen atoms in the glass. In one embodiment, the silicate glass is an aluminoborosilicate glass in which ?15 mol %?(R2O+R?O—Al2O3—ZrO2)—B2O3?4 mol %, where R is one of Li, Na, K, Rb, and Cs, and R? is one of Mg, Ca, Sr, and Ba.Type: ApplicationFiled: August 17, 2012Publication date: December 6, 2012Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez, Robert Michael Morena
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Patent number: 8324124Abstract: A process for producing a glass substrate, which includes forming molten glass obtained by melting raw materials into a glass ribbon in a float bath, annealing the glass ribbon by a cooling apparatus, and cutting the glass ribbon to form the glass substrate, where the hydrogen concentration in the atmosphere of a float bath exceeds 3%, and the glass retention time in the float bath is from 4 to 15 minutes.Type: GrantFiled: June 20, 2011Date of Patent: December 4, 2012Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Yuichi Kuroki, Kei Maeda
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Patent number: 8324123Abstract: To provide a glass plate which has a low B2O3 content and which can be used as a glass plate for e.g. an LCD panel. A glass plate which comprises, as a glass matrix composition as represented by mass % based on oxide, from 53 to 74 mass % of SiO2, from 15 to 23 mass % of Al2O3, from 0 to 3 mass % of B2O3, from 2 to 17 mass % of MgO, from 0 to 12 mass % of CaO, from 0 to 6 mass % of SrO, from 6 to 28 mass % of MgO+CaO+SrO, from 0 to 9 mass % of Na2O, from 0 to 6 mass % of K2O and from 0.8 to 11 mass % of Na2O+K2O, contains from 100 to 500 ppm of SO3, has an average coefficient of thermal expansion from 50 to 350° C. of at most 60×10?7/° C., and has a strain point of at least 600° C.Type: GrantFiled: January 26, 2010Date of Patent: December 4, 2012Assignee: Asahi Glass Company, LimitedInventors: Yuya Shimada, Manabu Nishizawa, Junichiro Kase
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Patent number: 8318620Abstract: The invention relates to a glass yarn capable of being obtained by a method consisting of mechanically drawing molten glass threads flowing from orifices disposed at the base of a die, of which the chemical composition is substantially free from boron oxide and comprises the following constituents within the limits defined hereinafter expressed in percentages by weight: SiO2 40 to 50 Al2O3 18 to 28 CaO 4 to 15 MgO 0 to 6 Na2O 10 to 14 Na2O + K2O + Li2O 13 to 20 It also relates to composites containing such yarns.Type: GrantFiled: June 25, 2008Date of Patent: November 27, 2012Assignee: Saint-Gobain Technical Fabrics EuropeInventors: Anne Berthereau, Jerome Lalande
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Patent number: 8318621Abstract: The invention relates to a glass sheet, the composition of which is of the soda-lime-silica type and comprises the following constituents in contents varying within the weight limits defined below: Fe2O3 (total iron) 0 to 0.02%; and WO3 0.1 to 2%.Type: GrantFiled: September 19, 2008Date of Patent: November 27, 2012Assignee: Saint-Gobain Glass FranceInventors: Dominique Sachot, Octavio Cintora-Gonzalez
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Publication number: 20120289394Abstract: To provide a colored glass plate, which uses sodium sulfate (Na2SO3) as a refining agent and which is capable of stably maintaining the mass percentage of divalent iron calculated as Fe2O3 in the total iron calculated as Fe2O3 at a high level, while suppressing development of an amber color that is derived from sodium sulfate. A colored glass plate made of alkali-containing silica glass containing elements of iron, tin and sulfur, wherein the percentage of the total sulfur calculated as SO3 is at least 0.025% as represented by mass percentage based on oxides, the percentage of divalent iron calculated as Fe2O3 in the total iron calculated as Fe2O3 is from 60 to 80% as represented by mass percentage, and the percentage of divalent tin calculated as SnO2 in the total tin calculated as SnO2 is at least 0.1% as represented by mol percentage.Type: ApplicationFiled: July 12, 2012Publication date: November 15, 2012Applicant: Asahi Glass Company, LimitedInventors: Kensuke NAGAI, Yuichi Suzuki, Terutaka Maehara
