And Zinc Or Zirconium Patents (Class 501/67)
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Patent number: 7144834Abstract: The invention concerns an optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30–75; K2O 5–35; B2O3>4–17; ZnO 5–37; F 0.01–10; CdO 0.1–1, S+Se+Te 0.1–1.5 as well as the use of this glass as a long-pass cutoff filter.Type: GrantFiled: August 20, 2002Date of Patent: December 5, 2006Assignee: Schott AGInventors: Rolf Clasen, Monika Gierke, Jochen Freund, Magdalena Winkler-Trudewig, Uwe Kolberg
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Patent number: 7102242Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.Type: GrantFiled: January 18, 2005Date of Patent: September 5, 2006Assignee: Schott AGInventors: Peter Brix, Helmar Vetter, Oliver Fritz
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Patent number: 7087543Abstract: An optical glass having a refractive index (nd) of 1.57 to 1.67, an Abbe's number (?d) of 55 to 65 and a glass transition temperature (Tg) of 560° C. or lower and having a low-temperature softening property and excellent climate resistance or a haze value of 3% or less, or an optical glass comprising, by mol %, 22 to 40% of B2O3, 12 to 40% of SiO2, 2 to 20% of Li2O, 5 to 15% of CaO, 2 to 14% of ZnO, 0.5 to 4% of La2O3, 0 to 3% of Gd2O3, 0 to 3% of Y2O3, the total content of La2O3, Gd2O3 and Y2O3 being at least 1%, 0 to 5% of Al2O3, 0 to 3% of ZrO2 and 0 to 5% of BaO, the total content of the above components being more than 96%, and having a refractive index (nd) of 1.57 to 1.67 and an Abbe's number (?d) of 55 to 65.Type: GrantFiled: June 30, 2003Date of Patent: August 8, 2006Assignee: Hoya CorporationInventors: Yoshiko Kasuga, Xuelu Zou
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Patent number: 7087541Abstract: A glass composition suitable for manufacturing plasma displays and large-area displays using the fusion draw process is provided. The glass composition includes 59–66 mol % SiO2, 14.5–18.0 mol % Al2O3, 8.5–12.0 mol % Na2O, 2.5–6.5 mol % K2O, 2.5–9.0 mol % CaO, 0.0–3.0 mol % MgO, 0.0–3.0 mol % SrO, 0.0–3.0 mol % BaO, and 0.0–5.0 mol % MgO+SrO+BaO.Type: GrantFiled: June 14, 2004Date of Patent: August 8, 2006Assignee: Corning IncorporatedInventor: Jeffrey T. Kohli
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Patent number: 7045475Abstract: Glass formulations, and a method of converting such glass formulations to glass beads having a refractive index of at least 1.59 and a high level of retroreflectivity, are provided. The methods and formulations provide beads also having high levels of resistance to degradation by environmental exposure.Type: GrantFiled: April 28, 2004Date of Patent: May 16, 2006Assignee: PQ CorporationInventors: Ufuk Senturk, Michael P. Lanci, Raymond Jackson, John W. Lau
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Patent number: 7037868Abstract: The present invention provides zinc-free glass frits that can be used to formulate glaze compositions that develop glossy surfaces when fired on ceramic products such as floor tile and wall tile. The zinc-free glass frits include, by weight, from about 50% to about 70% SiO2, from about 5% to about 20% CaO, from about 3% to about 15% Al2O3, up to about 20% BaO, up to about 15% B2O3, up to about 10% K2O, up to about 10% Na2O, up to about 10% ZrO2, up to about 5% MgO and up to about 5% PbO and less than 0.5% ZnO. Glaze compositions comprising the zinc-free glass frits can be fired using conventional double fast firing, single fast firing, and gres porcellanato ceramic firing cycles.Type: GrantFiled: December 10, 2003Date of Patent: May 2, 2006Assignee: Ferro CorporationInventors: Jose Antonio Pascual Herrero, Juan Uso Villanueva, Antonio Manuel Querol Villalba
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Patent number: 6992030Abstract: Disclosed is a glass material essentially free of BaO and alkali oxide particularly suitable for the glass substrate of LCDs. The glass material consists essentially, expressed in mole percent on an oxide basis, of 70–80%, preferably 72–77% of SiO2, 3–9%, preferably 4–7% of Al2O3, 8–18%, preferably 10–16% B2O3, 3–10%, preferably 3–8% of CaO, 0–4%, preferably 0–3% RO, 0–0.2%, preferably 0–0.1% SnO, 0–1%, preferably 0 to 0.5% of XO, where RO represents, collectively, MgO, SrO and ZnO, XO represents, collectively, TiO2, ZrO2, Y2O3 and La2O3. The glass has a strain point in the range of over about 600° C., a coefficient of thermal expansion (CTE) in the range of about 23–35×10?7/° C., a density lower than about 2.35 g/cm3, a liquidus temperature lower than or equal to about 1200° C. and a durability in BHF less than or equal to 0.5 mg/cm2 weight loss.Type: GrantFiled: August 29, 2002Date of Patent: January 31, 2006Assignee: Corning IncorporatedInventor: Thomas E. Paulson
