And Divalent Metal Oxide (e.g., Oxides Of Zinc, Cadmium, Beryllium, Alkaline Earth Metal, Magnesium, Etc.) Patents (Class 501/69)
  • Patent number: 10470854
    Abstract: Pre-sintered blanks based on lithium disilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 12, 2019
    Assignee: Ivoclar Vivadent AG
    Inventors: Harald Bürke, Christian Ritzberger, Marcel Schweiger, Volker Rheinberger
  • Patent number: 10082616
    Abstract: To provide a glass plate excellent in the internal transmittance of light rays in the visible region. A glass plate consisting of multicomponent oxide glass, which has an effective optical path length of from 25 to 200 cm, a thickness of from 0.5 to 10 mm, and an average internal transmittance in the visible region of at least 80% and a chromaticity Y of tristimulus values in the XYZ colorimetric system as defined in JIS Z8701 (Appendix) of at least 90%, under the effective optical path length.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: September 25, 2018
    Assignee: AGC Inc.
    Inventors: Hiroyuki Hijiya, Yusuke Arai, Yutaka Kuroiwa, Tetsuya Nakashima, Yuki Kondo
  • Patent number: 10029939
    Abstract: Methods for making a ceramic or glass-ceramic include spray-drying a mixture comprising batch materials to form agglomerated particles; bringing the agglomerated particles into contact with a plasma for a residence time sufficient to form fused particles; and annealing the fused particles at a temperature and for a time sufficient to form ceramic or glass-ceramic particles. The methods can be used to produce fused glass particles, ceramic or glass-ceramic particles, and ceramic or glass-ceramic articles, such as ceramic honeycombs.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 24, 2018
    Assignee: Corning Incorporated
    Inventors: Monika Backhaus-Ricoult, Daniel Robert Boughton, Jennifer Anella Heine
  • Patent number: 10026651
    Abstract: A method of making a substrate involves patterning the substrate into active areas and dicing lanes. After the substrate is patterned one or more stress layers are formed the substrate. A change in stress along a thickness of the substrate in the active areas is larger than a change in stress along the thickness of the substrate in the dicing lanes. The substrate is subsequently diced along the dicing lanes.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: July 17, 2018
    Assignee: Palo Alto Research Center Incorporated
    Inventor: Scott J. Limb
  • Patent number: 9745218
    Abstract: The present invention relates to a method of fabricating an improved lithium silicate glass ceramic and to that material for the manufacture of blocks for dental appliances using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 800° C. indicating that the samples will support the temperature process without shape deformation.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 29, 2017
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventor: Rodolfo Castillo
  • Patent number: 9589586
    Abstract: A glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. The glass compositions disclosed comprise oxides of at least Si, Al, Li, Na, K, Sn and Ce, optionally Sb, but not comprising As or F. Additional oxides of Mg, Cs, Sr and Ba may be present. The oxides are presented as molar percentages, mass percentages and ratios thereof.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: March 7, 2017
    Assignee: HOYA CORPORATION
    Inventors: Yoichi Hachitani, Kinobu Osakabe
  • Patent number: 9530910
    Abstract: Sodium containing aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates or superstrates for photovoltaic devices, for example, thin film photovoltaic devices such as CIGS photovoltaic devices. These glasses can be characterized as having strain points ?535° C., for example, ?570° C., thermal expansion coefficients of from 8 to 9 ppm/° C., as well as liquidus viscosities in excess of 50,000 poise. As such they are ideally suited for being formed into sheet by the fusion process.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: December 27, 2016
    Assignee: CORSAM Technologies LLC
    Inventors: Bruce Gardiner Aitken, James Edward Dickinson, Jr., Timothy J. Kiczenski
  • Patent number: 9403715
