And Aluminum Patents (Class 501/66)
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Patent number: 7704902Abstract: The invention relates to glass fibers having a chemical composition that contains the following constituents in the limits defined hereafter and expressed in percentage by weight, namely: 38 to 49 SiO2; 15 to 25 Al2O3; 1 to 15 CaO; 0 to 4 MgO; 14 to 25 Na2O; 0 to 10 K2O; 0 to 8 B2O3; 0 to 3 Fe2O3; and 0 to 3 P2O5.Type: GrantFiled: March 31, 2006Date of Patent: April 27, 2010Assignee: Saint-Gobain IsoverInventors: Bertrand Maquin, Jérôme Lalande, Yannick Lefrere
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Patent number: 7700506Abstract: The PbO-free UV-absorbing glass is made under oxidative conditions and has a composition, in % by weight, of: SiO2, 55-79; B2O3, 3-25; Al2O3, 0-10; Li2O, 0-10; Na2O, 0-10; K2O, 0-10; MgO, 0-2; CaO, 0-3; SrO, 0-3; BaO, 0-3; ZnO, 0-3; ZrO2, 0-3; CeO2, 0-1; Fe2O3, 0-1; WO3, 0-3; Bi2O3, 0-3; MoO3, 0-3; ?Li2O+Na2O+K2O=0.5 to 16 and ?MgO+CaO+SrO+BaO+ZnO=0-10. It also contains from 0.1 to 10% TiO2 with at least 95% of the titanium as Ti+4 so that it has a high visible transmission, reduced color centers, and a sharp UV absorption edge.Type: GrantFiled: April 8, 2008Date of Patent: April 20, 2010Assignee: Schott AGInventors: Joerg Fechner, Andreas Reisse, Franz Ott, Brigitte Hueber
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Patent number: 7696113Abstract: Alkali-free glasses are disclosed which can be used to produce substrates for flat panel display devices, e.g., active matrix liquid crystal displays (AMLCDs). The glasses contain iron and tin as fining agents, and preferably are substantially free of arsenic and antimony. In certain embodiments, the glasses are also substantially free of barium. Methods for producing alkali-free glass sheets using a downdraw process (e.g., a fission process) are also disclosed.Type: GrantFiled: December 1, 2008Date of Patent: April 13, 2010Assignee: Corning IncorporatedInventor: Adam James Gillmar Ellison
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Publication number: 20100084016Abstract: Aluminoborosilicate glasses which may be useful in photovoltaic, photochromic, electrochromic, or Organic Light Emitting Diode (OLED) lighting applications are described.Type: ApplicationFiled: October 5, 2009Publication date: April 8, 2010Inventors: Bruce Gardiner Aitken, Adam James Ellison, Timothy J. Kiczenski
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Publication number: 20100087307Abstract: 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: ApplicationFiled: June 3, 2008Publication date: April 8, 2010Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Takashi Murata, Hiroki Yamazaki
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Patent number: 7691762Abstract: The invention relates to a glass composition and a glass frit adequate for low temperature sintering agent at 1,100° C. or less, and a dielectric composition and a multilayer ceramic capacitor using the same. The glass composition comprises aLi2O-bK2O-cCaO-dBaO-eB2O3-fSiO2, in which a, b, c, d, e and f satisfy following relationships: a+b+c+d+e+f=100, 2?a?10, 2?b?10, 0?c?25, 0?d?25, 5?e?20, and 50?f?80.Type: GrantFiled: June 29, 2009Date of Patent: April 6, 2010Assignee: Samsung Electro-Mechanics Co.,Inventors: Sung Bum Sohn, Kang Heon Hur, Eun Sang Na, Tae Ho Song, Han Seong Jung, Chan Kong Kim
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Patent number: 7687419Abstract: A glass substrate used as a substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD, and a glass composition used to make such a glass substrate, contains the following glass ingredients: 40 to 70% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 10% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 3.0 to 15% by weight of R2O compounds, where R=Li, Na, and K; a total of 2.0 to 15% by weight of R?O compounds, where R=Mg, and Zn; and a total of 1.0 to 20% by weight of MOx (TiO2+ZrO2+LnxOy), where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5. Here, the following condition is fulfilled: 0.070<(total content of R?O compounds)/(SiO2+Al2O3+B2O3)<0.200.Type: GrantFiled: October 4, 2004Date of Patent: March 30, 2010Assignee: Konica Minolta Opto, Inc.Inventor: Hideki Kawai
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Patent number: 7687420Abstract: The invention relates to a tempered glass comprising, in terms of mass percent, SiO2: 60 to 80%; Al2O3: 3 to 18%; B2O3: 0 to 7%; Li2O: 0.01 to 10%; Na2O: 4 to 16%; K2O: 0 to 15%; and R?O (wherein R?O indicates a total content of alkaline earth metal oxides): 0 to 5%, wherein a value of (Li2O+Al2O3)/(Na2O+K2O) in terms of molar ratio is within a range of 0.1 to 2, and wherein a surface of the tempered glass is treated to form a compressive stress layer.Type: GrantFiled: May 25, 2007Date of Patent: March 30, 2010Assignee: Nippon Electric Glass Co., Ltd.Inventor: Takashi Murata
