Binary, Ternary, Quaternary, Etc., Metal Silicate Crystalline Phase (e.g., Mullite, Diopside, Sphene, Plagioclase, Slagcerams Free Of Alumina, Etc.) Patents (Class 501/5)
  • Patent number: 11005237
    Abstract: An ignition plug comprising: an insulator having a through hole extending from a rear-end side toward a forward-end side; a center electrode inserted at least partially into a portion of the through hole on the forward-end side; a metal terminal member inserted at least partially into a portion of the through hole on the rear-end side; and a seal disposed within the through hole and in contact with the center electrode and an inner circumferential surface of the insulator. The seal contains a glass and an electrically conductive substance, and the glass contained in the seal contains Si in an amount of 50 mass % or more as reduced to SiO2 and Na in an amount of 0.1 mass % or more and less than 1 mass % as reduced to Na2O.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: May 11, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Seiji Nakano, Kengo Fujimura, Shoma Tsumagari
  • Patent number: 10765496
    Abstract: The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 8, 2020
    Assignees: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., VITA ZAHNFABRIK H. RAUTER GMBH & CO. KG, DEGUNDENT GMBH
    Inventors: Bernhard Durschang, Jörn Probst, Norbert Thiel, Joachim Bibus, Markus Vollmann, Udo Schusser
  • Patent number: 10702948
    Abstract: A method provides for producing modifications in or on a transparent workpiece using a laser processing device. The laser processing device has a short pulse or ultrashort pulse laser that emits laser radiation having a wavelength in the transparency range of the workpiece and which has a beam-shaping optical unit for beam shaping for focusing the laser radiation. The transparent workpiece is composed of a material that has a plurality of phases, of which at least two phases have different dielectric constants, of which in turn the one phase is a phase embedded in the form of particles, which phase is substantially surrounded by the other phase, and wherein the product of the volume of the particles specified in cubic nanometers and the ratio of the absolute value of the difference of the two different dielectric constants to the dielectric constant of the surrounding phase is greater than 500.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: July 7, 2020
    Assignee: Schott AG
    Inventors: Andreas Ortner, Niklas Bisch, Fabian Wagner, Albrecht Seidl, Frank-Thomas Lentes
  • Patent number: 10629513
    Abstract: The disclosed concept relates to electrical isolation between power electronic and cooling and/or mounting components and, in particular, a ceramic layer positioned at the interface of the power electronic and cooling and/or mounting components to provide electrical isolation, as well as, a thermally conductive path to remove heat produced by the power electronic component.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: April 21, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: David Glenn Woolard, Paul Thomas Murray
  • Patent number: 10590028
    Abstract: Lithium silicate-wollastonite glass ceramics are described which are characterized by a controllable translucence and can be easily machined and therefore can be used in particular as restoration material in dentistry.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: March 17, 2020
    Assignee: Ivoclar Vivadent AG
    Inventors: Marc Dittmer, Wolfram Höland, Markus Rampf, Marcel Schweiger
  • Patent number: 10562815
    Abstract: The present invention relates to structure including an interfacial seal between a glass-ceramic component and a metal component, as well as methods for forming such structures. In particular embodiments, the interfacial seal includes a metal oxide. Such interfacial seals can be beneficial for, e.g., hermetic seals between a glass-ceramic component and a metal component.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: February 18, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventor: Steve Xunhu Dai
  • Patent number: 10551590
    Abstract: Example methods of manufacturing a glass mirror apparatus includes the step of providing a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. The method further includes the step of applying a reflective layer to the second major surface of the glass sheet to provide a first glass mirror. In further examples, a glass mirror apparatus comprises a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. A reflective layer applied to the second major surface of the glass sheet to provide a first glass mirror.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 4, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Christopher Alan Nitz, Michael Aaron McDonald, Chunhe Zhang
  • Patent number: 10501367
    Abstract: Ceramics and glass-ceramics have low and/or negative coefficients of thermal expansion. Crystalline phases of the formula AM2Si2-yGeyO7 (A=Sr and Ba and M=Zn, Mg, Ni, Co, Fe, Cu, Mn, with Sr, Ba and Zn necessarily having to be present) can be produced by conventional ceramic processes or by crystallization from glasses. The compositions form solid solutions, where the elements indicated as component M can be replaced by one another in virtually any concentration but the concentration of Zn must always be at least 50% of the sum of all components indicated under M. The stoichiometry of these silicates and also their structure can differ to a greater or lesser extent.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 10, 2019
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Christian Thieme, Christian Ruessel
  • Patent number: 10427967
    Abstract: The present invention relates to a process for the manufacture of a glass container that comprises the steps of: a) providing a first glass element; b) providing a second element made of a material selected from: glass, ceramic, metal and metallic alloy; said first element and said second element, joined together, defining a containment cavity of said glass container; c) depositing a sealing composition comprising at least one glass frit dispersed in at least one dispersing liquid on at least one surface of at least one of said first element and said second element; d) positioning said first element and said second element in contact with each other so that said sealing composition is arranged between said first element and said second element; e) heating said sealing composition so as to melt said glass frit and form a sealing layer between said first element and said second element. The present invention further relates to a glass container, such as, for example, a bottle, a cup or a jar, and related uses.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: October 1, 2019
    Assignee: BORMIOLI LUIGI S.P.A.
