And Zinc Or Zirconium Patents (Class 501/67)
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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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Patent number: 7566673Abstract: A chemically strengthened glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD, wherein a strengthened formed by chemical strengthening exists on the outer edge surface and on the inner edge surface but substantially not on a surface on which an information recording layer is formed.Type: GrantFiled: February 23, 2004Date of Patent: July 28, 2009Assignee: Konica Minolta Opto, Inc.Inventor: Hideki Kawai
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Publication number: 20090142568Abstract: 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 1%?(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: November 25, 2008Publication date: June 4, 2009Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez, Robert Michael Morena
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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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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 -
Publication number: 20090099001Abstract: 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: January 18, 2008Publication date: April 16, 2009Inventor: Paulo Marques
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Patent number: 7517822Abstract: The invention relates to a borosilicate glass having the following composition (in wt. % based on oxide content): between 55 and 80 of SiO2; between 8 and 25 of B2O3; between 0.5 and 10 of Al2O3; between 1 and 16 of Li2O+Na2O+K2O; between 0 and 6 of MgO+CaO+SrO+BaO; between 0 and 3 of ZnO; between 0 and 5 of ZrO2; between 0 and 5 of Bi2O3; and between 0 and 3 of MoO3; the sum of the Bi2O3 and MoO3 amounting to between 0.01 and 5. The invention also relates to a fluorescent lamp, especially a miniature fluorescent lamp.Type: GrantFiled: March 26, 2003Date of Patent: April 14, 2009Assignee: Schott AGInventors: Joerg Fechner, Franz Ott, Rainer Haspel, Ralf Diezel
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Patent number: 7515802Abstract: The glass fiber for an optical amplifier has a matrix glass core, a first glass cladding, and a second glass cladding. The matrix glass core has a composition, in mol %, of Bi2O3, 30-60; SiO2, 0.5-40; B2O3, 0.5-40; Al2O3, 0-30; Ga2O3, 0-20; Ge2O3, 0-25 ; La2O3, 0-15; Nb2O5, 0-10; SnO2, 0-30; alkali metal oxides, 0-40; and Er2O3, 0.05-8. The glass claddings have the same composition as the core, except that a transition metal compound is included as an absorbent. The refraction index of the matrix glass is > about 1.85, the refraction index of the first glass cladding is less than that of the core, and the refraction index of the second glass cladding is higher than that of the first.Type: GrantFiled: September 7, 2002Date of Patent: April 7, 2009Assignee: Schott AGInventors: Ulrich Peuchert, Ruediger Sprenhard, Martin Letz, Frank Buellesfeld
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Publication number: 20090088309Abstract: A glass composition of the present invention includes the following components, in terms of mass % and mass ppm: 60 to 79% SiO2; 0 to 13% B2O3 (exclusive of 13%); 0 to 10% Al2O3; 0 to 10% Li2O; more than 0% but not more than 20% Na2O; 0 to 15% K2O; 0 to 10% MgO; 0 to 15% CaO; 0 to 15% SrO; 0 to 15% BaO; 0 to 10% ZnO; 0 to 15% Nb2O5; 0 to 20% Ta2O5; more than 0.02% but not more than 10% TiO2; and 0.5 to 50 ppm T-Fe2O3 (where T-Fe2O3 denotes a total iron oxide obtained by converting all of iron compounds into Fe2O3).Type: ApplicationFiled: February 14, 2007Publication date: April 2, 2009Applicant: Nippon Sheet Glass Company, LimitedInventors: Haruki Niida, Akihiro Koyama
