Silica Containing Crystalline Phase (e.g., Stuffed Quartz, Crystobalite, Etc.) Patents (Class 501/4)
  • Patent number: 11840475
    Abstract: A glass-ceramic article comprises a petalite crystalline phase and a lithium silicate crystalline phase. The weight percentage of each of the petalite crystalline phase and the lithium silicate crystalline phase in the glass-ceramic article are greater than each of the weight percentages of other crystalline phases present in the glass-ceramic article. The glass-ceramic article has a transmittance color coordinate in the CIELAB color space of: L*=from 20 to 90; a*=from ?20 to 40; and b*=from ?60 to 60 for a CIE illuminant F02 under SCI UVC conditions. In some embodiments, the colorant is selected from the group consisting of TiO2, Fe2O3, NiO, Co3O4, MnO2, Cr2O3, CuO, Au, Ag, and V2O5.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: December 12, 2023
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Qiang Fu, Charlene Marie Smith
  • Patent number: 11724961
    Abstract: A glass-ceramic article comprises: a center-volume composition comprising (on an oxide basis): 55-75 mol % SiO2; 0.2-10 mol % Al2O3; 0-5 mol % B2O3; 15-30 mol % Li2O; 0-2 mol % Na2O; 0-2 mol % K2O; 0-5 mol % MgO; 0-2 mol % ZnO; 0.2-3.0 mol % P2O5; 0.1-10 mol % ZrO2; 0-4 mol % TiO2; and 0-1.0 mol % SnO2. Lithium disilicate and either ?-spodumene or ?-quartz are the two predominant crystalline phases (by weight) of the glass-ceramic article. The glass-ceramic article further comprises tetragonal ZrO2 as a crystalline phase. The composition of the glass-ceramic article from a primary surface into a thickness of the glass-ceramic article can comprise over 10 mol % Na2O (on an oxide basis), with the mole percentage of Na2O decreasing from the primary surface towards the center-volume. The glass-ceramic article exhibits a ring-on-ring load-to-failure of at least 120 kgf, when the thickness of the glass-ceramic article is 0.3 mm to 2.0 mm.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 15, 2023
    Assignee: CORNING INCORPORATED
    Inventors: Carol Ann Click, Qiang Fu, Mathieu Gerard Jacques Hubert, Charlene Marie Smith, Alana Marie Whittier
  • Patent number: 11591427
    Abstract: Dental composite composition including a glass ceramic and a curable organic material is described in which the glass ceramic includes a crystal phase having an average grain size of 50 to 400 nm, and the dental composite composition is provided as a dental prosthetic material exhibiting superior transparency and mechanical properties comparing to conventional composite products containing micro-sized crystal grains and also has excellent aesthetics and processability required for prosthetic materials for same-day dental prosthetic service.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: February 28, 2023
    Assignee: HASS CO., LTD.
    Inventors: Yong Su Kim, Hyung Bong Lim, Kyung Sik Oh, Sung Min Kim, Young Pyo Hong, Joon Hyung Kim, Si Won Son, Yena Kim
  • Patent number: 11505491
    Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of ?-spodumene crystals, petalite crystals, and eucryptite crystals.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: November 22, 2022
    Assignee: AGC INC.