    Inventor: Simone Baratta
  • Patent number: 10206761
    Abstract: Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: February 19, 2019
    Assignee: Ivoclar Vivadent AG
    Inventors: Harald Bürke, Christian Ritzberger, Marcel Schweiger, Volker Rheinberger, Diana Tauch
  • Patent number: 9926223
    Abstract: A method of bonding a high-strength zirconia post serving as a core in a glass-ceramic block, a method of bonding a metal link fastened with an implant fixture to the zirconia post, and glass-ceramic bondable to the zirconia post and a preparation method thereof, when preparing artificial teeth through a CAD/CAM processing method by using the glass-ceramic block as an artificial-teeth material. The lithium disilicate glass-ceramics containing cristobalite crystalline includes glass-ceramics composition including 10 to 15 wt % Li2O, 68 to 76 wt % SiO2, 2 to 5 wt % P2O5 working as a nuclei formation agent, 0 to 5 wt % Al2O3 to increase glass transition temperature and softening temperature and increase chemical durability of the glass, 2 to 3 wt % ZrO2, 0.5 to 3 wt % CaO for enhancing a thermal expansion coefficient of the glass, 0.5 to 5 wt % Na2O, 0.5 to 5 wt % K2O, and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of MgO, ZnO, F, and La2O3.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: March 27, 2018
    Assignee: HASS CO., LTD.
    Inventors: Yong su Kim, Hyun jun Jeon, Hyung Bong Lim, Kyung Sik Oh, Sung ho Ha, Young pyo Hong, Joon hyung Kim, Cheol young Kim
  • Patent number: 9780357
    Abstract: Disclosed herein is a silicon-based anode active material, comprising a silicon phase, a SiOx (0<x<2) phase and a carbon dioxide phase. Also disclosed is a secondary battery, which comprises a cathode comprising a cathode active material, an anode active material comprising an anode active material, and a separator, wherein the anode active material comprises a silicon phase, an SiOx (0<x<2) phase and a silicon dioxide phase.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: October 3, 2017
    Assignees: LG Chem, Ltd., UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Yong Ju Lee, Soo Jin Park, Hye Ran Jung, Jung In Lee, Je Young Kim, Mi Rim Lee, Jae Phil Cho
  • Patent number: 9757217
    Abstract: Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: September 12, 2017
    Assignee: Ivoclar Vivadent AG
    Inventors: Harald Bürke, Christian Ritzberger, Marcel Schweiger, Volker Rheinberger, Diana Tauch
  • Patent number: 9731995
    Abstract: Exemplary embodiments of the present disclosure provide a lithium silicate crystalline or amorphous glass overlaying the top surfaces of zirconia and the manufacturing process thereof. More specifically, exemplary embodiments of the present disclosure provide a lithium silicate glass or lithium silicate crystalline glass with high light transmittance and good coloring characteristics and the manufacturing process thereof, which overlays the top surface of zirconia with high mechanical strength, frameworks, or copings. The lithium silicate crystalline or amorphous glass may include 10-15 wt % Li2O, 71.1-85.0 wt % SiO2, 2-5 wt % P2O5 working as nuclear formation agent, 1-5 wt % Al2O3 to increase glass transition temperature and softening temperature, as well as chemical durability of the glass, and 0.01-1.0 wt % ZrO2 which increases the binding strength of the zirconia substructure.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 15, 2017
    Assignee: Hass Co., Ltd.