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Patent number: 6992031Abstract: The invention relates to a method for producing aluminosilicate glass that is devoid of alkali and that has a B2O3 content of between 0 and <5 wt.-% and a BaO content in excess of 5.5 wt.-%. Said method is characterised by the addition of between 0.05 wt.-% and 1.0 wt.-% SnO2 during the preparation of the mixture.Type: GrantFiled: July 12, 2001Date of Patent: January 31, 2006Assignee: Schott GlasInventors: Karin Naumann, Franz Ott, Ralf Diezel, Otmar Becker
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Patent number: 6989633Abstract: An alkaline-earth aluminosilicate glass having a composition (in % by weight, based on oxide) of SiO2>55-64; Al2O3 13-18; B2O3 0-5.5; M5O 0-7; CaO 5.5-14; SrO 0-8; BaO 6-17; ZrO2 0-2; CeO2 0-0.3; TiO2 0-0.5; CoO 0.01-0.035; Fe2O3 0.005-0.05; and NiO 0-0.Type: GrantFiled: February 3, 2003Date of Patent: January 24, 2006Assignee: Schott AGInventors: Christian Kunert, Karin Naumann, Franz Ott, Ottmar Becker
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Patent number: 6949485Abstract: A glass for substrate, which consists, as represented by mass percentage, essentially of: SiO2 40 to 59%, Al2O3 ?5 to 20%, B2O3 ?0 to 8%, MgO ?0 to 10%, CaO ?0 to 12%, SrO ?2 to 20%, BaO ?0 to 2%, ZnO ?0 to 4%, Li2O ?0 to 2%, Na2O ?0 to 10%, K2O ?0 to 12%, TiO2 ?0 to 10%, and ZrO2 ?0 to 5%, wherein MgO+CaO+SrO+BaO is at least 15%.Type: GrantFiled: June 1, 2001Date of Patent: September 27, 2005Assignee: Asabi Glass Company, LimitedInventors: Tetsuya Nakashima, Yasumasa Nakao
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Glass material for a substrate, glass substrate, and information recording medium employing the same
Patent number: 6942934Abstract: A glass material for a substrate, or a glass substrate, consists essentially of the following glass ingredients: from 45 to 70 wt % of SiO2, from 1 to 10 wt % of Al2O3, from 0.5 to 8 wt % of B2O3, from 7 to 20 wt % of Li2O+Na2O+K2O, from 0.1 to 10 wt % of MgO, from 0.1 to 10 wt % of CaO, from 1 to 15 wt % of MgO+CaO, from 0.5 to 10 wt % of TiO2, from 0.5 to 10 wt % of ZrO2, from 0 to 5 wt % of ZnO, and from 0 to 8 wt % of La2O3. The glass material, or the glass substrate, has uniform composition between at the surface and in the interior and has an amorphous structure. With this design, it is possible to obtain high mechanical strength without strengthening treatment, a linear thermal expansion coefficient close to motor components, and excellent chemical durability.Type: GrantFiled: May 25, 2004Date of Patent: September 13, 2005Assignee: Minolta Co., Ltd.Inventor: Hideki Kawai -
Patent number: 6939819Abstract: A glass ceramic composition which consists essentially of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and a glass powder having a glass transition point of from 450 to 800° C., wherein the average of the major axes L of particles of the above inorganic material powder is from 0.5 to 15 ?m, and the average of the ratios L/W of the major axes L to the minor axes W is at most 1.4. Further, a glass ceramic composition which consists essentially of, as represented by mass percentage, from 10 to 58% of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and from 42 to 90% of a glass powder having a glass transition point of from 450 to 800° C., wherein the glass powder consists essentially of, as represented by mol %, SiO2: 35 to 70%, B2O3: 0 to 30%, Al2O3: 3 to 18%, MgO: 0 to 40%, CaO: 0 to 19%, BaO: 0 to 35% and ZnO: 0 to 9%.Type: GrantFiled: June 18, 2003Date of Patent: September 6, 2005Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Usui, Hitoshi Onoda, Kazunari Watanabe, Yumi Okuyama, Yasuko Osaki, Katsuyoshi Nakayama
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Patent number: 6933253Abstract: An alkali-free glass applicable to a light transparent glass substrate in a liquid crystal display essentially consists, by weight, of basic elements of 40-70% SiO2, 6-25% Al2O3, 5-20% B2O3, 0-10% MgO, 0-15% CaO, 0-30% BaO, 0-10% SrO, and 0-10% ZnO, and a fining agent of a combination of 0.05-3% Sb2O3 and at least one of 0.05-2% SnO2 and 0.005-1% Cl2, which fining agent makes the resultant glass free from bubbles without the use of toxic As2O3 which has been known as the fining agent in the art.Type: GrantFiled: November 18, 2002Date of Patent: August 23, 2005Assignee: Nippon Electric Glass Co., Ltd.Inventors: Jun Naka, Toshiharu Narita, Shinkichi Miwa, Shigeru Yamamoto
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Glass material for a substrate, glass substrate, and information recording medium employing the same