    Abstract: A glass ceramic precursor glass and a glass ceramic having low levels of rhodium and a method of controlling the amount of rhodium in such glasses and glass ceramics. The precursor glass and glass ceramic contain from about 1 ppm to about 10 ppm and, in certain embodiments, from about 1 ppm to about 6 ppm rhodium. The method of controlling of reducing rhodium dissolution from a rhodium-containing material such as, for example, an alloy into a glass melt comprises controlling and/or lowering the partial pressure of oxygen at the rhodium-containing vessel/glass interface by imposing a high humidity condition around the external (non-glass-contact) surface of the rhodium-containing material. The lower concentration of rhodium minimizes its coloring effect on the white color of the glass ceramic.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: August 2, 2016
    Assignee: CORNING INCORPORATED
    Inventors: Samir Biswas, Qiang Fu, David Myron Lineman, Ronald Leroy Stewart
  • Patent number: 9236077
    Abstract: According to one aspect of the present invention, provided is glass for use in substrate for information recording medium, which comprises, denoted as molar percentages, a total of 70 to 85 percent of SiO2 and Al2O3, where SiO2 content is equal to or greater than 50 percent and Al2O3 content is equal to or greater than 3 percent; a total of equal to or greater than 10 percent of Li2O, Na2O and K2O; a total of 1 to 6 percent of CaO and MgO, where CaO content is greater than MgO content; a total of greater than 0 percent but equal to or lower than 4 percent of ZrO2, HfO2, Nb2O5, Ta2O5, La2O3 Y2O3 and TiO2; with the molar ratio of the total content of Li2O, Na2O and K2O to the total content of SiO2, Al2O3, ZrO2, HfO2, Nb2O5, Ta2O5, La2O3, Y2O3 and TiO2 ((Li2O+Na2O+K2O)/(SiO2+Al2O3+ZrO2+HfO2+Nb2O5+Ta2O5+La2O3+Y2O3+TiO2)) being equal to or less than 0.28.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: January 12, 2016
    Assignee: HOYA CORPORATION
    Inventors: Kazuo Tachiwana, Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi, Kinobu Osakabe
  • Patent number: 9145331
    Abstract: A crystallizable glass composition containing, in % by mole in glass component composition, 40 to 70% SiO2, 5 to 35% MgO, 5 to 35% BaO, 5 to 35% ZnO, 0 to 20% CaO, 0 to 20% SrO, 0 to 5% B2O3, 0 to 2% Al2O3, and 0 to 30% La2O3+Y2O3+Gd2O3+Nb2O5+Ta2O5. Provided is a crystallizable glass composition which has fluidity suitable for bonding, has a high coefficient of thermal expansion after undergoing thermal treatment, is less likely to degrade the power generation property of the fuel cell owing to evaporation of glass components even when exposed to high temperatures for a long period, and has excellent thermal resistance after bonding.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: September 29, 2015
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventor: Yoshihisa Takayama
  • Patent number: 9108878
    Abstract: Provided is the plate glass having high annealing temperature, high strength, excellent flatness and low viscosity, and manufacturing process thereof, which can be used for display and photovoltaic solar device. The plate glass contains (in mass %) boron oxide 0-3.9%, sodium oxide 0.01-14%, iron oxide 0.01-5%, fluorine oxide 0%, magnesia 7-22.2%, alumina 0.01-39%, wherein the content of silica is 1.9-4.1 times that of calcium oxide, the content of calcium oxide is 1.0-1.8 times that of magnesia.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: August 18, 2015
    Inventor: Dening Yang
  • Patent number: 9060435
    Abstract: A process for producing a plate glass for a display device having a thickness of at most 1.5 mm by a float process, wherein the plate glass comprises, as represented by mole percentage based on the following oxides, from 67 to 75% of SiO2, from 0 to 4% of Al2O3, from 7 to 15% of Na2O, from 1 to 9% of K2O, from 6 to 14% of MgO and from 0 to 1.5% of ZrO2, has a total content of SiO2 and Al2O3 of from 71 to 75%, has a total content Na2O+K2O of Na2O and K2O of from 12 to 20%, and has a content of CaO of less than 1% if contained.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 16, 2015
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shusaku Akiba, Kazutaka Hayashi
  • Patent number: 9053734
    Abstract: Provided are a glass substrate for information recording media wherein air bubbles can be sufficiently removed, and an information recording medium using the glass substrate. The glass substrate contains 65 to 90 mass % of SiO2+Al2O3+B2O3 (where SiO2 is 45 to 75 mass %, Al2O3 is 1 to 20 mass %, and B2O3 is 0 to 8 mass %), 7 to 20 mass % of R2O (where R represents Li, Na, or K), 0.1 to 12 mass % of R?O (where R? represents Mg, Ca, Sr, Ba, or Zn), and 0.5 to 10 mass % of TiO2+ZrO2. Moreover, the glass substrate contains at least one multivalent element selected from among a group consisting of V, Mn, Ni, Mo, Sn, Ce, and Bi; the molar ratio of the total amount of the oxide of the multivalent element to the total amount of TiO2+ZrO2 is within the range of 0.05 to 0.50.