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Patent number: 7682999Abstract: Glass composition intended for the manufacture of windows that absorb ultraviolet and infrared radiation, comprising the oxides below, in contents varying within the following limits by weight: SiO2 65-80% Al2O3 0-5% B2O3 0-5% CaO ?5-15% MgO 0-2% Na2O ?9-18% K2O ?0-10% BaO 0-5% characterized in that it additionally comprises the absorbent agents below, in contents varying within the following limits by weight: Fe2O3 (total iron) 0.7 to 1.6% CeO2 0.1 to 1.2% TiO2 ??0 to 1.5% the glass having a redox factor of 0.23 or less and containing no tungsten oxide WO3.Type: GrantFiled: February 6, 2006Date of Patent: March 23, 2010Assignee: Saint-Gobain Glass FranceInventor: Laurent Teyssedre
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Publication number: 20100069221Abstract: The glass-metal bond for a tube collector includes a glass tube and metal part bonded to the glass tube. In order to match the thermal expansion properties, the glass tube has the following composition: SiO2, 73-77 wt. %; B2O3, 6-<8 wt. %; Al2O3, 6-6.5 wt. %; Na2O, 5.5-7 wt. %; K2O, 1-3 wt. %; CaO, 0.5-3.2 wt. %; MgO, 0-2 wt. %; Fe2O3, 50-150 ppm; and TiO2 0-<100 ppm. The ratio of the sum of the alkaline-earth metal oxides (in mol %) to the sum of the alkali metal oxides (in mol %) is ?0.6. The metal part is preferably made of metal material no. 1.3981 according to DIN 17745. The glass composition itself is also part of the invention.Type: ApplicationFiled: September 11, 2009Publication date: March 18, 2010Inventors: Erhard Dick, Johann Collignon, Wolfgang Zettl, Stephan Tratzky
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Patent number: 7674736Abstract: The invention relates to a glass for dental applications which can be used as a glazing material of dental restorations and resists high temperatures, and thus does not tend to flow.Type: GrantFiled: May 10, 2007Date of Patent: March 9, 2010Assignee: Ivoclar Vivadent, AGInventors: Diana Tauch, Harald Bürke, Volker M. Rheinberger
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Patent number: 7670975Abstract: To provide an alkali free glass which is suitable as a glass substrate for LCD and has few defects of bubbles and an undissolved starting material, and a process for producing an alkali free glass which can readily lower the defects in bubbles and an undissolved starting material. An alkali free glass with a matrix composition comprising SiO2, Al2O3, B2O3, MgO, CaO, SrO and BaO and containing substantially no alkali metal oxide, of which the temperature at which the viscosity becomes 102 dPa·s, is at most 1,600° C. and which contains sulfur in an amount of from 0.001 to 0.1% as calculated as SO3, as represented by the mass percentage, per 100% of the total amount of the above matrix composition, and a process for producing a glass which comprises preparing a starting material and melting it so that a sulfate be incorporated to the starting material in an amount of from 0.01 to 5% as calculated as SO3, as represented by the mass percentage, per 100% of the total amount of the above matrix composition.Type: GrantFiled: November 2, 2007Date of Patent: March 2, 2010Assignee: Asahi Glass Company, LimitedInventors: Kazuhiro Suzuki, Manabu Nishizawa, Seiji Miyazaki, Junichiro Kase, Kei Maeda
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Publication number: 20100047521Abstract: The invention relates to glass articles suitable for use as electronic device housing/enclosure or protective cover which comprise a glass material. Particularly, a housing/enclosure/cover comprising 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: August 21, 2009Publication date: February 25, 2010Inventors: Jaymin Amin, Matthew John Dejneka, Linda Ruth Pinckney, Katherine Rose Rossington, Robert Sabia
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Publication number: 20100047591Abstract: The invention relates to a dark gray soda-lime silicate glass composition which includes a coloring part essentially consisting of the compounds below in contents varying within the following weight limits: Fe2O3 (total iron) 0.7 to 0.95% CoO ?50 to 80 ppm NiO 400 to 700 ppm or Fe2O3 (total iron) 0.7 to 0.95% CoO 200 to 300 ppm NiO 1500 to 1900 ppm? said composition being free of selenium, having a redox of 0.40 or less, and the glass having a light transmission factor (TLA) under illuminant A of 50% or less and an overall energy transmission factor (TE) of less than 45%, these being measured for a thickness of 3.85 mm.Type: ApplicationFiled: October 29, 2009Publication date: February 25, 2010Applicant: SAINT-GOBAIN GLASS FRANCEInventors: Laurent TEYSSEDRE, Lionel HOMO