Patent number: 6908870Abstract: A glass material for a substrate, or a glass substrate, consists essentially of the following glass ingredients: from 45 to 70 wt % of SiO2, from 1 to 10 wt % of Al2O3, from 0.5 to 8 wt % of B2O3, from 7 to 20 wt % of Li2O+Na2O+K2O, from 0.1 to 10 wt % of MgO, from 0.1 to 10 wt % of CaO, from 1 to 15 wt % of MgO+CaO, from 0.5 to 10 wt % of TiO2, from 0.5 to 10 wt % of ZrO2, from 0 to 5 wt % of ZnO, and from 0 to 8 wt % of La2O3. The glass material, or the glass substrate, has uniform composition between at the surface and in the interior and has an amorphous structure. With this design, it is possible to obtain high mechanical strength without strengthening treatment, a linear thermal expansion coefficient close to motor components, and excellent chemical durability.Type: GrantFiled: August 26, 2002Date of Patent: June 21, 2005Assignee: Minolta Co., Ltd.Inventor: Hideki Kawai -
Patent number: 6905989Abstract: Tunable dielectric materials including an electronically tunable dielectric ceramic and a low loss glass additive are disclosed. The tunable dielectric may comprise a ferroelectric perskovite material such as barium strontium titanate. The glass additive may comprise boron, barium, calcium, lithium, manganese, silicon, zinc and/or aluminum-containing glasses having dielectric losses of less than 0.003 at 2 GHz. The materials may further include other additives such as non-tunable metal oxides and silicates. The low loss glass additive enables the materials to be sintered at relatively low temperatures while providing improved properties such as low microwave losses and high breakdown strengths.Type: GrantFiled: May 31, 2002Date of Patent: June 14, 2005Assignee: Paratek Microwave, Inc.Inventors: Marion E. Ellis, Steven Wesley Winn, Luna H. Chiu
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Patent number: 6881690Abstract: New decorating materials suitable for the decoration of ceramic materials comprise a lead-free glass flux and at least one pigment. The glass flux comprises two lead-free glass compositions. One of the two glass compositions comprises, in weight percent, SiO2: 45 to 60%, Al2O3: 5 to 20%, B2O3: 15 to 30%, and one or more alkali metal oxides: 5 to 10%, provided that Li2O is contained in an amount of 2% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition. The other of the two glass compositions comprises, in weight percent, SiO2: 60 to 75%, Al203: 5 to 20%, at least one of MgO, CaO, ZnO: 5 to 20% in total, and one or more alkali metal oxides: 0.5 to 5%, provided that Li2O is contained in an amount of 0.5% or more, with the proviso that the total amount of said oxides is 90% or more of the total weight of the composition.Type: GrantFiled: February 19, 2003Date of Patent: April 19, 2005Assignee: Noritake Co., Ltd.Inventors: Takuya Kawamura, Hiromichi Hayashi, Nobuhiro Inoko
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Patent number: 6881692Abstract: An alkali-free glass consists essentially of, in mass percent, 58-70% SiO2, 10-19% Al2O3, 6.5-15% B2O3, 0-2% MgO, 3-12% CaO, 0.1-5% BaO, 0-4% SrO, 0.1-6% BaO+SrO, 0-5% ZnO, 5-15% MgO+CaO+BaO+SrO+ZnO, 0-5% ZrO2, 0-5% TiO2, and 0-5% P2O5. The alkali-free glass contains substantially no alkali metal oxide and has a density of 2.45g/cm3 or less, an average coefficient of thermal expansion of 25×10?7/° C.-36×10?7/° C. within a temperature range between 30 and 380° C., and a strain point not lower than 640° C.Type: GrantFiled: January 30, 2002Date of Patent: April 19, 2005Assignee: Nippon Electric Glass Co., LTDInventors: Takashi Murata, Shinkichi Miwa
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Patent number: 6867158Abstract: Flat panel liquid-crystal displays, such as for laptop computers. The displays include twisted nematic displays, supertwisted nematic displays, active matrix liquid-crystal displays, thin film transistor displays, and plasma addressed liquid-crystal displays. The displays are furnished with glass substrates. The glass substrates exhibit high resistance to thermal shock, a high transparency over a broad spectral range in the visible and ultra violet ranges and the glass being configured to be free of bubbles, knots, inclusions, streaks, and surface undulations, which glass substrates are made from alkali-free aluminoborosilicate glasses. There are also provided analogous thin-film photovoltaics.Type: GrantFiled: January 11, 2001Date of Patent: March 15, 2005Assignee: Schott GlasInventors: Ulrich Peuchert, Peter Brix