    Type: Grant
    Filed: September 6, 2010
    Date of Patent: June 9, 2015
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hiroshi Kajita, Hideki Kawai
  • Patent number: 9040177
    Abstract: A dopant host containing, in terms of mole %, 20 to 50% SiO2, 30 to 60% (exclusive of 30%) Al2O3, 10 to 40% B2O3, and 2 to 10% RO, wherein R represents alkaline earth metal, or being a laminate including a boron component volatilization layer containing, in terms of mole %, 30 to 60% SiO2, 10 to 30% Al2O3, 15 to 50% B2O3, and 2 to 10% RO, wherein R represents alkaline earth metal, and a heat resistant layer containing, in terms of mole %, 8 to 30% SiO2, 50 to 85% Al2O3, 5 to 20% B2O3, and 0.5 to 7% RO, wherein R represents alkaline earth metal. A process for producing a boron dopant for a semiconductor including the steps of slurrying a starting material powder containing a boron-containing crystalline glass powder, forming the slurry to prepare a green sheet, and sintering the green sheet.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: May 26, 2015
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Yoshio Umayahara, Ryota Suzuki, Yoshikatsu Nishikawa, Masaru Ikebe, Hiroki Mori, Yoshinori Hasegawa
  • Publication number: 20150140325
    Abstract: Embodiments of glass composition including at least about 65 mol % SiO2, Al2O3 in the range from about 7 mol % to about 11 mol %, Na2O in the range from about 13 mol % to about 16 mol %; and a non-zero amount of one or more alkali earth metal oxides selected from MgO, CaO and ZnO, wherein the sum of the alkali earth metal oxides is up to about 6 mol %, are disclosed. The glass compositions can be processed using fusion forming processes and float forming processes and are ion exchangeable. Glass articles including such glass compositions and methods of forming such glass articles are also disclosed. The glass articles of one or more embodiments exhibit a Vickers indentation crack initiation load of at least 8 kgf.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 21, 2015
    Inventors: Timothy Michael Gross, Xiaoju Guo, Charlene Marie Smith
  • Patent number: 9034469
    Abstract: A tempered glass substrate has a compression stress layer on a surface thereof, and has a glass composition comprising, in terms of mass %, 40 to 70% of SiO2, 12 to 21% of Al2O3, 0 to 3.5% of Li2O, 10 to 20% of Na2O, 0 to 15% of K2O, and 0 to 4.5% of TiO2, wherein the tempered glass substrate has a plate thickness of 1.5 mm or less, and an internal tensile stress in the tempered glass substrate is 15 to 150 MPa.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: May 19, 2015
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Takashi Murata
  • Publication number: 20150132579
    Abstract: Ion exchangeable glasses that comprise at least one of a transition metal oxide or a rare earth oxide and have compositions that simultaneously promote a surface layer having a high compressive stress and deep depth of layer or, alternatively, reduced ion exchange time.
    Type: Application
    Filed: May 28, 2013
    Publication date: May 14, 2015
    Inventors: Xiaoju Guo, John Christopher Mauro, Marcel Potuzak, Morten Mattrup Smedskjaer
  • Patent number: 9028967
    Abstract: The present invention relates to a chemically strengthened glass for a display device, having a visible light transmittance Tva of 50% or more and less than 91% at a thickness of 1 mm using A light source, and an excitation purity Pe of less than 0.5% at a thickness of 1 mm.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: May 12, 2015
    Assignee: Asahi Glass Company, Limited
    Inventors: Akio Koike, Yuya Shimada, Isao Saito
  • Patent number: 9029279
    Abstract: A glass composition including SiO2 in an amount from 74.5 to 80.0% by weight, Al2O3 in an amount from 5.0 to 9.5%>> by weight, MgO in an amount from 8.75 to 14.75% by weight, CaO in an amount from 0.0 to 3.0% by weight, Li2O in an amount from 2.0 to 3.25% by weight, Na2O in an amount from 0.0 to 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades, armor plating, and aerospace structures.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: May 12, 2015
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Douglas Alan Hofmann, Peter Bernard McGinnis
  • Publication number: 20150126354
    Abstract: To provide glass to be used for chemically tempered glass, of which the strength is less likely to be reduced even when indentations are formed thereon. Glass for chemical tempering, which comprises, as represented by mole percentage based on oxides, from 62 to 68% of SiO2, from 6 to 12% of Al2O3, from 7 to 13% of MgO, from 9 to 17% of Na2O, and from 0 to 7% of K2O, wherein the difference obtained by subtracting the content of Al2O3 from the total content of Na2O and K2O is less than 10%, and when ZrO2 is contained, its content is at most 0.8%. Chemically tempered glass obtained by chemically tempering such glass for chemical tempering. Such chemically tempered glass has a compressive stress layer formed on the glass surface, which has a thickness of at least 30 ?m and a surface compressive stress of at least 550 MPa.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Jun ENDO, Shusaku AKIBA, Kazutaka ONO, Tetsuya NAKASHIMA
  • Patent number: 9016092
    Abstract: A glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. The glass is an oxide glass not including As or F.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: April 28, 2015
    Assignee: Hoya Corporation
    Inventors: Yoichi Hachitani, Kinobu Osakabe
  • Publication number: 20150093581
    Abstract: An object is to devise a tempered glass substrate that has high mechanical strength and hardly undergoes breakage even though having a large size. A tempered glass substrate has a compressive stress layer in a surface thereof, and includes 1 piece/cm3 or less of devitrified stones containing Zr.