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Publication number: 20090075806Abstract: The invention provides an optical glass which comprises, in terms of % by mass on the basis of oxides, 35-45% of SiO2, 12-20% of B2O3, 2-7% of Li2O, 0.1-10% of ZnO, 2-15% of Al2O3, 10-40% of BaO, 0-5% of K2O, 0-10% of Na2O, and 0-20% of Gd2O3, wherein SiO2+B2O3 is 47-58% and Li2O+Na2O+K2O is 5-14%.Type: ApplicationFiled: November 19, 2008Publication date: March 19, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kenji IMAKITA, Naoki Sugimoto
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Patent number: 7490486Abstract: The process of producing a refined borosilicate glass includes preparing a glass batch with a composition in wt. % on the basis of oxide content of SiO2, 65-82; Al2O3, 2-8; B2O3, 5-13; MgO+CaO+SrO +BaO+ZnO, 0-7; ZrO2, 0-2; and Li2O+Na2O+K2O, 3-10; adding 0.05 wt. % to 0.6 wt. % of sulfate(s) expressed as SO3 to the glass batch as the refining agent; melting the glass batch including the refining agent to form melted glass; and then hot-shaping the borosilicate glass. The refining agent may also include from 0.01 wt. % to 0.6 wt. % of F? or from 0.015 wt. % to 0.6 wt. of Cl?. The sulfate is preferably an alkali metal and/or alkaline earth metal sulfate or sulfates.Type: GrantFiled: June 7, 2002Date of Patent: February 17, 2009Assignee: Schott AGInventors: Karin Naumann, Christof Kass, Franz Ott
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Patent number: 7491668Abstract: 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 ?Li2O+Na2O+K2O=0.5 to 10.5 and ?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: GrantFiled: June 4, 2004Date of Patent: February 17, 2009Assignee: Schott AGInventors: Joerg Fechner, Franz Ott, Brigitte Hueber
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Publication number: 20090038344Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.Type: ApplicationFiled: October 17, 2008Publication date: February 12, 2009Applicant: IVOCLAR VIVADENT AGInventors: Elke Apel, Wolfram Holand, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker M. Rheinberger
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Publication number: 20090042711Abstract: [Object] To provide a high-refractivity high-dispersion optical glass having excellent stability [Solution Means] An optical glass which is formed of an oxide glass containing 30 to 70 cationic % of Bi3+ and has a liquidus temperature of 800° C. or lower.Type: ApplicationFiled: August 5, 2008Publication date: February 12, 2009Applicant: HOYA CORPORATIONInventors: Xuelu Zou, Yasuhiro Fujiwara, Yoshio Nojima
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Publication number: 20090023575Abstract: The present invention provides a glass having a refractive index and a coefficient of thermal expansion close to those of quartz glass, respectively, and also having anti-devitrification properties excellent enough to avoid the development of defects such as devitrification on the glass surface even when it is molded by drawing process or reheat forming, more specifically an optical glass for use in optical communication devices, particularly an optical glass for use in a stub. The optical glass of the invention is composed of a borosilicate glass having a refractive index of from 1.44 to 1.46, a coefficient of thermal expansion of from 10×10?7 to 50×10?7/° C., and a liquidus viscosity of 105.5 dPa·s or more.Type: ApplicationFiled: June 29, 2006Publication date: January 22, 2009Applicant: NIPPON ELECTRIC GLASS CO., LTD.Inventors: Syunsuke FUJITA, Koichi YABUUCHI
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Patent number: 7470641Abstract: Thermal insulation is provided for use in applications requiring continuous resistance to temperatures of 1260° C. without reaction with alumino-silicate firebricks, the insulation comprises fibers having a composition in wt % 65%<SiO2<86%, MgO<10%, 14%<CaO<28%, Al2O3<2%, ZrO2<3%, B2O3<5%, P2O5<5%, 72%<SiO2+ZrO2+B2O3+5*P2O5, 95%<SiO2+CaO+MgO+Al2O3+ZrO2+B2O3+P2O5. Addition of elements selected from the group Sc, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y or mixtures thereof improves fiber quality and the strength of blankets made from the fibers.Type: GrantFiled: January 2, 2003Date of Patent: December 30, 2008Assignee: The Morgan Crucible Company PLCInventors: Gary Anthony Jubb, Craig John Freeman