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Publication number: 20100045164Abstract: The invention concerns a glass composition for a glass body of an illuminating means with external electrodes, wherein the quotient of the loss angle (tan ?[10?4]) and the dielectric constant (??) amounts to tan ?[10?4]/??<5, i.e., tan ?/??<5×10?4). In this way, the total power loss of the illuminating means with external electrodes can be minimized in a targeted manner by means of the glass properties.Type: ApplicationFiled: December 29, 2005Publication date: February 25, 2010Inventors: Joerg Fechner, Martin Letz, Steffen Reichel, Franz Ott, Brigitte Hueber
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Patent number: 7666511Abstract: An alkali aluminosilicate glass that is chemically strengthened and has a down-drawable composition. The glass has a melting temperature less than about 1650° C. and a liquidus viscosity of at least 130 kpoise and, in one embodiment, greater than 250 kpoise. The glass undergoes ion exchange at relatively low temperatures to a depth of at least 30 ?m.Type: GrantFiled: July 31, 2007Date of Patent: February 23, 2010Assignee: Corning IncorporatedInventors: Adam James Ellison, Sinue Gomez
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Patent number: 7661277Abstract: As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.Type: GrantFiled: December 21, 2007Date of Patent: February 16, 2010Assignee: Shin-Etsu Quartz Products Co., Ltd.Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
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Publication number: 20100035745Abstract: Provided is a glass substrate satisfying ion exchange performance and devitrification resistance of a glass simultaneously and having higher mechanical strength compared to a conventional glass substrate. A tempered glass substrate which has a compression stress layer on a surface thereof, has a glass composition including, in terms of mole %, 50 to 85% of SiO2, 5 to 30% of Al2O3, 0 to 20% of Li2O, 0 to 20% of Na2O, 0 to 20% of K2O, 0.001 to 10% of TiO2, and 15 to 35% of Li2O+Na2O+K2O+Al2O3, has a (Li2O+Na2O+K2O)/Al2O3 value of 0.7 to 3 in terms of mole fraction, and is substantially free of As2O3 and F.Type: ApplicationFiled: October 10, 2007Publication date: February 11, 2010Inventor: Takashi Murata
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Publication number: 20100029460Abstract: The present invention provides a glass for anodic bonding having a low thermal expansion coefficient and capable of being subjected to laser beam micromachining. The present invention is a glass for anodic bonding having a base glass composition containing 1 to 6 mol % of Li2O+Na2O+K2O and having an average linear expansion coefficient of 32×10?7 K?1 to 39×10?7 K?1 in a temperature range of room temperature to 450° C. This glass further contains 0.01 to 5 mol % of a metal oxide as a colorant relative to the base glass composition, and has an absorption coefficient of 0.5 to 50 cm?1 at a particular wavelength within 535 nm or less.Type: ApplicationFiled: February 21, 2008Publication date: February 4, 2010Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Masanori Shojiya, Hirotaka Koyo, Koichi Sakaguchi, Satoshi Jibiki
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Patent number: 7648656Abstract: The invention is directed to a silver-containing polarizing boroaluminosilicate glass composition that has been doped with a noble metal selected from the group consisting of Pt, Pd, Os, Ir, Rh and Ru, including mixtures thereof, to nucleate and precipitate silver ions to silver metal without the need for a reducing atmosphere step. The invention is further directed to a method for making the glass composition of the invention. Using the composition and method of the invention, one can prepare a glass having a selected null transmission range.Type: GrantFiled: November 6, 2008Date of Patent: January 19, 2010Assignee: Corning IncorporatedInventors: Nicholas Francis Borrelli, George Bigelow Hares, David John McEnroe, Joseph Francis Schroeder, III
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Patent number: 7648930Abstract: The glass for a fluorescent light with a high hydrolytic resistance, which has composition, in % by weight based on oxide content of: SiO2, 63-75; B2O3, 15-18; Al2O3, 3.2-4.5; Na2O, 1-2; K2O, 2-6; ?Na2O+K2O, 3-8; MgO, 0-8; CaO, 0-10; SrO, 0-10; BaO, 0-10; ZnO, 0-5; ?MgO+CaO+SrO+BaO+ZnO, 0-10; ZrO2, 0-3; CeO2, 0-10; Fe2O3, 0-1; WO3, 0-3; Bi2O3, 0-5; MoO3, 0-3; TiO2, 0-10; ?Hf+Ta+W+Re+Os+Ir+Pt+La+Pr+Nd+Sm+Eu+Gd+Tb+Dy+Ho+Er+Tm+Yb+Lu in oxidic form, 0 to 5% by weight, as well as one or more conventional refining agents. The glass is characterized in that it contains no lithium and has a weight ratio of Na2O to K2O of less than one.Type: GrantFiled: May 19, 2006Date of Patent: January 19, 2010Assignee: Schott AGInventors: Joerg Fechner, Franz Ott