    Inventors: Yong su Kim, Hyun jun Jeon, Hyung bong Lim, Kyung sik Oh, Sung ho Ha, Jin su Jeong, Cheol young Kim
  • Patent number: 9701575
    Abstract: The present invention relates to a glass ceramic powder comprising i) a glass material formed from a glass mixture containing a lithium and oxygen containing compound selected from Li2O and/or Li2CO3, SiO2, K2O, La2O3, and ii) seed particles comprising Li2SiO3 crystals and/or Li2Si2O5 crystals. The present invention also relates to a method of manufacturing of said glass ceramic powder, a method for preparing compacted and sintered bodies from the glass ceramic powder and bodies obtainable by said method.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: July 11, 2017
    Assignee: HARRYSON CONSULTING GMBH
    Inventor: Sigvald Harryson
  • Patent number: 9440877
    Abstract: The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2—R2O3—Li2O/Na2O—TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (?-spodumene and/or ?-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 13, 2016
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Nicholas Francis Borrelli, Charlene Marie Smith, Steven Alvin Tietje
  • Patent number: 9248078
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 2, 2016
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Höland, Elke Apel, Christian Ritzberger, Dmitri Brodkin
  • Patent number: 9125967
    Abstract: The present invention provides a highly-sintered fluorapatite glass-ceramic comprising a high Ca/Al or Sr/Al mole-ratio, that possesses a microstructure that induces apatite/bone deposition.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 8, 2015
    Assignee: University of Iowa Research Foundation
    Inventors: Isabelle Denry, Julie Holloway
  • Patent number: 9101439
    Abstract: Lithium silicate glass ceramics and glasses comprising specific oxides of monovalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: August 11, 2015
    Assignee: Ivoclar Vivadent, AG
    Inventors: Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Patent number: 8987153
    Abstract: The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 4.0-19.0 percent by weight c) Li2O 5.0-17.0 percent by weight d) Na2O 4.0-12.0 percent by weight e) ZrO2 0.5-6.0 percent by weight.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: March 24, 2015
    Assignee: Ivoclar Vivadent AG
    Inventors: Martina Johannes, Roland Ehrt
  • Patent number: 8956987
    Abstract: The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallization and, after complete crystallization, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: February 17, 2015
    Assignees: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung E.V., Vita Zahnfabrik H. Rauter GmbH & Co. KG, Degudent GmbH
    Inventors: Bernhard Durschang, Jorn Probst, Norbert Thiel, Joachim Bibus, Markus Vollmann, Udo Schusser
  • Patent number: 8940651
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Signer-Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker Rheinberger
  • Patent number: 8936732
    Abstract: A white light emitting glass-ceramic. The chemical formula of the glass-ceramic is aSiO2.bAl2O3.cNaF.dCeF3.nDyF3.mAg, wherein a, b, c, d, n and m are, by mol part, 25-50, 15-30, 10-30, 10-25, 0.01-1 and 0.01-1, respectively, and a+b+c+d-100. A method for producing said glass-ceramic is also provided. Silver ion is doped in the glass-ceramic in the form of silver particles by means of sintering and reduction annealing treatment, and thus the luminescence properties of rare earth ion is improved.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: January 20, 2015
    Assignee: Ocean's King Lighting Science & Technology Co., Ltd.
    Inventors: Mingjie Zhou, Wenbo Ma, Fangyi Weng
  • Publication number: 20150004418
    Abstract: A bonded ceramic component which is resistant to reactive halogen-containing plasmas, said component comprising ceramic portions which are bonded together by a bonding material which includes an oxyfluoride glass-ceramic-comprising transition area between interfaces of the ceramic portions, where the transition area includes from at least 0.1 volume % amorphous phase up to about 50 volume % amorphous phase.