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Patent number: 7452607Abstract: Provided is a nonlead glass for covering an electrode, which comprises, in mol %, B2O3 15-65%, SiO2 2-38%, MgO 2-30%, MgO+CaO+SrO+BaO 5-45%, Li2O 1-15%, Li2O+Na2O+K2O 2-25% and others, and which comprises ZnO 0-15%. Provided is a nonlead glass for covering an electrode, which comprises, in mol %, B2O3 25-65%, SiO2 2-38%, MgO 2-30%, MgO+CaO+SrO+BaO 5-45%, Li2O+Na2O+K2O 2-25%, Al2O3 0-30, TiO 0-10% and ZnO 0-15%.Type: GrantFiled: November 21, 2007Date of Patent: November 18, 2008Assignee: Asahi Glass Company, LimitedInventors: Hitoshi Onoda, Yu Goshima, Yumiko Aoki
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Publication number: 20080268295Abstract: Glass-ceramics include SiO2, Al2O3 and Li2O on oxide basis. In the glass-ceramics, total amount in mass % of SiO2 and Al2O3 is less than 77% and Li2O/(SiO2+Al2O3) which is the ratio in mass % of the amount of Li2O to the total amount of SiO2 and Al2O3 is 0.064 or over. The glass-ceramics include at least one crystal phase selected from the group consisting of ?-quartz, ?-quartz solid solution, ?-eucryptite, ?-eucryptite solid solution, ?-spodumene and ?-spodumene solid solution.Type: ApplicationFiled: April 23, 2008Publication date: October 30, 2008Applicant: OHARA INC.Inventor: Toshitaka YAGI
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Publication number: 20080269037Abstract: The present invention is to provide glass exhibiting both of a low thermal expansion and a low-temperature melting property and to provide glass which is able to be manufactured under the condition where an average linear thermal expantion coefficient at 0° C. to 50° C. is preferably not less than 40×10?7° C.?1, more preferably 35×10?7° C.?1 and, most preferably, 33×10?7° C.?1 and a fusing temperature is preferably not higher than 1550° C., more preferably not higher than 1540° C. and, most preferably, not higher than 1530° C. The means therefor is the glass, characterized in that, where an average linear thermal expantion coefficient at 0° C. to 50° C. is not more than 40×10?7° C.?1, an Al2O3 component and a B2O3 component on the basis of oxides are contained and the ratio of B2O3/Al2O3 in terms of % by mass is not less than 0.8.Type: ApplicationFiled: April 22, 2008Publication date: October 30, 2008Applicant: OHARA INC.Inventor: Hisashi Murozumi
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Publication number: 20080255265Abstract: The present invention relates to a glass filler material with an average particle size of 0.1-20 ?m. It further relates to a method for producing a glass filler material. The glass filler material comprises 65-99.95 mol % silicon dioxide (SiO2), 0-15 mol % aluminum and/or boron oxide (Al2O3, B2O3), 0-30 mol % zirconium and/or titanium and/or hafnium oxide (ZrO2, TIO2, HfO2), Y2O3 and/or Sc2O3 and/or La2O3 and/or CeO2 and/or other lanthanide oxides, 0.05-4 mol % alkali metal oxides (Na2O, Li2O, K2O, Rb2O, Cs2O), 0-25 mol % earth alkali metal oxides (MgO, CaO, SrO, BaO). The glass filler material shows a low concentration of alkali ions and is used for composites with cationically curing properties and for dental composites and dental restoration materials.Type: ApplicationFiled: December 22, 2004Publication date: October 16, 2008Inventors: Stefan Hoescheler, Dirk Albrecht, Andrea Stippschild, Karsten Dede
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Publication number: 20080254301Abstract: 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; ?LiO+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. It is especially useful in lamps display devices and glass-to-metal seals.Type: ApplicationFiled: April 8, 2008Publication date: October 16, 2008Inventors: Joerg Fechner, Andreas Reisse, Franz Ott, Brigitte Hueber