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Patent number: 6864197Abstract: The lead-free glass tubing of the SiO2—B2O3—R2O—BaO—ZnO—TiO2 system has a composition, in percent by weight on an oxide basis, consisting essentially of: SiO2, 34 to 52; B2O3, 10 to 25; Al2O3, 0 to 25; Li2O, 2 to 6; Na2O, 4 to 10; K2O, 2 to 6; CaO, 0 to 4; BaO, 1 to 5; ZnO, 4 to 12; TiO2, 2 to 6, and at least one refining agent in an effective amount for refining. An encapsulated diode consisting of a diode encapsulated with this lead-free glass tubing is also disclosed.Type: GrantFiled: October 10, 2002Date of Patent: March 8, 2005Assignee: Schott GlasInventors: Peter Brix, Helmar Vetter, Oliver Fritz
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Patent number: 6858552Abstract: The invention relates to an alkali-free aluminoborosilicate glass having a coefficient of thermal expansion ?20/300 of between 2.8 and 3.9·10?6/K, which has the following composition (in % by weight, based on oxide): SiO2>58-65, B2O3>6-11.5; Al2O3>14-20, MgO>3-6, CaO>4.5-10, SrO 0-<1.5, BaO>1.5-6, or SrO 0-<4, BaO >2.5-6, respectively, with SrO+BaO>3, ZnO 0-<2, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.Type: GrantFiled: December 21, 2001Date of Patent: February 22, 2005Assignee: Schott GlasInventor: Ulrich Peuchert
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Patent number: 6852658Abstract: Flat panel liquid-crystal displays, such as for laptop computers. The displays include twisted nematic displays, supertwisted nematic displays, active matrix liquid-crystal displays, thin film transistor displays, and plasma addressed liquid-crystal displays. The displays are furnished with glass substrates. The glass substrates exhibit high resistance to thermal shock, a high transparency over a broad spectral range in the visible and ultra violet ranges and the glass being configured to be free of bubbles, knots, inclusions, streaks, and surface undulations, which glass substrates are made from alkali-free aluminoborosilicate glasses. There are also provided analogous thin-film photovoltaics.Type: GrantFiled: January 11, 2001Date of Patent: February 8, 2005Assignee: Schott GlasInventors: Ulrich Peuchert, Peter Brix
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Patent number: 6852657Abstract: The invention concerns an optical colored glass of the composition (in % in weight on oxide basis) SiO2 50-62; K2O 10-25; Na2O 0-14; Al2O3 0-2; B2O3 3-5; ZnO 13.5-37; F 0-1; TiO2 0-7; In2O3 0-2; Ga2O3 0-2; SO3 0-1; SeO2 0-1; C 0-1; MIMIIIY2II 0.1-3, whereby MI=Cu+ and/or Ag+ and/or MIII=In3+ and/or Ga3+ and/or Al3+ and/or YII=S2? and/or Se2? and at least 0.1% in weight of the oxide (M2O3) of the MIII, which is/are present in MIMIIIYII2, and with at least 0.2% in weight of the oxide, of the YII, which is/are present in MIMIIIYII2.Type: GrantFiled: August 20, 2002Date of Patent: February 8, 2005Assignee: Schott GlasInventors: Uwe Kolberg, Ruediger Hentschel, Simone Ritter
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Patent number: 6846762Abstract: An optical glass which is free of PbO which causes environmental pollution and also is free of expensive Ta2O5 and Nb2O5 comprises, in mass %, SiO2 40-60% B2O3 1 to less than 5% Al2O3 0-3% TiO2 15.5-19%?? ZrO2 0-1% WO3 0-5% ZnO 0-5% CaO 0-4% SrO 0-10% BaO 10.5-20%?? Na2O + K2O 11-20% in which Na2O 0-9% and K2O ?6-20% a refining agent 0-1% and has optical constants of a refractive index (nd) within a range from 1.55 to less than 1.67 and an Abbe number (?d) within a range from 30 to 45.Type: GrantFiled: March 31, 2003Date of Patent: January 25, 2005Assignee: Kabushiki Kaisha OharaInventors: Shinya Mashiko, Masahiro Onozawa
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Publication number: 20040266603Abstract: The chemically resistant borosilicate glass has the following composition (in % by weight): SiO2, 67-74; B2O3, 5-10; Al2O3, 3-10; Li2O, 0-4; 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; with &Sgr;Li2O+Na2O+K2O=0.5 to 10.5 and &Sgr;MgO+CaO+SrO+BaO+ZnO=0-6. The borosilicate glass is characterized by a composition including 0 to 10% of at least one of TiO2, Bi2O3 and MoO3 and a sum total of TiO2+Bi2O3+MoO3 of 0.1 to 10%. This glass is obtained from the melt under oxidative conditions. The glass is useful in gas discharge lamps, such as Xenon lamps and fluorescent lamps, and display devices, flat structured backlighting devices, and glass-to-metal seals with Mo, Wo and Ni—Fe—Co alloys.Type: ApplicationFiled: June 4, 2004Publication date: December 30, 2004Inventors: Joerg Fechner, Franz Ott, Brigitte Hueber
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Patent number: 6828264Abstract: Provided are glass compositions uniquely applicable for the preparation of ultrafine fibers for filtration and separation applications. The glasses meet all physical and chemical criteria, including that for biodissolution rate. In particular, the glasses exhibit good moisture resistance in combination with excellent biosolubility, allowing for storage of products under humid conditions and degradation at a high rate in the body if inhaled.Type: GrantFiled: March 14, 2002Date of Patent: December 7, 2004Assignee: Johns Manville International, Inc.Inventor: Jon Frederick Bauer