    Inventors: Seiki Ohara, Qing Li, Shusaku Akiba
  • Patent number: 11447414
    Abstract: Provided is a glass for a magnetic recording medium substrate, which is an amorphous oxide glass, in which an SiO2 content ranges from 56 mol % to 80 mol %, an Li2O content ranges from 1 mol % to 10 mol %, a B2O3 content ranges from 0 mol % to 4 mol %, a total content of MgO and CaO (MgO+CaO) ranges from 9 mol % to 40 mol %, and the oxide glass has a specific gravity of 2.75 g/cm3 or less, a glass transition temperature of 650° C. or higher, and a Young's modulus of 90 GPa or more.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: September 20, 2022
    Assignee: HOYA CORPORATION
    Inventors: Koichi Sato, Kazuaki Hashimoto
  • Patent number: 11370693
    Abstract: A glass-ceramic article that includes an article having a glass-ceramic composition, the composition including: SiO2 from about 45% to about 65%, Al2O3 from about 14% to about 28%, TiO2 from about 2% to about 4%, ZrO2 from about 3% to about 4.5%, MgO from about 4.5% to about 12%, and ZnO from about 0.1 to about 4% (by weight of oxide). The article can include a coefficient of thermal expansion (CTE) of about 20×10?7 K?1 to about 160×10?7 K?1, as measured over a temperature range from 25° C. to 300° C.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: June 28, 2022
    Assignee: Corning Incorporated
    Inventors: Marie Jacqueline Monique Comte, Indrajit Dutta, Jian-Zhi Jay Zhang
  • Patent number: 11365148
    Abstract: A glass-ceramic article includes 50 mol. % to 80 mol. % SiO2; 10 mol. % to 25 mol. % Al2O3; 5 mol. % to 20 mol. % MgO; 0 mol. % to 10 mol. % Li2O; and 1 mol. % to 3 mol. % of a nucleating agent. The nucleating agent is selected from the group consisting of ZrO2, TiO2, SnO2, HfO2, Ta2O5, Nb2O5, Y2O3, and combinations thereof. The nucleating agent may comprise greater than or equal to 50% ZrO2 and less than 50% of at least one compound selected from the group consisting of TiO2, SnO2, HfO2, Ta2O5, Nb2O5, Y2O3, and combinations thereof. The glass-ceramic article may have a molar ratio of MgO to Li2O of greater than or equal to 1:1. The glass-ceramic article may satisfy the relationship 0.85?(MgO (mol %)+Li2O (mol %))/Al2O3 (mol %)?1.2. The glass-ceramic article may comprise a crystalline phase comprising hexagonal stuffed ?-quartz and glass.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: June 21, 2022
    Assignee: CORNING INCORPORATED
    Inventors: George Halsey Beall, John Philip Finkeldey
  • Patent number: 11359097
    Abstract: A coating for protecting a substrate from corrosion includes a first layer having a first composition applied on the substrate. The coating has a thickness of at least 0.5 ?m. The first composition includes an intercalated mixture of a polymer and a clay according to a formula of (Px/C1-x)v, where v comprises a volume of the intercalated mixture applied to the substrate.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 14, 2022
    Assignee: The Texas A&M University System
    Inventors: Jodie L. Lutkenhaus, Pilar C. Suarez-Martinez, Robert C. Nahas, Jerome R. Robinson
  • Patent number: 11332404
    Abstract: The present invention discloses a microcrystalline glass, a microcrystalline glass product, and a manufacturing method therefor. The main crystal phase of the microcrystalline glass comprises lithium silicate and a quartz crystal phase. The haze of the microcrystalline glass of the thickness of 0.55 mm is below 0.6%. The microcrystalline glass comprises the following components in percentage by weight: SiO2: 65-85%; Al2O3: 1-15%; Li2O: 5-15%; ZrO2: 0.1-10%; P2O5: 0.1-10%; K2O: 0-10%; MgO: 0-10%; ZnO: 0-10%. A four-point bending strength of the microcrystalline glass product is more than 600 Mpa.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 17, 2022
    Assignee: CDGM GLASS CO., LTD
    Inventors: Tianlai Yu, Baoping Yuan, Zhenyu Liu
  • Patent number: 11312652
    Abstract: Transparent, dyed cook top or hob with improved color display capability, consisting of a glass ceramic with high quartz mixed crystals as predominant crystal phase, whereby the glass-ceramic contains none of the chemical refining agents arsenic oxide and/or antimony, with transmission values of greater than 0.1% in the range of the visible light within the entire wavelength range greater than 450 nm, a light transmission in the visible of 0.8-2.5% and a transmission in the infrared at 1600 nm of 45-85%.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: April 26, 2022
    Assignee: Schott AG
    Inventors: Friedrich Siebers, Ulrich Schiffner, Wolfgang Schmidbauer, Klaus Schoenberger
  • Patent number: 11274058
    Abstract: A crystallized glass that: has a visible light transmittance of at least 85% when the thickness thereof is converted to 0.8 mm; has a haze value of no more than 1.0% when the thickness thereof is converted to 0.8 mm; contains, in terms of mass % on an oxide basis, 58%-70% SiO2, 15%-30% Al2O3, 2%-10% Li2O, 0%-5% Na2O, 0%-2% K2O, 0%-1.8% SrO, 0%-2% BaO, 0.5%-6% SnO2, 0.5%-6% ZrO2, and 0%-6% P2O5; has a total SrO and BaO content of 0.1%-3%; and has a total Na2O and K2O content of 1%-5%.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: March 15, 2022
    Assignee: AGC Inc.