    Type: Application
    Filed: September 8, 2014
    Publication date: January 1, 2015
    Applicant: Applied Materials, Inc.
    Inventors: Jennifer Y. Sun, Ren-Guan Duan, Kenneth S. Collins
  • Patent number: 8883663
    Abstract: The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2—R2O3—Li2O/Na2O—TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (?-spodumene and/or ?-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: November 11, 2014
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Nicholas Francis Borrelli, Charlene Marie Smith, Steven Alvin Tietje
  • Patent number: 8871664
    Abstract: Provided is a manufacturing method for a refractory filler, comprising melting a raw material batch and cooling the resultant melt to precipitate willemite as a main crystal phase.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: October 28, 2014
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Tomoko Enomoto, Hiroyuki Okamura, Nobutoshi Ito
  • Patent number: 8865606
    Abstract: The invention relates to a process for preparing dental restorations, wherein a lithium silicate glass ceramic or a lithium silicate glass is used which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 21, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Höland, Marcel Schweiger, Volker Rheinberger
  • Publication number: 20140296053
    Abstract: A glass-ceramics composite material suitable for a low-temperature firing use, which has high moisture resistance and thermal conductivity, is provided. In the glass-ceramics composite material which contains aluminum nitride (AlN) particles as a filler, even in a case where boron oxide (B2O3) is blended as a flux of a glass phase, by adjusting the composition of raw materials which forms the glass phase to a specific conditions to make the crystal phase which contains boron (B) precipitate at the time of firing of the glass-ceramics composite material.
    Type: Application
    Filed: March 11, 2014
    Publication date: October 2, 2014
    Applicant: NGK Insulators, Ltd.
    Inventors: Shinsuke YANO, Yoshihiro TANAKA, Naoto OHIRA, Hirofumi YAMAGUCHI
  • Publication number: 20140206522
    Abstract: An easily-administered technology which demonstrates the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) and makes it possible to sufficiently raise the thermal conductivity of a glass-ceramics composite material is provided. In the glass phase which constitutes a glass-ceramics composite material, the quantity of aluminum oxide (Al2O3) component is increased under a condition where at least either of zinc oxide (ZnO) component or magnesium oxide (MgO) component exists in a predetermined quantity or more. Thereby, the unintended reaction between a non-oxide system compound crystal phase and a glass phase can be suppressed, and the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) can be demonstrated.
    Type: Application
    Filed: March 21, 2014
    Publication date: July 24, 2014
    Applicant: NGK Insulators, Ltd.
    Inventors: Shinsuke YANO, Yoshihiro TANAKA, Tsutomu NANATAKI, Hirofumi YAMAGUCHI, Natsumi SHIMOGAWA, Naoto OHIRA
  • 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
  • Patent number: 8772188
    Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: July 8, 2014
    Assignee: Schott AG
    Inventors: Martin Letz, Stephan Knoener, Martina Dressler, Daniela Seiler, Bernd Hoppe, Michael Kluge
  • Patent number: 8759237
    Abstract: The invention relates to a lithium silicate glass ceramic, which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides. The invention also relates to a corresponding lithium silicate glass, a process for the preparation of the glass ceramic and of the glass as well as their use.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: June 24, 2014
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Wolfram Holand, Marcel Schweiger, Volker Rheinberger
  • Publication number: 20140066283
    Abstract: A glass ceramic composition that contains a first ceramic including at least one of MgAl2O4 and Mg2SiO4; a second ceramic including BaO, RE2O3 (RE is a rare-earth element), and TiO2; glass containing each of 44.0 to 69.0 weight % of RO (R is an alkaline-earth metal), 14.2 to 30.0 weight % of SiO2, 10.0 to 20.0 weight % of B2O3, 0.5 to 4.0 weight % of Al2O3, 0.3 to 7.5 weight % of Li2O, and 0.1 to 5.5 weight % of MgO; and MnO.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 6, 2014
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kazuhiro Kaneko, Sadaaki Sakamoto, Hiroshige Adachi, Satoru Adachi, Seiji Fujita
  • Patent number: 8664131
