Patents Examined by Elizabeth A. Bolden
  • Patent number: 10597322
    Abstract: The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol. % to about 80 mol. % SiO2; from about 3 mol. % to about 13 mol. % alkaline earth oxide; X mol. % Al2O3; and Y mol. % alkali oxide. The alkali oxide may include Na2O in an amount greater than about 8 mol. %. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed from the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: March 24, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Paul Stephen Danielson, Steven Edward DeMartino, Melinda Ann Drake, Robert Michael Morena, Santona Pal, Robert Anthony Schaut
  • Patent number: 10590027
    Abstract: Provided are a high performance glass fiber composition, and a glass fiber and a composite material thereof. The content, given in weight percentage, of each component of the glass fiber composition is as follows: 52-67% of SiO2, 12-24% of Al2O3, 0.05-4.5% of Sm2O3+Gd2O3, less than 2% of Li2O+Na2O+K2O, 10-24% of CaO+MgO+SrO, less than 16% of CaO, less than 13% of MgO, less than 3% of TiO2, and less than 1.5% of Fe2O3. The composition significantly improves the mechanical properties and the thermal stability of glass, significantly reduces the liquidus temperature and forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate of glass. The composition is particularly suitable for the tank furnace production of a high performance glass fiber having excellent thermal stability.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 17, 2020
    Assignee: JUSHI GROUP CO., LTD.
    Inventors: Yuqiang Zhang, Guorong Cao, Lin Zhang, Wenzhong Xing, Guijiang Gu
  • Patent number: 10577275
    Abstract: The invention relates to a glass sheet having high transmission of infrared (IR) radiation. More specifically, the invention relates to a glass sheet having a composition which comprises, in a content expressed as percentages by total weight of glass: SiO2 55-85% AI2O3 0-30% B2O3 0-20% Na2O 0-25% CaO 0-20% MgO 0-15% K2O 0-20% BaO 0-20% total iron (expressed in the form of Fe2O3) 0.002-1%, Cr2O3 0.001-0.5% Co 0.0001-0.5% Se 0.0003-0.5%. By virtue of its high transmission of IR radiation, said glass sheet can advantageously be used in a device using a technology requiring very good transmission of IR radiation, whether through the main faces or starting from their edge (for example, a screen or panel or pad) The invention thus also relates to the use of such a glass sheet in a device using infrared radiation propagating essentially inside said sheet.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: March 3, 2020
    Assignee: AGC GLASS EUROPE
    Inventors: Thomas Lambricht, Audrey Dogimont, Aline Degand
  • Patent number: 10577276
    Abstract: The purpose of the present invention is to provide an ultraviolet-absorbent glass that is suitable as a dark gray glass, that has a very low ultraviolet transmittance (TUV), and that has excellent color rendering properties for green. The present invention relates to an ultraviolet-absorbent glass in which: the ultraviolet transmittance (TUV) as defined in ISO 9050:2003 is 2% or less for a thickness of 2.8 mm; the visible light transmittance (TVA) based on a standard A light source is 10% to 30% inclusive for a thickness of 2.8 mm; the energy transmittance (TE) as defined in JIS R 3106:1998 is 30% or less for a thickness of 2.8 mm; a ratio R14/R9 for color rendering indices as defined in ISO 9050:1990 and JIS Z 8726:1990 is 1.8 or greater; and a ratio R14/R1 is 1.05 or greater.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: March 3, 2020
    Assignee: AGC INC.
    Inventors: Shuichi Akada, Soshi Watanabe
  • Patent number: 10577274
    Abstract: According to one embodiment, a glass composition may include from 67 mol. % to about 75 mol. % SiO2; from about 6 mol. % to about 10 mol. % Al2O3; and from about 5 mol. % to about 12 mol. % alkali oxide. The alkali oxide may include K2O in an amount less than or equal to 0.5 mol. %. The glass composition may further include from about 9 mol. % to about 15 mol. % of alkaline earth oxide. The alkaline earth oxide may include greater than about 0 mol. % and less than or equal to 3 mol. % MgO, from 2 mol. % to about 7 mol % CaO, at least one of SrO and BaO. The glass composition may further include less than 1 mol. % B2O3. A ratio of a concentration of MgO to the sum of the concentration of divalent cations (MgO:?RO) may be less than 0.3.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: March 3, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Melinda Ann Drake, Robert Michael Morena
  • Patent number: 10570053
    Abstract: An ion exchangeable glass having a high degree of resistance to damage caused by abrasion, scratching, indentation, and the like. The glass comprises alumina, B2O3, and alkali metal oxides, and contains boron cations having three-fold coordination. The glass, when ion exchanged, has a Vickers crack initiation threshold of at least 10 kilogram force (kgf).