    Inventors: Qing Li, Akio Koike, Kazuki Kanehara
  • Patent number: 11267748
    Abstract: A transparent coloured lithium aluminium silicate glass ceramic and method of producing are provided. The glass ceramic has a brightness Y of 0.1% to 80% at thickness 4 mm. The glass ceramic has a D65 standard illuminant light, after passing through the glass ceramic with thickness 4 mm, with a colour locus in a white region W1 determined by coordinates in a chromaticity diagram CIExyY-2°: White region W1 x y 0.27 0.21 0.22 0.25 0.32 0.37 0.45 0.45 0.47 0.34 0.36 0.29.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: March 8, 2022
    Assignee: SCHOTT AG
    Inventors: Friedrich Siebers, Oliver Hochrein
  • Patent number: 11267228
    Abstract: A glass-based article having an amorphous phase and a crystalline phase, and a first surface and a second surface opposing the first surface thereby defining a thickness (t) of the glass-based article. The glass-based article having a stress profile with a surface compressive stress (CS) and a maximum central tension (CT). The maximum CT is greater than or equal to 50 MPa and less than or equal to 200 MPa and is positioned within the glass-based article at a range from greater than or equal to 0.4·t and less than or equal to 0.6·t. The surface CS is greater than or equal to 200 MPa and less than or equal to 500 MPa, and a depth of compression (DOC) is from greater than or equal to 0.14·t and less than or equal to 0.25·t.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: March 8, 2022
    Assignee: Corning Incorporated
    Inventors: Steven Edward DeMartino, Michelle Dawn Fabian, Jeffrey Todd Kohli, Jennifer Lynn Lyon, Charlene Marie Smith, Zhongzhi Tang
  • Patent number: 11220456
    Abstract: A glass-based article may include from about 45 mol. % to about 80 mol. % SiO2; from about 0 mol. % to about 10 mol. % Na2O; less than about 5 mol. % K2O; a non-zero amount of Al2O; and an amorphous phase and a crystalline phase. The article may further in include a stress profile comprising a surface compressive stress (CS) and a maximum central tension (CT). A ratio of Li2O (mol. %) to R2O (mol. %) in the article is from about 0.5 to about 1, where R2O is the sum of Li2O, Na2O, and K2O in the article. CT may be greater than or equal to about 50 MPa and less than about 100 MPa. CS may be greater than 2.0·CT. A depth of compression (DOC) of the stress profile may be greater than or equal to 0.14·t and less than or equal to 0.25·t, where t is the thickness of the article.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: January 11, 2022
    Assignee: Corning Incorporated
    Inventors: Guangli Hu, Charlene Marie Smith, Zhongzhi Tang, Steven Alvin Tietje
  • Patent number: 11198639
    Abstract: Multicolored glass-based articles and methods of manufacture are disclosed. The method includes forming a glass-based part and exposing a first region to radiation and a second region to radiation such that the first and second regions have different sized metallic nanoparticles, resulting in a multicolored glass article.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: December 14, 2021
    Assignee: Corning Incorporated
    Inventors: Nicholas Francis Borrelli, Matthew Wade Fenton, Timothy James Kiczenski, Michelle Diane Pierson-Stull
  • Patent number: 11161776
    Abstract: A black lithium silicate glass ceramic is provided. The glass ceramic includes lithium silicate as a primary crystal phase and at least one of petalite, ?-quartz, ?-spodumene, cristobalite, and lithium phosphate as a secondary crystal phase. The glass ceramic is characterized by the color coordinates: L*: 20.0 to 40.0, a*: ?1.0 to 1.0, and b*: ?5.0 to 2.0. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: November 2, 2021
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Qiang Fu, Charlene Marie Smith
  • Patent number: 11091388
    Abstract: Glass ceramics having SiO2 as main crystal phase and precursors thereof are described which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: August 17, 2021
    Assignee: Ivoclar Vivadent AG
    Inventors: Markus Rampf, Marc Dittmer, Christian Ritzberger, Marcel Schweiger, Wolfram Höland
  • Patent number: 11051918
    Abstract: Quartz solid solution glass ceramics and precursors thereof are described, which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: July 6, 2021
    Assignee: Ivoclar Vivadent AG
    Inventors: Marc Dittmer, Wolfram Höland, Marcel Schweiger, Christian Rüssel, Sabrina Seidel
  • Patent number: 10961146