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Patent number: 8304358Abstract: A soda-lime-silica glass for solar collector cover plates and solar mirrors has less than 0.010 weight percent total iron as Fe2O3, a redox ratio of less than 0.350, less than 0.0025 weight percent CeO2, and spectral properties that include a visible transmission, and a total solar infrared transmittance, of greater than 90% at a thickness of 5.5 millimeters, and reduced solarization. In one non-limiting embodiment of invention, the glass is made by heating a pool of molten soda-lime-silica with a mixture of combustion air and fuel gas having an air firing ratio of greater than 11, or an oxygen firing ratio of greater than 2.31. In another non-limiting embodiment of the invention, streams of oxygen bubbles are moved through a pool of molten glass. In both embodiments, the oxygen oxidizes ferrous iron to ferric iron to reduce the redox ratio.Type: GrantFiled: November 21, 2008Date of Patent: November 6, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Larry J. Shelestak, Ronald L. Shewenninger
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Patent number: 8304484Abstract: Disclosed is a glass composition having a stable quality, which can be easily obtained. This glass composition can be used as a glass filler to be blended into a polycarbonate resin, and enables to reduce the load imposed on a glass manufacturing apparatus. Specifically, this glass composition contains, in mass %, 50?SiO2?60, 8?Al2O3?15, 0?MgO?10, 5?CaO<21, 0<SrO+BaO?25, 10<MgO+SrO+BaO?30, 0?Li2O+Na2O+K2O<2, 2<TiO2?10 and 0?ZrO2<2 and does not substantially contain B2O3, F, and ZnO.Type: GrantFiled: June 17, 2008Date of Patent: November 6, 2012Assignee: Nippon Sheet Glass Company, LimitedInventors: Kosuke Fujiwara, Akihiro Koyama
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Patent number: 8298972Abstract: This invention relates to a high transmission low iron glass that includes boron oxide. The boron oxide, added to this low iron glass, has the effect of improving glass refining, homogeneity and quality (lower seed count) through its flux action and improves glass optical parameters of green and clear glass through the change in refractive index and surface tension. Boron oxide lends to broader and weaker absorption band of such transition element(s) as iron which additionally improves the transmittance of low iron clear glass in certain example embodiments of this invention. In certain example embodiments, the addition of boron oxide in certain quantities in advantageous in that it improves the chemical durability of the glass by decreasing the USPX (or USPXIII) value of the glass via suppression of the silica, sodium ions in the glass structure.Type: GrantFiled: July 14, 2011Date of Patent: October 30, 2012Assignees: Guardian Industries Corp., Phoenicia America-Israel (Flat Glass) Ltd.Inventors: Kevin R. Fulton, Abraham W. Michaelis, Mario Resch, David Bird, Richard Hulme, Scott V. Thomsen
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Patent number: 8298973Abstract: A glass thread adapted for reinforcing polymeric materials includes a plurality of filaments having a chemical composition that includes the following constituents within the limits defined below in weight percent: SiO2 40 to 60 Al2O3 0 to 5 CaO 1 to 15 MgO 1 to 15 BaO 2 to 15 SrO 12 to 20 ZnO 0.5 to 10 Na2O + K2O + Li2O 0 to 5 TiO2 3 to 20 Prosthetic members including such threads are also described.Type: GrantFiled: August 28, 2008Date of Patent: October 30, 2012Assignee: Societe de Recherches Techniques Dentaires—R.T.D.Inventors: Anne Berthereau, Jerome Blaizot