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Publication number: 20080227616Abstract: The invention relates to novel uses of glass ceramics, wherein glass ceramics, in particular, in the form of a glass ceramic tube, are used. Said glass ceramics contain 0—less than 4 wt % P205 and 0 less than 8 wt-% CaO. The tubes can be used in multiple areas of application and/or in multiple types of lamps, for example in general lighting or car lights and in heat radiators, such as halogen lamps or incandescent lamps, and/or in high pressure discharge lamps or low pressure discharge lamps. The glass ceramics, can also, in particular, be minimised in order to form known backlighting in conjunction with background lighting of flat screens. Said type of glass ceramics have excellent spectral transmission in the visible wave length rang and are solarisation stable and absorb strong UV light.Type: ApplicationFiled: January 4, 2005Publication date: September 18, 2008Inventors: Ulrich Peuchert, Joerg Hinrich Fechner, Thilo Zachau, Uwe Kolberg, Paul Kissl, Rainer Liebald, Dirk Sprenger
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Publication number: 20080213495Abstract: The present invention provides a mother glass composition for gradient-index lens, from which a lead-free Li-based gradient-index lens that is excellent in weather resistance, in particular weather resistance in the presence of water, can be manufactured. The mother glass composition includes the following components, indicated by mol %: 40?SiO2?65; 1?TiO2?10; 0.1?MgO?22; 0.15?ZnO?15; 2?Li2O?18; 2?Na2O?20; 0?B2O3?20; 0?Al2O3?10; 0?K2O?3; 0?Cs2?O?3; 0?Y2O3?5; 0?ZrO2?2; 0?Nb2O5?5; 0?In2O3?5; 0?La2O3?5; and 0?Ta2O5?5. The mother glass composition further includes at least two oxides selected from CaO, SrO, and BaO each in a range of 0.1 mol % to 15 mol %. The total of MgO+ZnO is greater than or equal to 2 mol %. The molar ratio of ZnO/(MgO+ZnO) is in a range of 0.07 to 0.93. The total of Li2O+Na2O is in a range of 6 mol % to 38 mol %. The total of Y2O3+ZrO2+Nb2O5+In2O3+La2O3+Ta2O5 is in a range of 0 mol % to 11 mol %.Type: ApplicationFiled: February 15, 2008Publication date: September 4, 2008Applicant: Nippon Sheet Glass Company, LimitedInventors: Taro Miyauchi, Tatsufumi Shiba
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Publication number: 20080194394Abstract: The invention relates to a glass substrate whose chemical composition comprises the following components within limits defined thereafter and expressed in percentages by weight: 58-72% by weight SiO2, 0.8-3 by weight TiO2, 2-15 by weight B2O3, 10-25 by weight Al2O3, 5-12 by weight CaO, 0-3 by weight MgO, 0-6 by weight BaO, 0-4 by weight SrO, 0-3 by weight ZnO, and 0-1 by weight R2O.Type: ApplicationFiled: May 18, 2006Publication date: August 14, 2008Applicant: Saint-Gobain Glass FranceInventor: Emmanuel Lecomte
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Publication number: 20080188367Abstract: The present invention relates to a glass composition intended for the manufacture of thermally stable substrates or plates that comprises the constituents given below, in the following proportions by weight: SiO2 67-75% Al2O3 0.5-1%?? ZrO2 2-7% Na2O 2-9% K2O ?4-11% MgO 0-5% CaO ?5-10% SrO ?5-12% BaO 0-3% B2O3 0-3% Li2O 0-2% with the relationships: Na2O+K2O>10% MgO+CaO+SrO+BaO>12% and said composition having a thermal expansion coefficient between 80 and 90×10?7/° C. It also relates to the use of these glass compositions for the production of substrates, especially for emissive displays and for fire-resistant glazing.Type: ApplicationFiled: April 7, 2008Publication date: August 7, 2008Applicant: SAINT-GOBAIN GLASS FRANCEInventor: Catherine GOULAS