    Abstract: The object of the present application is ?-quartz glass-ceramics (having very interesting optical, thermal expansion and feasibility properties), the articles including said glass-ceramics; the precursor glasses of said glass-ceramics, as well as the methods for elaborating said glass-ceramics and said articles. Said glass-ceramics having a composition, free, except for inevitable trace amounts, of arsenic oxide, antimony oxide and rare earth oxide, which contains, expressed in percentages by weight of oxides: 64 to 70% of SiO2, 18 to 24% of Al2O3, 4 to 5% of Li2O, 0 to 0.6% of SnO2, >1.9 to 4% of TiO2, 1 to 2.5% of ZrO2, 0 to 1.5% of MgO, 0 to 3% of ZnO, >0.3 to 1 of CaO, 0 to 3% of BaO, 0 to 3% of SrO, with BaO+SrO?3%, 0 to 1.5% of Na2O, 0 to 2% of K2O, with 0.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 30, 2021
    Assignee: EUROKERA
    Inventors: Estelle Molieres, Marie Jacqueline Monique Comte
  • Patent number: 10865135
    Abstract: The present invention provides a ceramic powder, in which ?-eucryptite or a ?-quartz solid solution is precipitated as a main crystal phase, and which includes TiO2 and/or ZrO2.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 15, 2020
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Masayuki Hirose
  • Patent number: 10858282
    Abstract: Doped, low-temperature co-fired ceramic (LTCC) insulating substrates and related wiring boards and methods of manufacture are disclosed. The doped, LTCC insulating substrate is formed from a baked (e.g., sintered) glass-ceramic aggregate material formed from a glass material, a ceramic filler material, and a composite oxide. The crystallized glass-ceramic aggregate is then doped with Iron and/or Manganese before baking. Iron or Manganese can further reduce dielectric loss and the loss tangent of the LTCC insulating substrate formed from that glass material. The glass material becomes crystallized due to an oxide crystal phase being deposited on the glass material during baking, which reduces the dielectric losses. This may be important for the application use as wiring boards for high radio-frequency (RF) electrical circuits where low dielectric loss and loss tangent is desired to achieve a desired signal transmission delay performance.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: December 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Klaus Dieter Aichholzer, Pavol Dudesek, Pascal Dotta
  • Patent number: 10730787
    Abstract: The present invention relates to a precision component and also to a glass-ceramic which can be used for producing the precision component.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 4, 2020
    Assignee: SCHOTT AG
    Inventors: Ina Mitra, Clemens Kunisch
  • Patent number: 10703671
    Abstract: Photosensitive lithium zinc aluminosilicate glasses that can be selectively irradiated and cerammed to provide patterned regions of glass and lithium-based glass ceramic, and composite glass articles made from such glasses and glass ceramics are provided. Compressive and tensile stress at the interface of the lithium-based glass-ceramic and lithium zinc aluminosilicate glass may be used to frustrate crack propagation in such a composite glass/glass ceramic article. Methods of making composite glass articles comprising such lithium-based glass ceramics and lithium zinc aluminosilicate glasses are also provided.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: July 7, 2020
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Nicholas Francis Borrelli, Joseph Francis Schroeder, III, Thomas Philip Seward, III
  • Patent number: 10626046
    Abstract: A group of glass-ceramic compositions nucleated with ZrO2 and P2O5 can develop a microstructure composed of spherulite grains, which produce a high fracture toughness (about 1.5 MPa·m0.5 or higher). Also, the glass-ceramic articles can be cerammed to have a CTE value of 30×10?7/° C. or lower.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: April 21, 2020
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Qiang Fu
  • Patent number: 10584056
    Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-18 Al2O3; 5-14 Li2O; 2-12 B2O3; and 0.4-2 Fe2O3. Additionally, these glasses and glass-ceramics can exhibit the following criteria: a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO ] [ Al 2 ? O 3 ] between 0.8 to 1.5. The glass-ceramics also exhibit colors at an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance of a* between ?0.5 and 0.5, b* between ?2.5 and +2, and L* between 90 and 93.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 10, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Qiang Fu, Charlene Marie Smith