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Publication number: 20120264585Abstract: To provide a method for producing chemically tempered glass, whereby the chemical tempering can be done at a low temperature and in a short time. A method for producing chemically tempered glass, which comprises chemically tempering glass for chemical tempering, comprising, as represented by mole percentage based on the following oxides, from 60 to 75% of SiO2, from 5 to 15% of Al2O3, from 1 to 12% of MgO, from 0 to 3% of CaO, from 0 to 3% of ZrO2, from 10 to 20% of Li2O, from 0 to 8% of Na2O and from 0 to 5% of K2O, and having a total content R2O of Li2O, Na2O and K2O of at most 25%, and a ratio Li2O/R2O of the Li2O content to R2O of from 0.5 to 1.0.Type: ApplicationFiled: March 13, 2012Publication date: October 18, 2012Applicant: Asahi Glass Company, LimitedInventors: Seiki OHARA, Kazutaka Ono, Tetsuya Nakashima
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Publication number: 20120252652Abstract: A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm3.Type: ApplicationFiled: June 13, 2012Publication date: October 4, 2012Inventors: Matthew John Dejneka, Sinue Gomez
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Publication number: 20120251827Abstract: A tempered glass substrate of the present invention is a tempered glass substrate, which has a compression stress layer on a surface thereof, and has a glass composition comprising, in terms of mass %, 40 to 71% of SiO2, 3 to 21% of Al2O3, 0 to 3.5% of Li2O, 7 to 20% of Na2O, and 0 to 15% of K2O.Type: ApplicationFiled: June 8, 2012Publication date: October 4, 2012Inventor: Takashi MURATA
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Publication number: 20120251743Abstract: A housing/enclosure/cover can include an ion-exchanged glass exhibiting the following attributes (1) radio, and microwave frequency transparency, as defined by a loss tangent of less than 0.03 and at a frequency range of between 15 MHz to 3.0 GHz; (2) infrared transparency; (3) a fracture toughness of greater than 0.6 MPa·m1/2; (4) a 4-point bend strength of greater than 350 MPa; (5) a Vickers hardness of at least 450 kgf/mm2 and a Vickers median/radial crack initiation threshold of at least 5 kgf; (6) a Young's Modulus ranging between about 50 to 100 GPa;; (7) a thermal conductivity of less than 2.0 W/m° C., and (9) and at least one of the following attributes: (i) a compressive surface layer having a depth of layer (DOL) greater and a compressive stress greater than 400 MPa, or, (ii) a central tension of more than 20 MPa.Type: ApplicationFiled: May 15, 2012Publication date: October 4, 2012Inventors: Jaymin Amin, Matthew John Dejneka, Linda Ruth Pinckney, Katherine Rose Rossington, Robert Sabia
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Patent number: 8273146Abstract: Provided is a silicon wafer which is stabilized in quality exerting no adverse influence on device characteristics and manufactured by restricting a boron contamination from the environment, and a manufacturing process therefor. Concretely, the silicon wafer is characterized by an attached boron amount thereon being 1×1010 atoms/cm2 or less. In order to manufacture such a wafer as contains a small amount of boron attached on the wafer surface, the wafer is treated in an atmosphere of boron concentration of 15 ng/m3 or less. Boron-less filters and boron adsorbing filters are used as filters in a clean room and the like so as to lower the boron concentration in the atmosphere.Type: GrantFiled: September 20, 2000Date of Patent: September 25, 2012Assignee: Shin-Etsu Handotai Co., Ltd.Inventors: Fumiaki Maruyama, Naoki Naito, Atsuo Uchiyama
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Publication number: 20120238435Abstract: To provide an inexpensive glass plate on the surface of which elution of Na+ is suppressed, and its production process. A glass plate comprising soda lime silica glass containing at least elements of Si, Al, Ca and Na, wherein when the Na amount at a depth of 2,000 nm from at least one surface of the glass plate is 100%, the Na amount at a depth of 20 nm from the above surface is at most 45%, the Na amount at a depth of 40 nm from the above surface is at most 70%, and the Na amount at a depth of 60 nm from the above surface is at most 80%.Type: ApplicationFiled: June 1, 2012Publication date: September 20, 2012Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Yusuke Arai, Tomoyuki Kobayashi, Yuki Kondo