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: February 25, 2020
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Adam James Ellison, John Christopher Mauro
  • Patent number: 10562806
    Abstract: Alkali aluminosilicate glasses that are resistant to damage due to sharp impact and capable of fast ion exchange are provided. The glasses comprise at least 4 mol % P2O5 and, when ion exchanged, have a Vickers indentation crack initiation load of at least about 7 kgf.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: February 18, 2020
    Assignee: CORNING INCORPORATED
    Inventor: Timothy Michael Gross
  • Patent number: 10562810
    Abstract: Glass compositions and glass fibers having low dielectric constants and low dissipation factors that may be suitable for use in electronic applications and articles are disclosed. The glass fibers and compositions of the present invention may include between 45.0 to 58.0 weight percent SiO2; greater than 18.0 weight percent B2O3 and no more than 26.0 weight percent B2O3; greater than 16.0 weight percent Al2O3 and no more than 23.0 weight percent Al2O3; between 0.25 to 12.0 weight percent P2O5; greater than 0.25 weight percent CaO and less than 5.00 weight percent CaO; less than 4.50 weight percent MgO; greater than 0.25 weight percent CaO+MgO and less than 5.00 weight percent CaO+MgO; less than 0.80 weight percent Fe2O3; and less than 0.50 weight percent TiO2. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: February 18, 2020
    Assignee: AGY Holding Corporation
    Inventors: Robert Lurie Hausrath, Anthony Vincent Longobardo, Brian Gene Ruppel
  • Patent number: 10550029
    Abstract: Glasses that undergo rapid ion exchange. The glasses comprise SiO2, Al2O3, P2O5, Na2O, K2O, and, in some embodiments, at least one of MgO and ZnO. The glass may, for example, be ion exchanged in a molten KNO3 salt bath in less than 1 hour at temperatures in a range from about 370° C. to about 390° C. to achieve a depth of surface compressive layer of greater than about 45 microns, or in a range from about 0.05t to about 0.22t, where t is the thickness of the glass. The glasses are fusion formable and, in some embodiments, compatible with zircon.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: February 4, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Timothy Michael Gross, Xiaoju Guo
  • Patent number: 10526537
    Abstract: A glass having from greater than or equal to about 0.1 mol. % to less than or equal to about 20 mol. % Ho2O3, and one or more chromophores selected from V, Cr, Mn, Fe, Co, Ni, Se, Pr, Nd, Er, Yb, and combinations thereof. The amount of Ho2O3 (mol. %) is greater than or equal to 0.7 (CeO2 (mol. %)+Pr2O3 (mol. %)+Er2O3 (mol. %)). The glass can include one or more fluorescent ions selected from Cu, Sn, Ce, Eu, Tb, Tm, and combinations thereof in addition to, or in place of the chromophores. The glass can also include multiple fluorescent ions.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: January 7, 2020
    Assignee: Corning Incorporated
    Inventors: Matthew John Dejneka, Timothy James Kiczenski
  • Patent number: 10501365
    Abstract: Embodiments are directed to glass articles which are resistant to UV photodarkening, the glass articles having a thickness ?1.3 mm and comprise UV absorbers such as Ti, V, Mn, Fe, Cu, Ce, Ge, Mo, Cr, Co and Ni, and combinations thereof, or alternatively comprising ZnO or SnO2.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: December 10, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Dana Craig Bookbinder, Nicholas Francis Borrelli, Matthew John Dejneka, Timothy Michael Gross, Xiaoju Guo, Ronald Leroy Stewart
  • Patent number: 10494294
    Abstract: The invention provides a high-refraction low-dispersion optical glass with refractive index of 1.76-1.80 and Abbe number of 47-51. The optical glass, comprising the following components by weight percentage: 0-3% of SiO2; 25-40% of B2O3; 20-40% of La2O3; 12-25% of Gd2O3; 6.5-15% of ZrO2; greater than 10% but less than or equal to 20% of ZnO; 0-5% of Ta2O5; 0-5% of Nb2O5; 0-10% of Li2O; less than 0.45 of (Ta2O5+Nb2O5)/(ZnO+Li2O); 0-10% of Y2O3; and below 625° C. of glass transition temperature Tg. With reasonable component ratio, the high-refraction low-dispersion optical glass favorable to precision molding with excellent transmittance can be easily enabled while realizing the required optical constant of the glass of the present invention.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: December 3, 2019
    Assignee: CDGM Glass Co., Ltd.