  • Patent number: 10575371
    Abstract: One subject of the invention is a cooking device comprising internal elements including at least one heating means, control and/or monitoring means and at least one light-emitting device, said internal elements being covered with at least one glass or glass-ceramic plate colored using vanadium oxide, at least one light-emitting device not being of red color seen through said plate, said plate intrinsically having a light transmission ranging from 2.3% to 40% and an optical transmission of at least 0.6% for at least one wavelength within the region ranging from 420 to 480 nm, said cooking device being such that at least one masking means intended to mask at least one part of said internal elements is placed on top of, underneath or within said plate.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 25, 2020
    Assignee: EUROKERA S.N.C.
    Inventors: Albert Di Giovanni, Marie Comte, Edouard Brunet, Isabelle Melscoet-Chauvel
  • Patent number: 10562808
    Abstract: A highly crystalline transparent, translucent or opaque lithium aluminium silicate (LAS) glass-ceramic which has a proportion of residual glass phase of less than 20% by weight and also the use thereof is described.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: February 18, 2020
    Assignee: SCHOTT AG
    Inventors: Friedrich Siebers, Bernd Ruedinger, Falk Gabel, Evelin Weiss
  • Patent number: 10407569
    Abstract: Disclosed are a chloroethylene-based nanocomposite composition comprising a chloroethylene-based resin; a nanoclay comprising a coupling agent bonded thereto; and at least one polymer selected from unsaturated organic acid-based resins or polycarboxylic acid-based resins, and a method of preparing the same.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: September 10, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Seong Yong Ahn, Kun Ji Kim, Se Woong Lee, Kyung Hyun Kim
  • Patent number: 10377661
    Abstract: Glass ceramics having SiO2 as main crystal phase and precursors thereof are described which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 13, 2019
    Assignee: Ivoclar Vivadent AG
    Inventors: Markus Rampf, Marc Dittmer, Christian Ritzberger, Marcel Schweiger, Wolfram Höland
  • Patent number: 10202304
    Abstract: The present disclosure relates to a component for low-temperature applications, a process for producing such a component, and the use thereof.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: February 12, 2019
    Assignee: SCHOTT AG
    Inventor: Ralf Jedamzik
  • Patent number: 10183888
    Abstract: A glass ceramic substrate made of a transparent, colored LAS glass ceramic is provided. The glass ceramic has a gradient layer with keatite solid solution and an underlying core with high-quartz solid solution as predominant crystal phase. The keatite solid solution in a depth of 10 ?m or greater exceeds 50% of the sum of the high-quartz solid solution proportion and keatite solid solution proportion. The ceramization includes a crystal transformation step, in which the high-quartz solid solution is transformed at a maximum temperature in the range of 910° to 980° and a time period of between 1 and 25 minutes in part into the keatite solid solution.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: January 22, 2019
    Assignee: SCHOTT AG
    Inventors: Falk Gabel, Oliver Hochrein, Evelin Weiss, Roland Dudek, Uwe Martens
  • Patent number: 10023720
    Abstract: Provided is a filler powder that has a lower coefficient of thermal expansion than silica powder and is less likely to cause quality and color alteration of a resin when blended into the resin. The filler powder is made of a crystallized glass in which ?-quartz solid solution and/or ?-eucryptite is precipitated. The filler powder preferably has an average particle size D50 of 5 ?m or less. The filler powder preferably has a coefficient of thermal expansion of 5×10?7/° C. or less in a range of 30 to 150° C.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: July 17, 2018
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Noriaki Masuda, Yohei Hosoda, Shingo Nakane, Hiroki Yamazaki
  • Patent number: 10017414
    Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-18 Al2O3; 5-14 Li2O; 2-12 B2O3; and 0.4-2 Fe2O3. Additionally, these glasses and glass-ceramics can exhibit the following criteria: a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + Zn ? O ] [ Al 2 ? O 3 ] between 0.8 to 1.5. The glass-ceramics also exhibit colors at an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance of a* between ?0.5 and 0.5, b* between ?2.5 and +2, and L* between 90 and 93.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 10, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Qiang Fu, Charlene Marie Smith
  • Patent number: 9926222
    Abstract: The present disclosure relates to an insulation material for a conductor bar of an electric machine. An object of the invention is to provide for an alternative insulation material in the field of electric machines. The object is solved by an insulation material for a conductor bar for an electric machine comprising glass-ceramic flakes made from a heat treated silica glass precursor in the shape of flakes. Further disclosed are a corresponding method and the use of glass-ceramic flakes as an insulation material for a conductor bar of an electric machine.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: March 27, 2018
    Assignee: General Electric Technology GmbH
    Inventors: Thomas Hillmer, Paul Howard, Iwona Szkoda-Giannaki, Thomas Baumann
  • Patent number: 9896375
    Abstract: A colored glass, a surface of which is roughened in whole or in part. In the colored glass, an average value of gloss values measured at 9 points in the surface thereof at an incident angle of 60° in accordance with JIS 28741 (1991) is 30 or less, a ratio of a difference between a maximum gloss value and a minimum gloss value to the maximum gloss value is 20% or less, and a minimum value of visible-light transmittance at a thickness of 0.8 mm is 70% or less.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: February 20, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yoshitaka Saijo, Mitsuru Wakatsuki, Takahiro Sakagami
  • Patent number: 9868663
    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: July 1, 2016
    Date of Patent: January 16, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Samir Biswas, Qiang Fu, David Myron Lineman, Ronald Leroy Stewart
  • Patent number: 9850582
    Abstract: A surface that includes a three-dimensional surface, wherein a notch is present in said three-dimensional surface. The surface further includes a metal edge inserted into the notch and attached to the three-dimensional surface.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: December 26, 2017
    Assignee: DE GIULIO DESIGNS, LLC
    Inventor: Michael De Giulio
  • Patent number: 9790125
    Abstract: Disclosed herein are glass-ceramics having crystalline phases including ?-spodumene ss and either (i) pseudobrookite or (ii) vanadium or vanadium containing compounds so as to be colored and opaque glass-ceramics having coordinates, determined from total reflectance—specular included—measurements, in the CIELAB color space of the following ranges: L*=from about 20 to about 45; a*=from about ?2 to about +2; and b*=from about ?12 to about +1. Such CIELAB color space coordinates can be substantially uniform throughout the glass-ceramics. In each of the proceeding, ?-quartz ss can be substantially absent from the crystalline phases. If present, ?-quartz ss can be less than about 20 wt % or, alternatively, less than about 15 wt % of the crystalline phases. Also Further crystalline phases might include spinel ss (e.g., hercynite and/or gahnite-hercynite ss), rutile, magnesium zinc phosphate, or spinel ss (e.g., hercynite and/or gahnite-hercynite ss) and rutile.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: October 17, 2017
    Assignee: CORNING INCORPORATED
    Inventors: George Halsey Beall, Matthew John Dejneka, Sinue Gomez, Charlene Marie Smith, Steven Alvin Tietje
  • Patent number: 9751798
    Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 60-75 SiO2; 10-18 Al2O3; 5-14 Li2O; and 4.5 B2O3. The glass-ceramics also have a Vickers initiation crack threshold of at least about 25 kgf.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 5, 2017
    Assignee: CORNING INCORPORATED
    Inventors: George Halsey Beall, Qiang Fu, Charlene Marie Smith, Randall Eugene Youngman
  • Patent number: 9718736