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Patent number: 7396788Abstract: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 15% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 65 to 90% by weight; a total of 7 to 20% by weight of R2O compounds, where R=Li, Na, and K; and a total of 0 to 12% by weight, zero inclusive, of R?O compounds, where R?=Mg, Ca, Sr, Ba, and Zn. Moreover, the following conditions are fulfilled: B2O3=0% by weight, or Al2O3/B2O3?1.0; and (SiO2+Al2O3+B2O3)/(the total of R2O compounds+the total of R2O compounds)?3.Type: GrantFiled: June 13, 2003Date of Patent: July 8, 2008Assignee: Minolta Co., Ltd.Inventors: Hideki Kawai, Toshiharu Mori
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Patent number: 7393801Abstract: Objects of the present invention are: a lead-free enamel composition comprising finely divided glass particles, finely divided pigment particles and an organic binder, characterised in that the glass of said particles is a lead-free mineral glass, essentially having the composition below, which is expressed in percentages by weight of oxides: SiO2 45-60 B2O3 ?0-10 Al2O3 ?6-17 Na2O 0-7 K2O 0-7 Li2O 0-7 CaO ?0-12 BaO 13-27 ZnO ?3-17 MgO 0-9 TiO2 0-2 ZrO2 0-7 with Na2O + K2O + Li2O >4 the enamel able to be obtained by firing of said composition; glass-ceramic articles, which are decorated with said enamel; and new lead-free mineral glasses.Type: GrantFiled: September 27, 2004Date of Patent: July 1, 2008Assignee: EurokeraInventors: Lionel Beunet, Sebastien Hyvart, Fabrice Minier, Sophie Peschiera, Christophe Remy
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Patent number: 7390761Abstract: The invention relates to an alkaline-earth aluminosilicate glass with the following composition (in wt. %, based on oxide content): SiO2 >58-62; B2O3 0 5.5; Al2O3 13.5 17.5; MgO 0-7; CaO 5.5-14; SrO 0-8, BaO 6-14; ZrO2 0-2; CeO2 0.001 0.5; TiO2 0.01-2. The glass is particularly suitable for use as a bulb material for halogen light bulbs.Type: GrantFiled: January 29, 2003Date of Patent: June 24, 2008Assignee: Schott AGInventors: Joery Hinrich Fechner, Peter Brix, Franz Ott
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Publication number: 20080146430Abstract: Glass compositions are provided that are useful in electronic applications, e.g., as reinforcements in printed circuit board substrates. Reduced dielectric constants are provided relative to E-glass, and fiber forming properties are provided that are more commercially practical than D-glass.Type: ApplicationFiled: December 14, 2006Publication date: June 19, 2008Inventors: Hong Li, Cheryl A. Richards
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Publication number: 20080139375Abstract: Decorative paints are typically burned in at relatively high temperatures, preferably in connection with the thermal ceramicizing process. In order to provide a glass ceramic panel having a cooking surface with a pleasing deep black, very smooth decoration by a burned-in decorative paint, the glass ceramic panel is formed from a melt that is black and the decorative paint on the black glass ceramic panel contains a colorless glass flux and from 0 to 10 percent by weight of at least one black pigment. The decorative paint can consist of the colorless melted-on glass flux. The glass flux preferably has a composition in percent by weight of Li2O, 0-5; Na2O, 0-5; K2O, <2; ?Li2O+Na2O+K2O, 1-10; MgO, 0-3; CaO, 0-4; SrO, 0-4; BaO, 0-4; ZnO, 0-4; B2O3, 15-27; Al2O3, 10-20; SiO2, 43-58; TiO2, 0-3; ZrO2, Sb2O3, 0-2; F, 0-3.Type: ApplicationFiled: August 18, 2004Publication date: June 12, 2008Inventors: Dietmar Wennemann, Harald Striegler
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Publication number: 20080139376Abstract: An optical glass for the manufacture of large transmission optics, such as lenses having a thickness of 100 millimeters or more, comprises 35 to 70 wt.-% SiO2, 17 to 35 wt.-% Al2O3, 3 to 17 wt.-% P2O5, 0 to 6 wt.-% Li2O, 0.5 to 4 wt.-% MgO, 0.5 to 3 wt.-% ZnO, a maximum of 1 wt.-% CaO, a maximum of 0.5 wt. % BaO, 0.5 to 6 wt.-% TiO2, 0.5 to 3 wt.-% ZrO2, 0 to 1 wt.-% Na2O, 0 to 1 wt.-% K2O, a maximum of 1 wt.-% of refining agents (As2O3, SP2O3) and a maximum of 500 ppm of other contaminants. The glass composition may be equal to the composition of the glass ceramic Zerodur® and allows to manufacture large transmission optics in a cost-effective way, has a maximum of transmittance which is in the range of a He—Ne lasers and has a CTE of about 3·10?6/K.Type: ApplicationFiled: December 5, 2007Publication date: June 12, 2008Inventors: Thorsten Doehring, Ina Mitra