    Type: Application
    Filed: December 4, 2014
    Publication date: April 2, 2015
    Inventors: Takashi MURATA, Takako TOJYO, Motokazu OGATA
  • Patent number: 8993465
    Abstract: Described herein are alkali-free, boroalumino silicate glasses exhibiting desirable physical and chemical properties for use as substrates in flat panel display devices, such as, active matrix liquid crystal displays (AMLCDs) and active matrix organic light emitting diode displays (AMOLEDs). In accordance with certain of its aspects, the glasses possess good dimensional stability as a function of temperature. The glasses comprise in mol percent on an oxide basis: 70-74.5 SiO2, 10.5-13.5 AL2O3, 0-2.5 B2O3, 3-7 MgO, 3-7 CaO, 0-4 SrO, 1.5-6 BaO, 0-0.3 SnO2, 0-03 CeO2, 0-0.5 As2O3, 0-0.5 Sb2O3, 0.01-0.08 Fe2O3 and F+Cl+BrRO/Al2O31.7 and 0.2MgO/RO0.45, RO being the sum of MgO, BaO, SrO and CaO.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: March 31, 2015
    Assignee: Corning Incorporated
    Inventors: Adam J. Ellison, Timothy J. Kiczenski
  • Publication number: 20150074974
    Abstract: Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack formation from Vickers indentation than glasses with the same compressive stress, but higher depths of layer.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 19, 2015
    Inventors: Jonathan David Pesansky, Chandan Kumar Saha, Trevor E. Wilantewicz
  • Patent number: 8969226
    Abstract: A silicate glass that is tough and scratch resistant. The toughness is increased by minimizing the number of non-bridging oxygen atoms in the glass. In one embodiment, the silicate glass is an aluminoborosilicate glass in which ?15 mol %?(R2O+R?O—Al2O3—ZrO2)—B2O3?4 mol %, where R is one of Li, Na, K, Rb, and Cs, and R? is one of Mg, Ca, Sr, and Ba.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: March 3, 2015
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez, Robert Michael Morena
  • Publication number: 20150051061
    Abstract: Intermediate to high CTE glass compositions and laminates formed from the same are described. The glasses described herein have properties, such as liquidus viscosity or liquidus temperature, which make them particularly well suited for use in fusion forming processes, such as the fusion down draw process and/or the fusion lamination process. Further, the glass composition may be used in a laminated glass article, such as a laminated glass article formed by a fusion laminate process, to provide strengthened laminates via clad compression as a result of CTE mismatch between the core glass and clad glass.