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Publication number: 20040229743Abstract: A short optical glass is disclosed which is particularly suited for the applications imaging, projection, telecommunication, optical information technology and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Preferably, the glass has a refractive index of 1.54≦nd≦1.62 and an Abbe coefficient of 48≦vd=57. It further has good attenuating and ion exchange characteristics, good chemical stability and good crystallization stability. The glass comprises 35 to 50 wt.-% SiO2, 0.1 to 6 wt.-% B2O3, 0.1 to 7 wt.-% Al2O3, 0.1 to 4 wt.-% P2O5, 4 to 24 wt.-% R2O (alkali oxides), 6 to 14.5 wt.-% BaO, 0 to 12 wt.-% other RO (alkaline earth oxides), 14 to 25 wt.-% ZnO, 0 to 5 wt.-% La2O3, 0 to 10 wt.-% ZrO2, wherein R2O is an alkali oxide, RO is an alkaline earth oxide other than BaO, wherein Li2O is 6 wt.Type: ApplicationFiled: February 27, 2004Publication date: November 18, 2004Inventors: Silke Wolff, Ute Woelfel, Uwe Kolberg, Holger Kasprzik
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Patent number: 6818577Abstract: An optical waveguide element that can stably and inexpensively form an optical waveguide of low loss and low stress in a glass material by ion exchange of Ag ions, and to provide a process for producing the same are provided. The optical waveguide element is made of a multicomponent glass material, which is Na2O—B2O3—Al2O3—SiO2 glass containing from 5 to 13% by mole of Na2O, in which an optical waveguide is formed by doping with Ag ions by ion exchange. The composition is preferably SiO2: 60 to 75% by mole, B2O3: 10 to 20% by mole, Al2O3: 2 to 10% by mole, Na2O: 5 to 13% by mole, Li2O: 0 to 1% by mole, As2O3: 0 to 0.5% by mole, and Sb2O3: 0 to 0.5% by mole (provided that As2O3+Sb2O3: 0.01 to 1% mole).Type: GrantFiled: November 20, 2002Date of Patent: November 16, 2004Assignee: FDK CorporationInventors: Yasuhiro Anma, Tomoyuki Hayashi, Junko Ishizu, Tatsushi Kunou
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Patent number: 6818576Abstract: 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 &mgr;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 &mgr;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: GrantFiled: May 29, 2002Date of Patent: November 16, 2004Assignee: Hoya CorporationInventors: Mikio Ikenishi, Atsuko Morita, Xuelu Zou
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Patent number: 6815385Abstract: A tungsten sealing glass for use in a fluorescent lamp, said glass having a composition of, by mass percent, 65-76% SiO2, 10-25% B2O3, 2-6% Al2O3, 0.5-5.8% MgO+CaO+SrO+BaO+ZnO, 3-8% Li2O+Na2O+K2O, 0.01-4% Fe2O3+CeO2, 0.1-5% TiO2, 0.1-10% TiO2+Sb2O3+PbO, and 0-2% ZrO2, wherein Na2O/(Na2O+K2O)≦0.6.Type: GrantFiled: July 15, 2003Date of Patent: November 9, 2004Assignee: Nippon Electric Glass Co., Ltd.Inventors: Hiroyuki Kosokabe, Koichi Hashimoto
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Publication number: 20040220039Abstract: The invention relates to an alkali-free aluminoborosilicate glass having a coefficient of thermal expansion &agr;20/300 of between 2.8 and 3.9·10−6/K, which has the following composition (in % by weight, based on oxide) : SiO2>58-65, B2O3>6-11.5; Al2O3>14-20, MgO>3-6, CaO>4.5-10, SrO 0-<1.5, BaO>1.5-6, or SrO 0-<4, BaO>2.5-6, respectively, with SrO+BaO>3, ZnO 0-<2, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.Type: ApplicationFiled: June 1, 2004Publication date: November 4, 2004Inventor: Ulrich Peuchert
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Glass material for a substrate, glass substrate, and information recording medium employing the same
Publication number: 20040214047Abstract: A glass material for a substrate, or a glass substrate, consists essentially of the following glass ingredients: from 45 to 70 wt % of SiO2, from 1 to 10 wt % of Al2O3, from 0.5 to 8 wt % of B2O3, from 7 to 20 wt % of Li2O+Na2O+K2O, from 0.1 to 10 wt % of MgO, from 0.1 to 10 wt % of CaO, from 1 to 15 wt % of MgO+CaO, from 0.5 to 10 wt % of TiO2, from 0.5 to 10 wt % of ZrO2, from 0 to 5 wt % of ZnO, and from 0 to 8 wt % of La2O3. The glass material, or the glass substrate, has uniform composition between at the surface and in the interior and has an amorphous structure. With this design, it is possible to obtain high mechanical strength without strengthening treatment, a linear thermal expansion coefficient close to motor components, and excellent chemical durability.Type: ApplicationFiled: May 25, 2004Publication date: October 28, 2004Applicant: MINOLTA CO., LTD.Inventor: Hideki Kawai -