    Abstract: Disclosed is a sintering process for ceramic sheets. After biscuit firing and glazing, a green body is placed in a kiln, wherein the temperature of the kiln is controlled such that: when the kiln temperature is 100-400° C., the temperature rise duration is 1-2 hours when the kiln temperature is 400-900° C., the temperature rise duration is 2-3 hours; when the kiln temperature is 900-1100° C., the temperature rise duration must reach 3 hours or more; when the kiln temperature is 1100-1350° C. the temperature rise duration is controlled to be 3-4 hours; and after the temperature reaches 1350° C., heat-preservation cooling is conducted; when the temperature drops to 1230-1270° C., the temperature is raised again to 1290-1310° C.; when the temperature drops again to 880-920° C., the kiln cover is opened for cooling, and the finished product is taken out.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: August 1, 2017
    Assignee: FUJIAN JIAMEI GROUP CORPORATION
    Inventor: Zhihan Chen
  • Patent number: 9650286
    Abstract: Beta-quartz glass-ceramics containing in their composition neither arsenic oxide nor antimony oxide and having a controlled transmission curve, articles made using the glass-ceramics, including cooktops, and precursor glasses of such glass-ceramics.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: May 16, 2017
    Assignee: EUROKERA
    Inventors: Marie Jacqueline Monique Comte, Isabelle Marie Melscoët-Chauvel, Michel Jean Gerard Lismonde
  • Patent number: 9607765
    Abstract: A composition for ceramic substrates that includes a mixture of borosilicate glass powder and ceramic powder. The borosilicate glass powder contains 4% to 8% by weight B2O3, 38% to 44% by weight SiO2, 3% to 10% by weight Al2O3, and 40% to 48% by weight MO, where MO is at least one selected from CaO, MgO, and BaO. The mixing proportions of the borosilicate glass powder and the ceramic powder are 50% to 56% by weight the borosilicate glass powder and 50% to 44% by weight the ceramic powder. The ceramic powder has an average particle diameter D50 of 0.4 to 1.5 ?m.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 28, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kazuo Kishida, Seiji Fujita, Yuichi Iida
  • Patent number: 9593040
    Abstract: Methods, compositions, and articles provide for LAS-type glass-ceramics having specific thermo-mechanical, optical and coloration characteristics to yield generally brown-grey products. The glass-ceramic materials may include as colorants iron oxide, vanadium oxide, chromium oxide, cobalt oxide, nickel oxide and/or cerium oxide.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: March 14, 2017
    Assignee: EUROKERA
    Inventors: Marie Jacqueline Monique Comte, Cécile Jousseaume, Philippe Lehuede, Kamila Plevacova
  • Patent number: 9546106
    Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-18 Al2O3; 5-14 Li2O; 2-12 B2O3; and 0.4-2 Fe2O3. Additionally, these glasses and glass-ceramics can exhibit the following criteria: a ? ? ratio ? : ? [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO _ ] ? [ Al 2 ? O 3 ] between 0.8 to 1.5. The glass-ceramics also exhibit colors at an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance of a* between ?0.5 and 0.5, b* between ?2.5 and +2, and L* between 90 and 93.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 17, 2017
    Assignee: Corning Incorporated
    Inventors: Qiang Fu, Charlene Marie Smith
  • Patent number: 9446982
    Abstract: Transparent or transparent dyed lithium aluminum silicate (LAS) glass ceramic material is provided that has an adapted thermal expansion. The material includes high-quartz mixed crystals as the predominant crystalline phase, and a thermal expansion between room temperature and 700° C. from 1.0 to 2.5·10?6/K.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: September 20, 2016
    Assignee: SCHOTT AG
    Inventors: Friedrich Siebers, Evelin Weiss, Klaus Schoenberger
  • Patent number: 9416048
    Abstract: To provide a crystallized glass capable of attaining the same clarification effect as in the composition containing an arsenic component and an antimony component even in the case of having the composition containing no arsenic component, while maintaining various physical properties peculiar to a Li2O—Al2O3—SiO2-based crystallized glass. Disclosed is a crystallized glass which is characterized by containing a predetermined amount of Li2O, Al2O3, and SiO2 components (on an oxide basis), and containing a predetermined amount of BaO component (on an oxide basis) and the like. This crystallized glass preferably contains ?-quartz and/or ?-quartz solid solution as main crystal phase(s), an average crystal particle size of the main crystal phase(s) being preferably within a range between 5 and 200 nm.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: August 16, 2016
    Assignee: OHARA INC.