    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; 10.5-17 Al2O3; 5-13 Li3O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO _ ] ? [ Al 2 ? O 3 + B 2 ? O 3 ] between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 _ ] ? [ SiO 2 + B 2 ? O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity ?about 85% over the wavelength range of 400-700 nm for an about 0.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: March 4, 2014
    Assignee: Corning Incorporated
    Inventors: George Halsey Beall, Marie Jacqueline Monique Comte, George Owen Dale, Linda Ruth Pinckney, Charlene Marie Smith, Ronald Leroy Stewart, Steven Alvin Tietje
  • Patent number: 8592330
    Abstract: The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 ?4.0-19.0 percent by weight c) Li2O ?5.0-17.0 percent by weight d) Na2O ?4.0-12.0 percent by weight e) ZrO2 ?0.5-6.0 percent by weight.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: November 26, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Martina Johannes, Roland Ehrt
  • Patent number: 8546280
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: October 1, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Wolfram Höland, Marcel Schweiger, Christian Ritzberger, Harald Bürke, Volker M. Rheinberger
  • Patent number: 8444756
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: May 21, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Marcel Schweiger, Volker Rheinberger, Harald Burke, Wolfram Holand, Elke Apel, Christian Ritzberger, Dmitri Brodkin
  • Patent number: 8431498
    Abstract: The invention provides a crystallizable glass, a crystallized glass, and manufacturing methods thereof. The crystallizable glass can be crystallized in a short period of time, and can maintain its glass shape and its surface condition during a crystallization process. The crystallized glass has good mechanical strength, an adequate thermal expansion coefficient that allows the crystallized glass to be used as a construction material, less content of alkali-metal oxides, and good chemical durability. The MgO—Al2O3—SiO2-based crystallizable glass and crystallized glass contain, by mass percent, 55.0-65.0% SiO2, 8.0-14.0% Al2O3, 10.0-20.0% MgO, 1.5-6.0% CaO, 1.0-2.2% Li2O, 0.7-3.0% Na2O, 2.5-4.0% K2O, and 1.5-3.0% F.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: April 30, 2013
    Assignees: Huzhou Ta Hsiang Glass Products Co., Ltd., Ta Hsiang Containers Inc. Do., Ltd.
    Inventors: Kuo-Chuan Hsu, Chao Qu
  • Patent number: 8282878
    Abstract: Embodiments of the present invention disclosed herein include a sintering aid composition that has a material useful for sintering, an amine, and optionally a carboxylic acid.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: October 9, 2012
    Assignee: Huntsman Petrochemical LLC
    Inventors: Alan P. Croft, David C. Lewis
  • Patent number: 8283268
    Abstract: The colorless transparent colloid-former-containing glass that is convertible into a colorless transparent glass ceramic or a metal colloid-colored glass ceramic via respective heat treatments contains a combination of one or more metal colloid formers and one or more redox partners. The metal colloid formers are compounds containing Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and/or Sn. The redox partners are compounds containing As, Ce, Fe, Mn, Sb, Sn and/or W, with the proviso that the redox partner must be different from the metal colloid former.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: October 9, 2012
    Assignee: Schott AG
    Inventors: Meike Schneider, Thilo Zachau, Friedrich Siebers, Wolfgang Schmidbauer
  • Patent number: 8263508
    Abstract: A phosphosilicate glass ceramic with nanoscale fluoroapatite and leucite crystals. The glass ceramic is very similar to natural tooth material in terms of its optical properties. The glass ceramic has a low linear thermal expansion coefficient and a low pressing temperature and is therefore particularly suitable for pressing on metal alloys to produce dental restoration.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 11, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Urs Bolle, Marcel Schweiger, Elke Apel, Wolfram Höland, Volker Rheinberger
  • Patent number: 8162664
    Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: April 24, 2012
    Assignee: Ivoclar Vivadent AG
    Inventors: Elke Apel, Wolfram Holland, Marcel Schweiger, Christian Ritzberger, Harald Burke, Volker Rheinberger
  • Patent number: 8158261