    Type: Application
    Filed: August 13, 2014
    Publication date: February 19, 2015
    Inventors: Timothy James Kiczenski, John Christopher Mauro, Michelle Diane Pierson-Stull, Robert Anthony Schaut, Natesan Venkataraman
  • Publication number: 20150038315
    Abstract: To provide a method for producing chemically tempered glass, whereby frequency of replacement of the molten salt can be reduced. A method for producing chemically tempered glass, which comprises repeating ion exchange treatment of immersing glass in a molten salt, wherein the glass comprises, as represented by mole percentage, from 61 to 77% of SiO2, from 1 to 18% of Al2O3, from 3 to 15% of MgO, from 0 to 5% of CaO, from 0 to 4% of ZrO2, from 8 to 18% of Na2O and from 0 to 6% of K2O; SiO2+Al2O3 is from 65 to 85%; MgO+CaO is from 3 to 15%; and R calculated by the following formula by using contents of the respective components, is at least 0.66: R=0.029×SiO2+0.021×Al2O3+0.016×MgO?0.004×CaO+0.016×ZrO2+0.029×Na2O+0×K2O?2.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Jun Endo, Shusaku Akiba, Kazutaka Ono, Shigeki Sawamura
  • Patent number: 8940996
    Abstract: The object of the invention is a substrate for photovoltaic cell comprising at least one sheet of float glass provided on a face of at least one electrode, characterized in that said glass has a chemical composition comprising the following constituents, in a weight content that varies within the limits defined below: SiO2 69-75% Al2O3 ?0-3% CaO + MgO 11-16.2%? MgO ?0-6.5% Na2O 9-12.4%? K2O ?0-1.5%.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: January 27, 2015
    Assignee: Saint-Gobain Glass France
    Inventors: Octavio Cintora, Guillaume Fourty
  • Publication number: 20150024210
    Abstract: A glass that is down-drawable and ion exchangeable. The glass has a temperature T35kp which the viscosity is 35 kilopoise. T35kp is less than the breakdown temperature Tbreakdown of zircon.
    Type: Application
    Filed: August 11, 2014
    Publication date: January 22, 2015
    Inventors: Matthew John Dejneka, Adam James Ellison, Benjamin Zain Hanson
  • Publication number: 20150017412
    Abstract: A tempered glass according to one embodiment of the present invention is a tempered glass having a compression stress layer in a surface thereof, the tempered glass including as a glass composition, in terms of mass %, 45 to 75% of SiO2, 10 to 25% of Al2O3, 0 to 10% of B2O2, 0 to 8% of MgO, 0 to 20% of SrO+BaO, and 0 to 14% of Na2O. Herein, the term “SrO+BaO” refers to the total amount of SrO and BaO.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 15, 2015
    Inventors: Takashi Murata, Takako Tojyo, Masato Muguruma, Kosuke Kawamoto
  • Patent number: 8932969
    Abstract: Provided are: a glass substrate for p-Si TFT flat panel displays that is composed of a glass having high characteristic temperatures in the low-temperature viscosity range, typified by the strain point and glass transition point, having a small heat shrinkage rate, and being capable of avoiding the occurrence of the problem regarding the erosion/wear of a melting tank at the time of melting through direct electrical heating; and a method for manufacturing same. The present glass substrate is composed of a glass comprising 52-78 mass % of SiO2, 3-25 mass % of Al2O3, 3-15 mass % of B2O3, 3-25 mass % of RO, wherein RO is total amount of MgO, CaO, SrO, and BaO, 0.01-1 mass % of Fe2O3, and 0-0.3 mass % of Sb2O3, and substantially not comprising As2O3, the glass having a mass ratio (SiO2+Al2O3)/B2O3 in a range of 7-30 and a mass ratio (SiO2+Al2O3)/RO equal to or greater than 6.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 13, 2015
    Assignee: AvanStrate Inc.