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Publication number: 20100009154Abstract: A strengthened glass that does not exhibit frangible behavior when subjected to impact or contact forces, and a method of strengthening a glass. The glass may be strengthened by subjecting it to multiple, successive, ion exchange treatments. The multiple ion exchange treatments provide a local compressive stress maximum at a depth of the strengthened layer and a second local maximum at or near (e.g., within 10 ?m) the surface of the glass.Type: ApplicationFiled: July 10, 2009Publication date: January 14, 2010Inventors: Douglas Clippinger Allan, Adam James Ellison, Sinue Gomez
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Publication number: 20090325349Abstract: A semiconductor encapsulation material of the present invention contains a glass for metal coating which has a strain point of 480° C. or higher, a temperature corresponding to a viscosity of 104 dPa·s of 1,100° C. or lower, and a thermal expansion coefficient at 30 to 380° C. of 70×10?7 to 110×10?7/° C. The semiconductor encapsulation material of the present invention contains no environmentally harmful substances, has a heat resistance temperature as high as 500° C. or above, and can be used for the encapsulation of metals susceptible to oxidation, e.g., Dumet.Type: ApplicationFiled: June 23, 2009Publication date: December 31, 2009Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventor: Koichi HASHIMOTO
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Publication number: 20090325776Abstract: A tempered glass of the present invention having a compression stress layer is characterized in that a ?-OH value is 0.01 to 0.5/mm. Here, the “?-OH value” is a value obtained from the following equation by measuring the transmittance of glass by FT-IR.Type: ApplicationFiled: July 30, 2009Publication date: December 31, 2009Inventor: Takashi Murata
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Publication number: 20090294773Abstract: Disclosed are alkali-free glasses having a liquidus viscosity of greater than or equal to about 90,000 poises, said glass comprising SiO2, Al2O3, B2O3, MgO, CaO, and SrO such that, in mole percent on an oxide basis: 64?SiO2?68.2; 11?Al2O3?13.5; 5?B2O3?9; 2?MgO?9; 3?CaO?9; and 1?SrO?5. The glasses can be used to make a display glass substrates, such as thin film transistor (TFT) display glass substrates for use in active matrix liquid crystal display devices (AMLCDs) and other flat panel display devices.Type: ApplicationFiled: May 22, 2009Publication date: December 3, 2009Inventor: Adam James Ellison
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Patent number: 7618908Abstract: The invention is directed to a method for preparing visible light optical polarizers using a non-halide silver salt and any glass composition that the non-halide silver salts is soluble, provided that the glass composition, including the silver salt, was a halide content that is, on a molar basis, 10% or less than the silver content, on a molar basis, of the glass composition. The silver containing glass is hydrogen reduced prior to stretching to form an optical polarizer. The invention enables one to form a visible light polarizer having a polarizing layer thickness in the range 10-40 ?m in which the silver particles have a surround index sufficiently removed from the blue polarizer region to allow good contrast.Type: GrantFiled: December 20, 2005Date of Patent: November 17, 2009Assignee: Corning IncorporatedInventors: Nicholas Francis Borrelli, David John McEnroe, Joseph Francis Schroeder, III
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Publication number: 20090275462Abstract: The glass substrate for a solar cell of the present invention is characterized by having a glass composition including, in terms of mass %, 50 to 80% of SiO2, 5 to 20% of Al2O3, 0 to 20% of B2O3, 0 to 20% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 20% of BaO, 0.001 to 2% of SnO2, 0 to 1% of As2O3, having a mass ratio SnO2/(Fe2O3+SnO2) of 0.9 or more, and having a difference between transmittances at a wavelength of 400 nm before and after irradiation with ultraviolet ray of 2% or less.Type: ApplicationFiled: July 9, 2009Publication date: November 5, 2009Inventor: Takashi Murata