Publication number: 20040209758Abstract: An alkali-free aluminoborosilicate glass having a coefficient of thermal expansion &agr;20/300 of between 2.8×10−6/K and 3.8×10−6/K, which has the following composition (in % by weight, based on oxide): silicon dioxide (SiO2)>58-65, boric oxide (B2O3)>6-11.5, magnesium oxide (MgO) 4-8, barium oxide (BaO) 0-<0.5, zinc oxide (ZnO) 0-2 and aluminum oxide (Al2O3)>14-25, calcium oxide (CaO) 0-8, strontium oxide (SrO) 2.6-<4, with barium oxide (BaO)+strontium oxide (SrO)>3, or aluminum oxide (Al2O3)>14-25, calcium oxide (CaO) 0-<2, strontium oxide (SrO)>0.5-<4, or aluminum oxide (Al2O3)>21-25, calcium oxide (CaO) 0-8, strontium oxide (SrO)>2.6-<8, with barium oxide (BaO)+strontium oxide (SrO)>3, and which is highly suitable for use as a substrate glass both in display technology and in thin-film photovoltaics.Type: ApplicationFiled: May 10, 2004Publication date: October 21, 2004Applicant: Schott GlasInventors: Ulrich Peuchert, Peter Brix
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Publication number: 20040198580Abstract: Low dielectric constant dielectric ceramics for a borosilicate-based low temperature fired multi-layer substrate is disclosed which can be fired at a wide temperature range of above and below 900° C. and exhibits a low loss electrical property. By controlling the types and addition amount of the alkali earth metal oxide, the linear shrinkage behavior can be considerably controlled while maintaining the electrical property unchanged. The composition facilitates matching a linear shrinkage with a heterogeneous material having certain shrinkage characteristics.Type: ApplicationFiled: August 7, 2003Publication date: October 7, 2004Inventors: Jae-Hwan Park, Jae-Gwan Park, Dong-Soon Shin, Young-Jin Choi
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Patent number: 6794323Abstract: The borosilicate glass has a hydrolytic stability class of 1, an acid resistance class of 1 and a lye resistance class of at least 2 and a composition (in % by weight, based on oxide) of SiO2 70.5-76.5; B2O36.5-<11.5; Al2O3 4-8; Li2O 0.5-2; Na2O 4.5-9; K2O 0-5; with Li2O+Na2O+K2O 5.5-10.5; MgO 0-1; CaO 0-2; and CeO2 0-1, and optionally refining agents. This borosilicate glass is preferably free of As2O3, Sb2O3 and BaO and is then especially advantageous as a pharmaceutical packaging material. It also may contain up to 3% by weight TiO2 to block UV radiation. The borosilicate glass may include up to 0.5% by weight ZrO2 to reach a lye resistance class of 1.Type: GrantFiled: August 13, 2002Date of Patent: September 21, 2004Assignee: Schott GlasInventors: Ulrich Peuchert, Christian Kunert, Reiner Bartsch
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Patent number: 6794020Abstract: The glass ceramic panels are non-transparent and have at least one decoration. In order to fulfill the requirements for a glass ceramic panel that provides a cooking surface for a cooking unit in a variety of different pleasing colors, especially a creamy white color shade (BISQUE), in an economical manner, the glass ceramic panel has a predominant crystalline phase of keatite mixed crystals and a full-surface decorative coating that covers at least 80 percent of the upper smooth surface of the glass ceramic substrate. The full-surface decorative coating is provided in a different color from the glass ceramic panel. Methods for making these glass ceramic panels are described.Type: GrantFiled: September 7, 2001Date of Patent: September 21, 2004Assignee: Schott GlasInventors: Monica Cotlear de Witzmann, Angelina Milanovska, Daniela Petto, Dietmar Wennemann, Dieter Schoenig, Friedrich Siebers
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Patent number: 6794321Abstract: Provided are glass compositions uniquely applicable for the preparation of ultrafine fibers for filtration and separation applications. The glasses meet all physical and chemical criteria, including that for biodissolution rate.Type: GrantFiled: March 14, 2002Date of Patent: September 21, 2004Assignee: Johns Manville International, Inc.Inventor: Jon Frederick Bauer
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Patent number: 6777359Abstract: A polarizing glass comprising geometrically anisotropic particles dispersed in an oriented manner in at least the surface of a glass base body. The glass base body is denoted by the weight percentages of 50-65 percent SiO2, 15-22 percent B2O3, 0-4 percent Al2O3, 2-8 percent ZrO2, 6 percent <Al2O3+ZrO2<12 percent, 6-16 percent R2O (where R denotes at least one from among Li, Na, and K), 0-3 percent Li2O, 0-9 percent Na2O, 4-16 percent K2O, Li2O+Na2O<K2O, 0-7 percent BaO and/or SrO, and 0-3 percent TiO2. The glass base body comprises per 100 weight percent of essentially the above composition at least 0.15-1.0 percent Ag and at least the chemical equivalent to Ag of Cl and/or Br; and the geometrically anisotropic silver particles are metallic Ag particles. The polarizing glass is employed in optical products such as optical isolators.Type: GrantFiled: January 2, 2002Date of Patent: August 17, 2004Assignee: Hoya CorporationInventors: Toshiharu Yamashita, Yoshitaka Yoneda