    Inventors: Akihiro Koyama, Satoshi Ami, Manabu Ichikawa
  • Patent number: 8921245
    Abstract: The present invention provides a glass substrate having high glass transition temperature and small compaction (C) in a heat treatment at a low temperature (150 to 300° C.), the glass substrate including SiO2, Al2O3, B2O3, MgO, CaO, SrO, BaO, ZrO2, Na2O, K2O, and Li2O, wherein each amount of these compounds is specifically limited, Al2O3+K2O is 7 to 27 mass %, Na2O+K2O is 11.5 to 22 mass %, MgO+CaO+SrO+BaO is 0.2 to 14 mass %, MgO+0.357Al2O3?0.239K2O?5.58 is ?3.0 to 1.5, Na2O+0.272Al2O3+0.876K2O?16.77 is ?2.5 to 2.5, a glass transition temperature is 500° C. or higher, and an average thermal expansion coefficient at 50 to 350° C. is 100×10?7/° C. or less.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: December 30, 2014
    Assignee: Asahi Glass Company, Limited
    Inventor: Manabu Nishizawa
  • Publication number: 20140364298
    Abstract: A Glass for chemical tempering, which includes, as represented by mole percentage based on the following oxides, from 60 to 75% of SiO2, from 5 to 15% of Al2O3, more than 7 and at most 12% of MgO, from 0 to 3% of CaO, from 0 to 3% of ZrO2, from 10 to 20% of Li2O, from 0 to 8% of Na2O and from 0 to 5% of K2O, and has a total content R2O of Li2O, Na2O and K2O of at most 25%, and a ratio Li2O/R2O of the Li2O content to R2O of from 0.5 to 1.0.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 11, 2014
    Applicant: Asahi Glass Company, Limited
    Inventors: Seiki OHARA, Kazutaka ONO, Tetsuya NAKASHIMA
  • Publication number: 20140356609
    Abstract: A method for producing bubble-free glasses is provided, in which a glass mixture that is arsenic-free, antimony-free and tin-free with the exception of any unavoidable raw material impurities and at least one sulfate compound as a refining agent are used. The glass mixture and refining agent are melted and primarily refined in a first region of a melting tank, an average melting temperature (T1) is set at T1>1580° C. and an average melt residence time (t1) is set at t1>2 hours. A secondary refinement is carried out in a second region, an average melting temperature (T2) is set at T2>1660° C. and an average melt residence time (t2) is set at t2>1 hour, and the proportion of the SO3 resulting from decomposition of the sulfate is reduced to less than 0.002 wt. %.
    Type: Application
    Filed: August 20, 2014
    Publication date: December 4, 2014
    Inventors: Frank-Thomas LENTES, Karin NAUMANN, Ulrich SCHIFFNER, Friedrich SIEBERS, Christian MUELLER, Klaus SCHOENBERGER, Evelin WEISS
  • Publication number: 20140356608
    Abstract: A method for producing bubble-free glasses is provided, in which a glass mixture that is arsenic-free and antimony-free with the exception of any unavoidable raw material impurities and a sulfate compound and SnO2 as refining agents are used. The glass mixture is melted and primarily refined in a first region of a melting tank, an average melting temperature (T1) is set at T1>1560° C. and an average melt residence time (t1) is set at t1>2 hours. The proportion of SO3 resulting from the decomposition of the sulfate compound is reduced to less than 0.002 wt. % as the primary refinement is carried out. A secondary refinement is carried out in a second region of the melting tank, an average melting temperature (T2) is set at T2>1640° C. and an average melt residence time (t2) is set at t2>1 hour.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Inventors: Frank-Thomas LENTES, Karin NAUMANN, Ulrich SCHIFFNER, Friedrich SIEBERS, Christian MUELLER, Klaus SCHOENBERGER, Evelin WEISS
  • Publication number: 20140356576
    Abstract: Described herein are various glass compositions, glass articles, and information storage devices that comprise the glass articles as substrates therefor, along with methods for their manufacture and use.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 4, 2014
    Inventors: Matthew John Dejneka, John Christopher Mauro, Morten Mattrup Smedskjaer
  • Patent number: 8895463
    Abstract: A glass substrate for a CIGS solar cell, having high cell efficiency and high glass transition temperature is provided. The glass substrate for a vapor-deposited CIGS film solar cell has a glass transition temperature of at least 580° C. and an average thermal expansion coefficient of from 70×10?7 to 100×10?7/° C., wherein the ratio of the average total amount of Ca, Sr and Ba within from 10 to 40 nm in depth from the surface of the glass substrate to the total amount of Ca, Sr and Ba at 5,000 nm in depth from the surface of the glass substrate is at most 0.35, and the ratio of the average Na amount within from 10 to 40 nm in depth from the surface of the glass substrate after heat treatment to such average Na amount before the heat treatment is at least 1.5.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: November 25, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Yutaka Kuroiwa, Yuichi Yamamoto, Tomomi Abe, Tetsuya Nakashima, Yasushi Kawamoto, Shigeru Niki, Shogo Ishizuka
  • Patent number: 8895461
    Abstract: Provided are: a glass substrate for p-Si TFT flat panel displays that is composed of a glass having high characteristic temperatures in the low-temperature viscosity range, typified by the strain point and glass transition point, having a small heat shrinkage rate, and being capable of avoiding the occurrence of the problem regarding the erosion/wear of a melting tank at the time of melting through direct electrical heating; and a method for manufacturing same. The present glass substrate is composed of a glass comprising 52-78 mass % of SiO2, 3-25 mass % of Al2O3, 3-15 mass % of B2O3, 3-25 mass % of RO, wherein RO is total amount of MgO, CaO, SrO, and BaO, 0.01-1 mass % of Fe2O3, and 0-0.3 mass % of Sb2O3, and substantially not comprising As2O3, the glass having a mass ratio (SiO2+Al2O3)/B2O3 in a range of 7-30 and a mass ratio (SiO2+Al2O3)/RO equal to or greater than 6.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: November 25, 2014
    Assignee: AvanStrate Inc.