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Patent number: 7611774Abstract: The glass ceramic or glass element that can be subjected to high thermal loads is decorated with a metallic colorant. The metallic colorant consists of a melted silicate and at least one effect pigment, which is included in a specified proportion in a melt of the silicate glass to form the metallic colorant. The at least one effect pigment is in the form of platelets of synthetic aluminum oxide (Al2O3) coated with at least one metal oxide. Preferably the at least one effect pigment is a XIRALLIC® high chroma sparkle pigment supplied commercially by Merck and the metallic colorant has a pigment content of from 1 to 30 wt. %.Type: GrantFiled: May 3, 2005Date of Patent: November 3, 2009Assignee: Schott AGInventors: Monica Cotlear De Witzmann, Dietmar Wennemann, Angelina Milanovska, Ella Ruhl, Eva Lauterbach, Ioannis Kosmas
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Patent number: 7605100Abstract: The present invention relates to lead and arsenic free optical hard crown glasses with a low transformation temperature (Tg?520° C.), characterized by their optical range with a refractive index of 1.57?nd?1.61 and an Abbe number of 56??d?63. The glasses have the following composition (in wt %): SiO2 37-46 B2O3 12-18 Al2O3 1-7 Li2O 5.5-<7? Na2O 1-5 K2O <4 MgO <5 CaO <7 BaO 21-29 SrO 0.1-1.5 ZnO ??1-4.5 TiO2 0.1-0.5 ZrO2 ??<0.7 with ? TiO2, ZrO2 < 0.9. Refiners can be added, provided that they do not comprise arsenic.Type: GrantFiled: February 3, 2006Date of Patent: October 20, 2009Assignee: Schott AGInventors: Silke Wolff, Stefanie Hansen, Ute Woelfel
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Patent number: 7605101Abstract: A laminate includes a first green sheet and a second green sheet. The first green sheet includes a first glass including Al and M which is at least one of Sr and Ba. A relationship between Al content and M content is so defined that a position represented by percent by mass of Al in terms of Al2O3 and percent by mass of M in terms of MO on a coordinate system are on or in a range defined by straight lines connecting point A (1, 21), point B (1, 35), point C (9, 45), point D (20, 45), point E (20, 35), and point F (9, 21) on the coordinate system. The second green sheet includes a second glass including Si and B. The first green sheet is integrally laminated with the second green sheet.Type: GrantFiled: March 27, 2007Date of Patent: October 20, 2009Assignee: KYOCERA CorporationInventors: Shinya Kawai, Tatsuji Furuse, Mieko Yashima, Kouji Yamamoto
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Patent number: 7598191Abstract: Glass for gas discharge tubes, which are used in fluorescent lamps, EEFL lamps, LCD displays, computer monitors, telephone displays and TFT displays, and a process for making it are described. The glass contains, in % by weight based on oxide content: SiO2, 60-75; B2O3, >25-35; Al2O3, 0-10; Li2O, 0-10; Na2O, 0-20; K2O, 0-20; MgO, 0-8; CaO, 0-20; SrO, 0-5; BaO, 0-5; ZnO, 0-3; ZrO2, 0-5; TiO2, 0-10; Fe2O3, 0-0.5; CeO2 0-0.5; MnO2, 0-1.0; Nd2O3, 0-1.0; WO3, 0-2; Bi2O3, 0-5; MoO3, 0-5; As2O3, 0-1; Sb2O3, 0-1; SO42?, 0-2; Cl-, 0-2 and F?, 0-2, wherein ?Li2O+Na2O+K2O=0-25% by weight; ?MgO+CaO+SrO+BaO=0-20; ?Fe2O3+CeO2+TiO2+PbO+As2O3+Sb2O3 is at least 0-10; and ?PdO+PtO3+PtO2+PtO+RhO2+Rh2O3+IrO2+Ir2O3 is from 0.00001-0.1.Type: GrantFiled: July 11, 2005Date of Patent: October 6, 2009Assignee: Schott AGInventors: Joerg Fechner, Franz Ott, Brigitte Hueber
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Patent number: 7596968Abstract: Glass, glass compositions, methods of preparing the glass compositions, microfluidic devices that include the glass composition, and methods of fabricating microfluidic devices that include the glass composition are disclosed. The borosilicate glass composition includes silicon dioxide (SiO2) in a range from about 60% to 74% by total composition weight; boric oxide (B2O3) in a range from about 9% to 25% by total composition weight; aluminum oxide (Al2O3) in a range from about 7% to 17% by total composition weight; and at least one alkali oxide in a range from about 2% to 7% by total composition weight. In addition, the borosilicate glass has a coefficient of thermal expansion (CTE) that is in a range between about 30×10?7/° C. and 55×10?7/° C. Furthermore, the borosilicate glass composition resists devitrification upon sintering without the addition of an inhibitor oxide.Type: GrantFiled: January 18, 2008Date of Patent: October 6, 2009Assignee: Corning IncorporatedInventor: Paulo Marques