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Publication number: 20040152580Abstract: 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: ApplicationFiled: December 2, 2003Publication date: August 5, 2004Inventor: Paulo Marques
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Patent number: 6764972Abstract: A compositional range for a mother glass composition for graded index lenses which has a desired refractive index and is less apt to be devitrified and to develop cracks upon ion exchange was obtained by incorporating at least a given amount of one or more ingredients which are selected from oxides of metal elements ranging from yttrium, atomic number 39, to tantalum, atomic number 73, and which are less apt to cause glass coloration into a glass based on SiO2—TiO2—Li2O—Na2O and containing no lead oxide. In particular, a compositional range in which a large angular aperture is obtained and devitrification is less apt to occur was obtained by incorporating Ta2O5 and ZrO2 in a specific proportion and in specific amounts.Type: GrantFiled: October 11, 2001Date of Patent: July 20, 2004Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Tetsuro Yoshii, Jun Yamaguchi
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Patent number: 6764746Abstract: An object of the invention is to provide a low temperature fired porcelain having an optimum firing temperature not higher than 1000° C. a reduced dielectric constant ∈ r, an improved quality coefficient and a low incidence of cracks. The invention provides a low temperature-fired porcelain comprising a barium component in a calculated amount of 10 to 64 weight percent when calculated as BaO, a silicon component in a calculated amount of 20 to 80 weight percent when calculated as SiO2, an aluminum component in a calculated amount of 0.1 to 20 weight percent when calculated as Al2O3, a boron component in a calculated amount of 0.3 to 1.0 weight percent when calculated as B2O3 a zinc component in a calculated amount of 0.5 to 20 weight percent when calculated as ZnO, and a bismuth component in a calculated amount of not higher than 20 weight percent when calculated as Bi2O3.Type: GrantFiled: March 5, 2002Date of Patent: July 20, 2004Assignees: NGK Insulators, Ltd., Soshin Electric Co., Ltd.Inventors: Takeshi Oobuchi, Yoshiaki Naruo, Yoshinori Ide
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Publication number: 20040132605Abstract: There is provided an optical glass suitable for mold pressing having optical constants of a refractive index (nd) within a range from 1.60 to 1.69 and Abbe number (&ngr;d) within a range from 35 to 45, having a glass transition point (Tg) within a range from 300° C. to 500° C., being free from devitrification when the optical glass is held at a temperature which is higher by 100° C.Type: ApplicationFiled: December 17, 2003Publication date: July 8, 2004Inventor: Susumu Uehara
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Publication number: 20040127342Abstract: The present invention is to provide glass composition of a substrate for display consisting essentially of, as calculated in weight percent on an oxide basis, 56.0˜62.0% SiO sub.2, 13.0˜18.0% Al sub.2 O sub.3, 9.0˜13.5% B sub.2 O sub.3, 1.0˜8.0% SrO, 0.1˜8.0% BaO, 3.5-8.5% CaO, 0˜1.0% MgO, 0.1˜1.5% ZnO, 0.1˜1.5% ZrO sub.2 and 0˜1.0% BeO, provided that the total weight percent of CaO, MgO, ZnO, ZrO sub.2 and BeO is preferably within 4.0˜9.0%.Type: ApplicationFiled: December 27, 2002Publication date: July 1, 2004Applicant: China Optoelectronics Technology Corp.Inventors: Chin Chao Liang, I Po Kuo, Hua Ching Tan
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Patent number: 6753279Abstract: A glass composition suitable for manufacturing plasma displays and large-area displays using the fusion draw process is provided. The glass composition includes 59-66 mol % SiO2, 14.5-18.0 mol % Al2O3, 8.5-12.0 mol % Na2O, 2.5-6.5 mol % K2O, 2.5-9.0 mol % CaO, 0.0-3.0 mol % MgO, 0.0-3.0 mol % SrO, 0.0-3.0 mol % BaO, and 0.0-5.0 mol % MgO+SrO+BaO.Type: GrantFiled: October 30, 2001Date of Patent: June 22, 2004Assignee: Corning IncorporatedInventor: Jeffrey T. Kohli