    Inventor: Ryo Sawai
  • Patent number: 9403716
    Abstract: Disclosed herein are one or more of formable and/or color-tunable, crystallizable glasses; formed and/or color-tuned glass-ceramics; IXable, formed and/or color-tuned glass-ceramics; IX, formed and/or color-tuned glass-ceramics; a machine or equipment including a formed and/or color-tuned glass-ceramic; a machine or equipment including an IXable, formed and/or color-tuned glass-ceramics; a machine or equipment including an IX, formed and/or color-tuned glass-ceramics; one or more processes for making formable, crystallizable glasses crystallizable; one or more processes for making formable and/or color-tunable, crystallizable glasses; one or more processes for making formed and/or color-tuned glass-ceramics; one or more processes for making IXable, formed and/or color-tuned glass-ceramics; one or more processes for making IX, formed and/or color-tuned glass-ceramics; and one or more processes for using any one of formable and/or color-tunable, crystallizable glasses; formed and/or color-tuned glass-ceramics;
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: August 2, 2016
    Assignee: CORNING INCORPORATED
    Inventors: Matthew John Dejneka, Charlene Marie Smith
  • Patent number: 9321672
    Abstract: To provide a crystallized glass housing excellent in properties suitable for a housing for an electronic device, such as shielding properties, high strength and production cost. A crystallized glass housing made of crystallized glass, said crystallized glass having a diffused transmittance of 15% or less in the entire light wavelength region of from 380 nm to 780 nm, as measured by using an integrated sphere.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: April 26, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Makoto Shiratori, Yuuichi Iida, Kazuhide Kuno
  • Patent number: 9260342
    Abstract: Process for preparing glass-ceramic body including the steps of providing a basic glass body and subjecting the basic glass body to a thermal treatment whereby a crystalline phase embedded in a glass matrix is formed. The basic glass body is made of a composition comprising 65 to 72 wt-% SiO2, at least 10.1 wt-% Li2O and at least 10.1 wt-% Al2O3 based on the total weight of the composition, the proportion of Li2O to Al2O3 being from 1:1 to 1.5:1. The thermal treatment involves a nucleation step followed by several crystallization steps at different temperatures, whereby at least two different crystalline phases are formed.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: February 16, 2016
    Assignee: STRAUMANN HOLDING AG
    Inventors: Maria Borczuch-Laczka, Katharzyna Cholewa-Kowalska, Karolina Laczka
  • Patent number: 9236075
    Abstract: It is an object of the present invention to provide a crystallized glass which has various properties required for employing the substrate for information recording medium of the next generation, and also has significantly low specific gravity; and a crystallized glass substrate for information recording medium. A crystallized glass containing, as a crystal phase, one or more selected from RAl2O4 and R2TiO4 (wherein R is one or more selected from Mg and Fe), the crystallized glass comprising the components of SiO2 of 50% to 70%, Al2O3 of 10% to 26%, TiO2 of 1 to 15%, MgO of 2.5% to 25%, FeO of 0% to 8%, and ZnO of 0% to less than 2%, expressed in terms of mass percentage on an oxide basis, wherein the value of (Al2O3+MgO)/SiO2 is 0.30 or more and 0.65 or less, and a specific gravity is less than 2.63.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: January 12, 2016
    Assignee: OHARA INC.
    Inventors: Kiyoyuki Momono, Katsuhiko Yamaguchi, Toshitaka Yagi, Naoyuki Goto