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Publication number: 20090237787Abstract: To Provide a polarizing glass with better weatherability than conventional polarizing glasses, affording high long-term reliability without the above-described surface deterioration. To provide an optical isolator employing polarizing glass of improved weatherability, affording good weatherability and high reliability for extended periods. [Means for Solving] A polarizing glass comprising geometrically anisotropic particles dispersed in an oriented manner in at least one surface layer of a glass base body. The glass base body does not comprise an oxide of alkali earth metal and PbO, and consists of borosilicate glass comprising at least one additive component selected from the group consisting of Y2O3, ZrO2, La2O3, CeO2, Ce2O3, TiO2, V2O5, Ta2O5, WO3, and Nb2O5, and the geometrically anisotropic metal particles are metallic cupper particles. An optical isolator employing the polarizing glass.Type: ApplicationFiled: April 12, 2007Publication date: September 24, 2009Applicant: Hoya Candeo Optronics CorporationInventors: Yoshitaka Yoneda, Sei-ichi Yokoyama
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Publication number: 20090227438Abstract: The present invention relates to a color adapting composition used for coloring and color adapting porcelain for ceramic crown such as dental restorations and prosthetics, and aluminosilicate glass appropriate for using in a color adapting composition. More specifically, a color adapting composition for dental porcelains are prepared by blending two or more kinds of glass frits having different sintering temperatures from each other and an inorganic pigment or a colored glass obtained by previously dispersing inorganic pigments in glass.Type: ApplicationFiled: March 4, 2009Publication date: September 10, 2009Inventors: Yukio Fukatani, Keiji Takahashi, Ryuichi Yoshimoto
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Publication number: 20090226671Abstract: A technical object of the present invention is to satisfy various properties required in glass for liquid crystal displays and the like, in particular, fusibility, devitrification resistance, and like properties, and then to design a glass composition in which components harmful to the environment are reduced or substantially not contained, thereby obtaining a glass substrate that takes the environment into consideration. An alkali-free glass of the present invention contains the following glass composition in percent by weight based on oxide: 50 to 70% of SiO2, 10 to 20% of Al2O3, 8 to 12% of B2O3, 0 to 3% of MgO, 4 to 15% of CaO, 0 to 10% of SrO, 0 to 1% of BaO, and 0 to 5% of ZnO, and substantially free of alkali metal oxide and As2O3.Type: ApplicationFiled: May 22, 2007Publication date: September 10, 2009Inventors: Tomoki Yanase, Shinkichi Miwa
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Publication number: 20090220761Abstract: A glass that is ion exchangeable to a depth of at least 20 ?m (microns) and has a internal region having a tension of less than or equal to 100 MPa. The glass is quenched or fast cooled from a first temperature above the anneal point of the glass to a second temperature that is below the strain point of the glass. In one embodiment, the glass is a silicate glass, such as an alkali silicate glass, an alkali aluminosilicate glass, an aluminosilicate glass, a borosilicate glass, an alkali aluminogermanate glass, an alkali germanate glass, an alkali gallogermanate glass, and combinations thereof.Type: ApplicationFiled: February 26, 2009Publication date: September 3, 2009Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez
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Patent number: 7582581Abstract: A subject for the invention is to provide an alkali-free glass which is capable of reducing or totally eliminating As2O3 and which has fewer bubble inclusion than that in the prior technology. The invention relates to an alkali-free glass which comprises SiO2 in an amount of from 40 to 70% by weight; Al2O3 in an amount of from 6 to 25% by weight; B2O3 in an amount of from 5 to 20% by weight; MgO in an amount of from 0 to 10% by weight; CaO in an amount of from 0 to 15% by weight; BaO in an amount of from 0 to 30% by weight; SrO in an amount of from 0 to 10% by weight; ZnO in an amount of from 0 to 10% by weight, each based on the total amount of said glass, and helium and/or neon in an amount of from 0.0001 to 2 ?l/g (0° C., 1 atm.).Type: GrantFiled: August 3, 2004Date of Patent: September 1, 2009Assignee: Nippon Electric Glass Co., Ltd.Inventors: Masataka Kawaguchi, Masataka Takagi