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Patent number: 7381258Abstract: The invention relates to an opaque dental ceramic for burning on a rack or implant of dental restoration at least comprising SiO2, Al2O3, B2O3, Na2O, K2O as well as TiO2. To cover the non-dental-coloured implant material sufficiently the invention provides that the opaque dental ceramic is clouded by precipitation of one or more crystalline TiO2 phases.Type: GrantFiled: June 28, 2005Date of Patent: June 3, 2008Assignee: Degudent GmbHInventor: Klaus Krumbholz
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Patent number: 7375043Abstract: The method for making UV-absorbing glass, which transmits in a visible range, includes melting raw materials to form a melt and producing the melt under oxidative conditions. The UV-absorbing glass is free of PbO and has the following composition (in % by weight): 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; with ? Li2O+Na2O+K2O=0.5 to 16 and ? MgO+CaO+SrO+BaO+ZnO=0-10. The melt composition is characterized by including 0.1 to 10 % TiO2 and from 0.01-10 % As2O3. The glass made by the method and its properties are also disclosed. The glass is useful in lamps, LCD displays, monitors and glass-to-metal seals with molybdenum, tungsten and Fe—Co—Ni alloys.Type: GrantFiled: June 4, 2004Date of Patent: May 20, 2008Assignee: Schott AGInventors: Joerg Fechner, Andreas Reisse, Franz Ott, Brigitte Hueber
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Patent number: 7365037Abstract: 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: March 11, 2005Date of Patent: April 29, 2008Assignee: Shin-Etsu Quartz Products Co., Ltd.Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
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Patent number: 7358205Abstract: An alkali-free glass substrate containing, by mass percent, 50-70% of SiO2, 10-25% of Al2O3, 5-20% of B2O3, 0-10% of MgO, 0-15% of CaO, 0-10% of BaO, 0-10% of SrO and 0-5% of ZnO, also containing SnO2 and/or Sb2O3 and having a ?-OH value of at least 0.485/mm.Type: GrantFiled: September 1, 2004Date of Patent: April 15, 2008Assignee: Nippon Electric Glass Co., Ltd.Inventors: Toshiharu Narita, Tatsuya Takaya, Masahiro Tomamoto
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Patent number: 7341965Abstract: The invention relates to bismuth oxide glass, containing germanium oxide, a method for the production thereof, the use thereof and a glass fiber consisting of said inventive glass.Type: GrantFiled: September 7, 2002Date of Patent: March 11, 2008Assignee: Schott AGInventors: Bianca Schreder, Ruediger Sprengard, Ulrich Peuchert, Martin Letz, Joseph S. Hayden, Sally Pucilowski
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Patent number: 7341967Abstract: The present invention provides a novel glass material that allows the production of a glass product having both excellent chemical durability and high precision by a press molding method. Specifically, the present invention provides a glass for press molding, comprising 38% to 45% by weight of SiO2, 18% to 27% by weight of B2O3, 16% to 25% by weight of Al2O3, 2% to 12% by weight of ZnO, no more than 3% by weight of MgO, no more than 3% by weight of CaO, no more than 3% by weight of BaO, 13% to 18% by weight of Li2O, no more than 3% by weight of K2O, and no more than 2% by weight of Na2O; wherein the glass has a deformation temperature of 520° C. or lower; and the glass has a water resistance of grade 2 or higher as measured according to the Japanese Optical Glass Industrial Standard method for measuring the chemical durability of an optical glass.Type: GrantFiled: September 7, 2004Date of Patent: March 11, 2008Assignees: Isuzu Glass Co., Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Takaharu Hosokawa, Naoki Kikuchi, Tatsuya Suetsugu, Kazuhisa Kimura, Tadashi Hasegawa, Toshihiko Einishi, Takashi Tarumi, Kohei Kadono