    Inventors: Akihiro Koyama, Satoshi Ami, Manabu Ichikawa
  • Publication number: 20140323286
    Abstract: Fusion-formable sodium-containing aluminosilicate and boroaluminosilicate glasses are described. The glasses are particularly useful for controlled release of sodium—useful in semiconductor applications, such as thin film photovoltaics where the sodium required to optimize cell efficiency is to be derived from the substrate glass.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: CORNING INCORPORATED
    Inventors: Bruce Gardiner Aitken, Adam James Ellison, James Patrick Hamilton, Timothy James Kiczenski
  • Patent number: 8859079
    Abstract: A glass having excellent resistance against surface damages is provided. The glass includes a content of alkaline earth oxides of at least 0.3% by weight and of P2O5 of 0.1 to 4% by weight; the glass has at least one surface that has precipitations with a mean size of 1 to 20 ?m. A method is further provided and includes melting a glass batch, yielding a glass melt, and casting the glass melt onto a float bath. The glass melt is maintained on the float bath at a temperature of above 1000° C. for at least 5 minutes, and yields glass. The glass has a content of alkaline earth oxides of at least 0.3% by weight and of P2O5 of 0.1 to 4% by weight, and the glass has at least one surface that has precipitations with a mean size of 1 to 20 ?m.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: October 14, 2014
    Assignee: Schott AG
    Inventors: Friedrich Siebers, Bernd Ruedinger, Andreas Langsdorf, Markus Heiss
  • Patent number: 8853113
    Abstract: A flat panel display glass substrate according to the present invention includes a glass comprising, as expressed in mol %, 55-80% SiO2, 3-20% Al2O3, 3-15% B2O3, 3-25% RO (the total amount of MgO, CaO, SrO, and BaO), and substantially no As2O3 and Sb2O3. The devitrification temperature of the glass is 1250° C. or less. The glass substrate has a heat shrinkage rate of 75 ppm or less. The heat shrinkage rate is calculated from the amount of shrinkage of the glass substrate measured after a heat treatment which is performed at a temperature rising and falling rate of 10° C./min and at 550° C. for 2 hours by the heat shrinkage rate (ppm)={the amount of shrinkage of the glass substrate after the heat treatment/the length of the glass substrate before the heat treatment}×106.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: October 7, 2014
    Assignee: AvanStrate Inc.
    Inventors: Akihiro Koyama, Satoshi Ami, Manabu Ichikawa
  • Patent number: 8846218
    Abstract: A method of smoothing the surface of a ceramic matrix composite material part that presents a surface that is undulating and rough. The method includes depositing a refractory vitreous coating on the surface of the part, the vitreous coating essentially containing silica, alumina, baryte, and lime.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: September 30, 2014
    Assignees: Herakles, SNECMA
    Inventors: Eric Bouillon, Nicolas Eberling-Fux, Serge Chateigner
  • Patent number: 8828898
    Abstract: A glass plate made of soda lime silica glass containing at least MgO, CaO, Na2O and Al2O3 produced by a float process or a downdraw method, wherein [MgO] is at least 4.5%, [MgO]/[CaO] is larger than 1, and Q=([MgO]/[CaO])×([CaO]+[Na2O]?[Al2O3]) is at least 20, wherein [MgO] is the content of MgO, [CaO] is the content of CaO, [Na2O] is the content of Na2O, and [Al2O3] is the content of Al2O3 (each being as represented by mass percentage based on oxide) and a process for the glass plate.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 9, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Yusuke Arai, Tomoyuki Kobayashi, Yuki Kondo
  • Publication number: 20140243183
    Abstract: A down-drawable glass ceramic. The glass ceramic has a composition which yields a liquidus viscosity that enables formation of the parent glass by down-draw techniques such as fusion-draw and slot-draw methods. The resulting glass ceramic is white or translucent in appearance with high strength achieved through heat treatment of the fusion-formed glass.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Applicant: Corning Incorporated
    Inventors: George Halsey Beall, Heather Debra Boek, Alexandre Michel Mayolet, Mark Owen Weller
  • Publication number: 20140235425
    Abstract: A glass substrate contains specific contents of SiO2, Al2O3, B2O3, MgO, CaO, SrO, BaO, ZrO2, Na2O, K2O and Li2O. The glass substrate has a glass transition temperature of 580 to 720° C., an average coefficient of thermal expansion at 50 to 350° C. of 65×10?7 to 85×10?7/° C., a compaction (C) of 15 ppm or less, a glass surface devitrification temperature Tc of 900 to 1,300° C., a glass internal devitrification temperature Td of 900 to 1,300° C., a temperature T4 at which a viscosity reaches 104 dPa·s of 1,100 to 1,350° C., a relationship (T4?Tc) of ?50 to 350° C. and a relationship (T4?Td) of ?50 to 350° C.