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Patent number: 7576021Abstract: A mother glass composition for graded index lenses, comprising the following glass components in mol %: 40?SiO2?65, 1?TiO2?10, 0?MgO?22, 2?Li2O?18, 2?Na2O ?20, 6?Li2O+Na2O?38, and from 0.1 to 15 mol % of any two or more of CaO, SrO and BaO, a graded index lens using the mother glass composition, a manufacturing method of the graded index lens, and an optical product and an optical instrument using the graded index lens, are provided.Type: GrantFiled: April 5, 2005Date of Patent: August 18, 2009Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Taro Miyauchi, Kazuya Ohkawa, Tatsufumi Shiba, Tomizou Matsuyama
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Publication number: 20090202808Abstract: 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 indenterType: ApplicationFiled: February 6, 2009Publication date: August 13, 2009Inventors: Gregory Scott Glaesemann, James Joseph Price, Robert Sabia, Nagaraja Shashidhar
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Patent number: 7572746Abstract: An optical glass having optical constants of refractive index (nd) within a range from 1.49 to 1.54 and Abbe number (? d) within a range from 55 to 65 comprises, in mass %, SiO2 >65-75% R2O (R is at least one selected from the group ?15-25% consisting of Li, Na, K and Cs) where Li2O ?0.1-5.0% Na2O ?1.0-10.0% K2O ?5.0-20.0% and Cs2O ?0-5.0% R?O (R? is at least one selected from the group ?0.5-10% consisting of Mg, Ca, Sr or Ba) where MgO ?0-10% and/or CaO ?0-10% and/or SrO ?0-10% and/or BaO ?0-10% ZnO ?0-<3.0% and/or B2O3 ?0-6.0% and/or Al2O3 ?0-<1.0% and/or TiO2 ?0-<2.0% and/or ZrO2 ?0-2% and/or WO3 ?0-3.0% and/or Sb2O3 ?0-2.0% and a fluoride or fluorides of a metal element or ?0-2%.Type: GrantFiled: August 24, 2004Date of Patent: August 11, 2009Assignee: Kabushiki Kaisha OharaInventors: Junko Ishioka, Masahiro Onozawa
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Publication number: 20090176640Abstract: To provide an alkali-free glass substrate, which has a high Young's modulus, a low linear expansion coefficient, a high strain point and a low density, does not devitrify in the float forming process and is excellent in acid resistance. An alkali-free glass substrate, which contains neither alkali component nor BaO and consists essentially of, as represented by mol % based on oxide, from 57.0 to 65.0% of SiO2, from 10.0 to 12.0% of Al2O3, from 6.0 to 9.0% of B2O3, from 5.0 to 10.0% of MgO, from 5.0 to 10.0% of CaO and from 2.5 to 5.5% of SrO, provided that MgO+CaO+SrO is from 16.0 to 19.0%, MgO/(MgO+CaO+SrO)?0.40, and B2O3/(SiO2+Al2O3+B2O3)?0.12; wherein Young's modulus ?75 GPa; the linear expansion coefficient at from 50 to 350° C. is from 30×10?7/° C. to 40×10?7/° C.; the strain point ?640° C.; the temperature T2 (the viscosity ? satisfies log ?=2)?1,620° C.; the temperature T4 (the viscosity ? satisfies log ?=4)?1,245° C.; the devitrification temperature ?T4; and weight loss per unit area is at most 0.Type: ApplicationFiled: January 7, 2009Publication date: July 9, 2009Applicant: Asahi Glass Company, LimitedInventors: Terutaka Maehara, Manabu Nishizawa, Junichiro Kase, Syuji Matsumoto
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Publication number: 20090170684Abstract: The invention provides an alkali-free glass substrate small in the variation of the thermal shrinkage and a process for producing the same. An alkali-free glass substrate of the invention has an absolute value of a thermal shrinkage of 50 ppm or more when the alkali-free glass substrate is heated at a rate of 10° C./min from a room temperature, kept at a holding temperature of 450° C. for 10 hr and then cooled at a rate of 10° C./min.Type: ApplicationFiled: December 15, 2006Publication date: July 2, 2009Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Yoshinari Kato, Tatsuya Takaya
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Patent number: 7550645Abstract: The present invention provides processes to immobilize radioactive and/or hazardous waste in a borosilicate glass, the waste containing one or more of radionuclides, hazardous elements, hazardous compounds, and/or other compounds. The invention also provides borosilicate glass compositions for use in immobilizing radioactive and/or hazardous waste.Type: GrantFiled: January 18, 2006Date of Patent: June 23, 2009Assignee: Geomatrix Solutions, Inc.Inventors: Anatoly Chekhmir, Arthur Gribetz
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GLASS COMPOSITION FOR LAMP, LAMP, BACKLIGHT UNIT AND METHOD FOR PRODUCING GLASS COMPOSITION FOR LAMP
Publication number: 20090141478Abstract: Disclosed is a glass composition for lamps which contains Mo ions as a component, substantially comprising the following that are expressed in terms of oxides: SiO2: 55 to 75 wt %, B2O3: 11 to 25 wt %, MoO3: 0.3 to 1.4 wt %, Al2O3: 1 to 10 wt %, Li2O: 0 to 10 wt %, Na2O: 0 to 10 wt %, K2O: 0 to 10 wt %, Li2O+Na2O+K2O: 1 to 10 wt %, MgO: 0 to 5 wt %, CaO: 0 to 10 wt %, SrO: 0 to 10 wt %, BaO: 0 to 10 wt %, MgO+CaO+SrO+BaO: 1 to 10 wt %. By having such a constitution, the glass composition has a high ultra violet shielding effect and hardly suffers from coloring.Type: ApplicationFiled: March 28, 2006Publication date: June 4, 2009Inventors: Yasurou Niguma, Atsushi Motoya -