    Inventor: Bo Kuang
  • Patent number: 10494296
    Abstract: Provided is a glass composition having an infrared absorbing function, water resistance, heat resistance, and a low expansion coefficient, the glass composition including the following components (a) to (c): (a) 0.1 wt % or more to 14.0 wt % or less of an intermediate oxide; (b) 0.1 wt % or more to 14.0 wt % or less of CuO; and (c) 80.0 wt % or more to 99.8 wt % or less of silica, in which a total of a content ratio of the intermediate oxide and a content ratio of the CuO is from 0.2 wt % or more to 20 wt % or less.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: December 3, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Zuyi Zhang, Yoshinori Kotani, Naoyuki Koketsu
  • Patent number: 10487007
    Abstract: Some embodiments of the present invention provide fiberizable glass compositions formed from batch compositions comprising amounts of one or more glassy minerals, including perlite and/or pumice. Some embodiments of the present invention related to glass fibers formed from such batch compositions, and composites and other materials incorporating such glass fibers.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: November 26, 2019
    Inventors: Hong Li, James C. Watson
  • Patent number: 10487004
    Abstract: The invention provides a high-refraction low-dispersion optical glass with refractive index of 1.76-1.80 and Abbe number of 47-51. The glass has an excellent transmittance when the content of Ta2O5 in glass component is reduced. The optical glass comprises the following components by molar percentage: 40-65% of B2O3; 6-21% of La2O3; 1-15% of Gd2O3; greater than 6.5% but less than or equal to 15% of ZrO2; ad 10-28% of ZnO. According to the present invention, the transmittance of glass becomes excellent without introducing SnO2; the product cost is optimized by reducing the content of Ta2O5; with reasonable component ratio, the high-refraction low-dispersion optical glass in favor of precision molding and with excellent transmittance, as well as the glass preform and optical element made of the optical glass can be easily enabled while the required optical constant of the glass is realized.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: November 26, 2019
    Assignee: CDGM Glass Co., Ltd.
    Inventor: Bo Kuang
  • Patent number: 10479721
    Abstract: New glass compositions and applications thereof are disclosed. A glass composition as described herein can include 50 to 55 weight percent SiO2, 17 to 26 weight percent B2O3, 13 to 19 weight percent Al2O3, 0 to 8.5 weight percent MgO, 0 to 7.5 weight percent ZnO, 0 to 6 weight percent CaO, 0 to 1.5 weight percent Li2O, 0 to 1.5 weight percent F2, 0 to 1 weight percent Na2O, 0 to 1 weight percent Fe2O3, 0 to 1 weight percent TiO2, and 0 to 8 weight percent of other constituents. Also described herein are glass fibers formed from such compositions, composites, and articles of manufacture comprising the glass compositions and/or glass fibers.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: November 19, 2019
    Inventor: Hong Li
  • Patent number: 10472272
    Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2O, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(?941)+Li2O×927+Na2O×47.5+K2O×(?371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: November 12, 2019
    Assignee: AGC Inc.
    Inventors: Suguru Murayama, Seiki Ohara, Qing Li, Shusaku Akiba
  • Patent number: 10464839
    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: October 12, 2017
    Date of Patent: November 5, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Matthew John Dejneka, Adam James Ellison, Sinue Gomez, Robert Michael Morena
  • Patent number: 10457585
    Abstract: The invention relates to a glass sheet having a boron- and lithium-free glass composition comprising the following in weight percentage, expressed with respect to the total weight of glass: 65?SiO2?78% 5?Na2O?20% 0?K2O?5% 3<Al2O3?5% 0<CaO<4.5% 5?MgO?12%; and comprising the following: 0.88?[MgO/(MgO+CaO)]<1. The invention corresponds to an easy chemically-temperable soda-silica type glass composition, which is more suited for mass production than aluminosilicate glass, and therefore is available at low cost, and with a base glass/matrix composition that is close to or very similar to compositions already used in existing mass production.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: October 29, 2019
    Assignee: AGC GLASS EUROPE
    Inventor: Thomas Lambricht
  • Patent number: 10450217
    Abstract: A glass for pharmaceutical containers, which is resistant to delamination and has excellent processibility, is provided. The glass for pharmaceutical containers comprises, in mol % on an oxide basis, 69 to 81% of SiO2, 4 to 12% of Al2O3, 0 to 5% of B2O3, to 20% of Li2O+Na2O+K2O, 0.1 to 12% of Li2O, and 0 to 10% of MgO+CaO+SrO+BaO. The glass has a hydrolytic resistance of Class 1 in a test in accordance with the European pharmacopoeia.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: October 22, 2019
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kazuyuki Yamamoto, Ken Choju