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Patent number: 7341966Abstract: 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: December 2, 2003Date of Patent: March 11, 2008Assignee: Corning IncorporatedInventor: Paulo Marques
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Patent number: 7326666Abstract: Glass for forming barrier ribs for e.g. a plasma display panel, which consists, as represented by mol % based on the following oxides, essentially of from 24 to 50% of SiO2, from 13 to 23% of B2O3, from 10 to 32% of ZnO, from 3 to 20% of Li2O, from 1 to 9% of Na2O, from 1 to 15% of Al2O3, from 0 to 20% of MgO+CaO+SrO+BaO, and from 0 to 9% of Bi2O3, wherein ((B2O3+ZnO)—Al2O3) is at least 24 mol %; in a case where ZrO2 is contained, its content is at most 2 mol %; and neither PbO nor F is contained.Type: GrantFiled: November 5, 2004Date of Patent: February 5, 2008Assignee: Asahi Glass Company, LimitedInventors: Hiroyuki Yamamoto, Satoshi Fujimine, Hitoshi Onoda, Hiroshi Usui
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Patent number: 7323427Abstract: 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: GrantFiled: February 27, 2004Date of Patent: January 29, 2008Assignee: Schott AGInventors: Silke Wolff, Ute Woelfel, Uwe Kolberg, Holger Kasprzik
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Patent number: 7247987Abstract: Disclosed is a rear plate of a plasma display panel. In the rear plate, a dielectric layer or a barrier wall layer is formed by forming slurry in a tape of a green tape and then attaching the green tape to upper surfaces of electrodes and a glass substrate. Therefore, a PDP employing a rear plate according to the present invention has superior electric and optical characteristics.Type: GrantFiled: December 9, 2002Date of Patent: July 24, 2007Assignee: LG Micron Ltd.Inventor: Jae-Chil Seo
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Patent number: 7217672Abstract: An optical glass wherein an amount of change in refractive index (?n: difference in refractive index between a state before radiation and a state after radiation) caused by radiation of laser beam at wavelength of 351 nm having average output power of 0.43W, pulse repetition rate of 5 kHz and pulse width of 400 ns for one hour is 5 ppm or below is provided. The optical glass comprises a fluorine ingredient and/or a titanium oxide ingredient and/or an arsenic oxide ingredient. The optical glass suffers little change in refractive index by radiation of strong light having wavelengths of 300 nm to 400 nm such as ultraviolet laser.Type: GrantFiled: September 18, 2003Date of Patent: May 15, 2007Assignee: Kabushiki Kaisha OharaInventors: Akira Masumura, Muneo Nakahara, Satoru Matsumoto, Tatsuya Senoo
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Patent number: 7217673Abstract: The borosilicate glass of the invention is highly resistant to solarization, because it is free of CeO2. Also it contains 0.01 to 0.05 wt. % of Fe2O3 and 0.05 to 0.8 wt. % of TiO2. This borosilicate glass is especially advantageous for production of flash tubes, gas discharge lamps, and fluorescent tubes for brake lights and display backlights.Type: GrantFiled: February 20, 2002Date of Patent: May 15, 2007Assignee: Schott AGInventors: Karin Naumann, Simone Ritter, Franz Ott, Herbert Stappen
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Patent number: 7211957Abstract: An alumino earth-alkali silicate glass for lamp bulbs of tungsten halogen incandescent lamps has the following glass composition (% by weight) that reduces discoloration during operation of the lamp bulb: SiO2 55.0–62.5?? Al2O3 14.5–18.5?? B2O3 0.8–4.0?? BaO 7.5–17.0? CaO 6.5–13.5? MgO 1.0–5.5?? SrO 0–2.0 ZrO2 0–1.5 TiO2 0–1.0 ZnO 0–0.5 CeO2 0–0.3 R2O <0.03 H2O 0.025–0.042.Type: GrantFiled: December 29, 2004Date of Patent: May 1, 2007Assignee: Telux-Spezialglas GmbHInventors: Hannelore Bergmann, Hans-Jurgen Bergmann