Patent number: 7541302Abstract: Optical glass which is suitable for press molding does not substantially contain a compound of lead or arsenic, and has intermediate refractive index, low dispersion properties, low Tg and small density. Concretely, the optical glass includes the glass components of SiO2: 20 to 45%, B2O3: 15 to 40%, Al2O3: 4 to 15%, MgO: 0 to 10% (including 0), CaO: 13 to 25%, MgO+CaO: 13 to 25%, Li2O: 12.5 to 25%, Na2O: 0 to 10% (including 0), K2O: 0 to 10% (including 0), Li2O+Na2O+K2O: 12.5 to 25%, SrO: 0 to 10% (including 0), BaO: 0 to 5% (including 0), and Sb2O3: 0 to 1% (including 0).Type: GrantFiled: April 13, 2005Date of Patent: June 2, 2009Assignee: Konica Minolta Opto, Inc.Inventor: Manabu Izuki
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Publication number: 20090129061Abstract: The invention relates to aluminoborosilicate glasses as a glass casing body of a lighting means, especially for background illumination, which glass composition is equally suitable for use in lighting means with external contacting as well as for lighting means with internal contacting.Type: ApplicationFiled: November 20, 2008Publication date: May 21, 2009Inventors: Jorg Fechner, Franz Ott, Christof Kass
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Patent number: 7534734Abstract: Alkali-free glasses are disclosed which can be used to produce substrates for flat panel display devices, e.g., active matrix liquid crystal displays (AMLCDs). The glasses contain iron and tin as fining agents, and preferably are substantially free of arsenic and antimony. In certain embodiments, the glasses are also substantially free of barium. Methods for producing alkali-free glass sheets using a downdraw process (e.g., a fusion process) are also disclosed.Type: GrantFiled: November 13, 2006Date of Patent: May 19, 2009Assignee: Corning IncorporatedInventor: Adam James Gillmar Ellison
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GLASS FOR INFORMATION RECORDING MEDIA SUBSTRATE, GLASS SUBSTRATE FOR MAGNETIC DISK AND MAGNETIC DISK
Publication number: 20090110963Abstract: To provide a glass for an information recording media substrate, which is excellent in weather resistance. A glass for an information recording media substrate, which comprises, as represented by mol % based on oxide, from 61 to 66% of SiO2, from 11.5 to 17% of Al2O3, from 8 to 16% of Li2O, from 2 to 8% of Na2O, from 2.5 to 8% of K2O, from 0 to 6% of MgO, from 0 to 4% of TiO2 and from 0 to 3% of ZrO2, provided that Al2O3+MgO+TiO2 is at least 12%, and Li2O+Na2O+K2O is from 16 to 23%, wherein in a case of where B2O3 is contained, its content is less than 1%. The above glass for an information recording media substrate, wherein when the glass is left under steam atmosphere at 120° C. at 0.2 MPa for 20 hours, and the amount of Li, the amount of Na and the amount of K, which precipitate on a surface of the glass are represented as CLi, CNa and CK respectively, CNa is at most 0.7 nmol/cm2, and CLi+CNa+CK is at most 3.5 nmol/cm2.Type: ApplicationFiled: October 22, 2008Publication date: April 30, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Tetsuya NAKASHIMA, Kei Maeda, Noriaki Shimodaira, Atsuyoshi Takenaka -
Patent number: 7524784Abstract: Glasses are disclosed which are used to produce substrates in flat panel display devices. The glasses exhibit a density less than about 2.45 gm/cm3 and a liquidus viscosity greater than about 200,000 poises, the glass consisting essentially of the following composition, expressed in terms of mol percent on an oxide basis: 65-75 SiO2, 7-13 Al2O3, 5-15 B2O3, 0-3 MgO, 5-15 CaO, 0-5 SrO, and essentially free of BaO. The glasses also exhibit a strain point exceeding 650° C.Type: GrantFiled: March 10, 2008Date of Patent: April 28, 2009Assignee: Corning IncorporatedInventors: Lisa C. Chacon, Adam J. G. Ellison, George B. Hares, Jeffrey T. Kohli, Josef C. Lapp, Robert Morena
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Patent number: RE41127Abstract: An aluminosilicate glass having a composition consisting essentially of, as calculated in weight percent on an oxide basis, of 58-70% SiO2, 12-22% Al2O3, 3-15% B2O3, 2-12% CaO, 0-3% SrO, 0-3% BaO, 0-8% MgO, 10-25% MCSB (i.e., MgO+CaO+SrO+BaO), and SrO and BaO in combination being less than 3%.Type: GrantFiled: January 30, 2006Date of Patent: February 16, 2010Assignee: Corning IncorporatedInventor: Jeffrey T. Kohli