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Publication number: 20040053768Abstract: An optical fiber has a fiber core with a higher refractive index and a cladding surrounding the core with a lower refractive index. The fiber core is made of a multi-component oxide glass composition which consists of a glass-forming component and two Raman-active components. The glass former is SiO2 and the Raman active components are of Li2O and Nb2O5. The concentration of the glass former is between 30 and 90 mol % and of the Raman active components is up to 50 mol % in total. The composition may further include a glass-modifying component of alkaline such as Li2O, Na2O, K2O, Rb2O, Cs2O or earth-alkaline such as BeO, MgO, CaO, SrO, BaO in a concentration of up to 40 mol %.Type: ApplicationFiled: July 11, 2003Publication date: March 18, 2004Applicant: ALCATELInventors: Ekaterina Bourova, Stephanie Blanchandin, Jerome Garapon
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Publication number: 20040033880Abstract: The invention describes a lead-free and arsenic-free special short flint glass with a refractive index 1.60≦nd<1.65, an Abbe number of 41≦&ngr;d<52, a relative partial dispersion 0.551≦PgF<0.570 in the blue spectral region, a relative partial dispersion 0.507≦PCs≦0.525 in the red spectral region, a negative deviation of the relative partial dispersion from the normal line &Dgr; Pg,F≦−0.0045 and an improved chemical resistance which has the following composition (in % by weight): 1 SiO2 >50-65 Al2O3 0-7 B2O3 0-6 Li2O 0-6 Na2O 3-11 K2O 0-6 MgO 0-12 CaO 1-12 BaO 0-8 La2O3 0-15 Ta2O5 0-10 Nb2O5 4-20 ZrO2 >10-20 &Sgr;(CaO + MgO + BaO) 1-25 &Sgr;(Na2O + K2O + Li2O) 3-20 SiO2/(ZrO2 + La2O3 + Nb2O5 + Ta2O5) 1.5-2.Type: ApplicationFiled: June 6, 2003Publication date: February 19, 2004Inventors: Karin Naumann, Uwe Kolberg, Frank-Thomas Lentes
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Publication number: 20040029700Abstract: A new lead-free glass flux suitable for the decoration of ceramic materials comprises SiO2, Al2O3, B2O3 and Li2O as essential components. The lead-free glass flux is a glass mixture in which a glass composition having a relatively low coefficient of thermal expansion and a glass composition having a relatively high coefficient of thermal expansion and a relatively high chemical resistance are mixed at an appropriate ratio.Type: ApplicationFiled: July 31, 2003Publication date: February 12, 2004Applicant: NORITAKE CO., LIMITEDInventors: Keizo Kato, Takuya Kawamura, Nobuhiro Inoko, Hiroshi Norizuki
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Publication number: 20040018934Abstract: The process of the invention produces alkali-free aluminosilicate glass having an Al2O3-content of more than 12% by weight with the addition of from 0.005% by weight to 0.6% by weight of sulfate for batch formulation.Type: ApplicationFiled: March 25, 2003Publication date: January 29, 2004Inventors: Franz Ott, Karin Naumann, Otmar Becker, Ralf Diezel
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Publication number: 20040014583Abstract: A tungsten sealing glass for use in a fluorescent lamp, said glass having a composition of, by mass percent, 65-76% SiO2, 10-25% B2O3, 2-6% Al2O3, 0.5-5.8% MgO+CaO+SrO+BaO+ZnO, 3-8% Li2O+Na2O+K2O, 0.01-4% Fe2O3+CeO2, 0.1-5% TiO2, 0.1-10% TiO2+Sb2O3+PbO, and 0-2% ZrO2, wherein Na2O/(Na2O+K2O)≦0.6.Type: ApplicationFiled: July 15, 2003Publication date: January 22, 2004Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Hiroyuki Kosokabe, Koichi Hashimoto
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Patent number: 6680266Abstract: The invention relates to low-alkali or alkali-free alkaline-earth aluminoborosilicate glasses of the following composition (in wt.-% on an oxide basis) SiO2>49-65; B2O3 0.5-4.5; Al2O3>10-23; MgO>2.7-7; CaO 0.5-10; SrO>15-22; BaO 0.5-7; provided that MgO+CaO+SrO+BaO>20-35; SnO2 0-2; ZrO2 0-2; ZrO2 0-2; TiO20-2; CeO20-1.5; ZnO 0-1; Na2O 0-2; K2O 0-2; provided that Na2O+K2O equals 0-3. The inventive glasses are especially suitable for use as substrates in thin film photovoltaic technology and as glasses for bulbs.Type: GrantFiled: June 14, 2002Date of Patent: January 20, 2004Assignee: Schott GlasInventors: Ulrich Peuchert, Peter Brix, Andreas Hübner
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Patent number: 6667259Abstract: An optical colored glass with a composition (in percent by weight based on oxide) of SiO2 30-75; K2O 5-35; TiO2 0-5; B2O3>4-17; ZnO 5-37; F 0.01-10 MIMIIIY2II 0.1-3, whereby MI=Cu+, Ag+, MIII=In3+, Ga3+, Al3+, YII=S2−, Se2−, Te2−, as well as the use of this glass as a long-pass cutoff filter.Type: GrantFiled: August 20, 2002Date of Patent: December 23, 2003Assignee: Schott GlasInventors: Rolf Clasen, Monika Gierke, Jochen Freund, Simone Ritter, Uwe Kolberg