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Patent number: 7202188Abstract: A lead- and barium-free crystal glass having a refractive index of at least 1.55, with in % by weight, more than 50% and less than 60% SiO2, more than 0.6% and less than 4% B2O3, less than 3% K2O, more than 12% and less than 15% Na2O, more than 4% and less than 11% CaO, more than 0.25% and less than 5% Al2O3, less than 2% MgO, and between 8 and 16% ZnO, with the proviso that the total content of the oxides of Pb, Ba and As is below 0.1%, the total content of the oxides of Ti and La is below 5% and the total content of the oxides of Nb, Ta, Yb, Y, W, Bi and Zr is below 5%, wherein at most 1% oxides of Nb, Ta and Yb respectively and 3% of the oxides of Y, W, Bi and Zr respectively are included.Type: GrantFiled: September 18, 2006Date of Patent: April 10, 2007Assignee: D. Swarovski & Co.Inventors: Gerold Sprachmann, Johannes Maier
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Patent number: 7199066Abstract: The present invention relates to glass, glass-ceramic materials, lamp reflectors and processes for making them. The glass material has a composition, by weight of the total composition, comprising 56–67% SiO2; 9–22% Al2O3; 3.4–3.8% Li2O; 1.8–2.6% ZnO; 1.5–2.5% MgO; 3.3–5% TiO2; 0–2.5% ZrO2; 1.5–3% B2O3; 0–6% P2O5; 0–0.6% F; less than 500 ppm Fe; and components resulting from effective amount of at least one refining agent. The glass-ceramic material of the present invention contains ?-spodumene solid solution as the predominant crystalline phase, and can be obtained by proper thermal treatment of the glass-ceramic material.Type: GrantFiled: November 21, 2005Date of Patent: April 3, 2007Assignee: Corning IncorporatedInventors: William E. Horsfall, Ronald L. Stewart
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Patent number: 7192898Abstract: A glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD or of an optical communication device, and a glass composition for making such a glass substrate, contains the following glass ingredients: 45 to 75% by weight of SiO2; 1 to 20% by weight of Al2O3; 0 to 8% by weight, zero inclusive, of B2O3; SiO2+Al2O3+B2O3 accounting for 60 to 90% by weight; a total of 0 to 20% by weight, zero inclusive, of R2O compounds, where R=Li, Na, and K; and a total of 0 to 15% by weight, zero inclusive, of TiO2+ZrO2+LnxOy, where LnxOy represents at least one compound selected from the group consisting of lanthanoid metal oxides, Y2O3, Nb2O5, and Ta2O5.Type: GrantFiled: August 4, 2003Date of Patent: March 20, 2007Assignee: Minolta Co., Ltd.Inventors: Toshiharu Mori, Hideki Kawai
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Patent number: 7166549Abstract: The invention relates to an antimicrobial, anti-inflammatory and disinfecting glass, whereby the glass comprises: 30–95 wt. % SiO2,0–40 wt. % Na 2O, 0–40 wt. % K2O, 0–40 wt. % Li2O, 0–35 wt. % CaO, 0–10 wt. % MgO, 0–10 wt. % Al2O3, 0–15 wt. % P2O5 wt. % B2O3?, 0–10 wt. % NaF, 0–10 wt. % LiF, 0–10 wt. % KF, 0–10 wt. % CaF2, 0–5 wt. % Ag2O, 0–10 wt. % MgF2,0–2 wt. % Fe2O3and 0–10 wt. % XJy, where X?Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, Ag or Zn and y=1 or y=2 and the sum of XJy> is 10 ppm.Type: GrantFiled: August 17, 2002Date of Patent: January 23, 2007Assignee: Schott AGInventors: Jorg Hinrich Fechner, José Zimmer
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Patent number: 7157392Abstract: An alkali-free aluminoborosilicate glass having a coefficient of thermal expansion ?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: GrantFiled: May 10, 2004Date of Patent: January 2, 2007Assignee: Schott GlasInventors: Ulrich Peuchert, Peter Brix
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Patent number: 7153797Abstract: 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: June 1, 2004Date of Patent: December 26, 2006Assignee: Schott GlasInventor: Ulrich Peuchert