    Type: Application
    Filed: April 30, 2014
    Publication date: August 21, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventor: Manabu NISHIZAWA
  • Publication number: 20140226090
    Abstract: To provide chemically tempered glass which is less likely to break even if scratched. Chemically tempered glass, which comprises, as represented by mole percentage based on the following oxides, from 56 to 72% of SiO2, from 8 to 20% of Al2O3, from 9 to 25% of Na2O, from 0 to 2% of K2O, and from 0 to 15% of MgO, and which has a surface compressive stress of at least 900 MPa and an internal tensile stress of at most 30 MPa. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 56 to 69% of SiO2, from 8 to 16% of Al2O3, from 9 to 22% of Na2O, from 0 to 1% of K2O, from 5.5 to 14% of MgO, from 0 to 2% of ZrO2, and from 0 to 6% of B2O3.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 14, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shusaku AKIBA, Shigeki SAWAMURA, Suguru MURAYAMA, Hiroyuki OHKAWA, Yusuke KOBAYASHI, Kazutaka ONO, Tetsuya NAKASHIMA
  • Patent number: 8802581
    Abstract: A glass that is down-drawable and ion exchangeable. The glass has a temperature T35kp at which the viscosity is 35 kilopoise. T35kp is less than the breakdown temperature Tbreakdown of zircon.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: August 12, 2014
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Adam James Ellison, Benjamin Zain Hanson
  • Patent number: 8791036
    Abstract: The present invention relates to a glass plate for a substrate contains, as a glass matrix composition, in mol % on the oxide basis, SiO2: 67 to 72, Al2O3: 1 to 7, B2O3: 0 to 4, MgO: 11 to 15, CaO: 0 to 3, SrO: 0 to 3, BaO: 0 to 4, ZrO2: 0 to 4, Na2O: 8 to 15, and K2O: 0 to 7, with SiO2+Al2O3: 71 to 77, MgO+CaO+SrO+BaO: 11 to 17, Na2O+K2O: 8 to 17, and satisfying K2O/(Na2O+K2O)?0.13×(SiO2+Al2O3+0.5B2O3+0.3BaO)?9.4, in which the glass plate has a ?-OH value (mm?1) of 0.05 to 0.5, and a heat shrinkage ratio (C) of 16 ppm or less.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 29, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Tomoyuki Tsujimura, Yuichi Kuroki, Manabu Nishizawa
  • Patent number: 8778075
    Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: July 15, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Publication number: 20140193643
    Abstract: A method of bonding a first substrate to a second substrate includes providing a glass, applying the glass in a layer between the first and second substrates to form an assembly, and heating the assembly to a bonding temperature above a glass transition temperature of the devitrifying glass, selected to cause the glass to bond the first substrate to the second substrate. The devitrifying glass has constituents that include various amounts of group A in a molar concentration of 70-95%, group B in a molar concentration of 5-20%, group C in a molar concentration of 1-20%, group D in a molar concentration of 0-6%; and group E in a molar concentration of 0-10%. The group A, B, C, D and E groups are disclosed herein.
    Type: Application
    Filed: January 4, 2014
    Publication date: July 10, 2014
    Applicant: LILLIPUTIAN SYSTEMS, INC.
    Inventors: Mohammad Masyood Akhtar, Samuel B. Schaevitz, Michael C. Bradford, Zachary Byars, Joseph C. Tucker