    Abstract: A glass-ceramic composite encapsulation material composed of glass matrix materials of SiO2, Al2O3, BaO and B2O3, and at least one glass filler selected from the group consisting of kaliophilite (KAlSiO4), leucite (KAlSi2O6), magnesium oxide (MgO). The glass-ceramic composite encapsulation material according to the invention comprises a high temperature type glass matrix (softening point: 750-850° C.) and a intermediate temperature type glass matrix (softening point: 650-750° C.), and glass filler mixed therein, wherein said glass filler in the high temperature type glass matrix comprises 5% to 20% by volume of the total volume of said glass matrix and glass filler, and the glass filler in the intermediate temperature type glass matrix comprises 0% to 40% by volume of the total volume of said glass matrix and glass filler, and wherein said glass filler has an effect of adjusting the expansion coefficient.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: April 17, 2012
    Assignee: National Taipei University Technology
    Inventors: Sea-Fue Wang, Yun-Ruey Wang, Ching-Chin Chuang, Chun-Ting Yeh
  • Patent number: 8133828
    Abstract: Glass-ceramic compositions exhibiting high reliability and tensile strength are described. The compositions can include crystal phases including roedderite and/or potassium fluorrichterite. The glass-ceramic compositions are bioactive, and can be used as components of a wide variety of biomedical devices such as dental restorations.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 13, 2012
    Assignee: The Ohio State University Research Foundation
    Inventors: Isabelle L. Denry, Julie A. Holloway
  • Patent number: 8114795
    Abstract: For providing glass-ceramics having properties suitable for use as a substrate of an information storage medium of next generation such as one for the perpendicular magnetic recording system without employing arsenic and antimony components which adversely affect human beings and the environment, there are provided glass-ceramics comprising SiO2, Li2O and Al2O3 on oxide basis, comprising lithium disilicate as a crystal phase, and comprising one or more elements selected from the group consisting of Sn, Ce, Mn, W, Ta, Bi, Nb, S, Cl and F.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: February 14, 2012
    Assignee: Ohara Inc.
    Inventors: Toshitaka Yagi, Naoyuki Goto
  • Patent number: 8093167
    Abstract: For providing glasses and glass-ceramics having properties suitable for use as a substrate of an information storage medium of next generation such as one for the perpendicular magnetic recording system without employing arsenic and antimony components which adversely affect human beings and the environment, there are provided glass-ceramics comprising SiO2, Li2O and Al2O3 on oxide basis, comprising lithium disilicate as a crystal phase, and comprising one or more elements selected from the group consisting of Sn, Ce, Mn, W, Ta, Bi, Nb, S, Cl and F.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: January 10, 2012
    Assignee: Ohara Inc.
    Inventors: Toshitaka Yagi, Naoyuki Goto
  • Patent number: 8071493
    Abstract: In all of an in-plane magnetic recording system and a perpendicular magnetic recording system, there is provided a crystallized glass for a disk substrate for information recording medium, etc., which has satisfactory surface properties capable of sufficiently adapting with a lamp loading system for high-density recording, has high strength such that it is able to withstand high-speed rotation and impact, has heat expansion properties and heat resistance in agreement with respective drive members, has a low melting temperature, has excellent productivity and is reduced in the elution amount of an alkali from the raw material, namely excellent in chemical durability. The crystallized glass of the invention is a crystallized glass containing an SiO2 component and an Li2O component; further containing at least one member selected from an SrO component and a BaO component in a total content of more than 3.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: December 6, 2011
    Assignee: Ohara Inc.
    Inventor: Toshitaka Yagi
  • Patent number: 8063000
    Abstract: Materials and methods for making low bulk density proppant capable of providing permeability at subterranean pressures. The low bulk density proppant is made from kaolin clay and at least one of calcined diatomaceous earth and burned kaolin clay.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: November 22, 2011
    Assignee: Carbo Ceramics Inc.
    Inventor: Brett Allen Wilson
  • Publication number: 20110198029
    Abstract: The amorphous and/or partially crystalline glass solders are particularly suitable for high-temperature applications, e.g. in fuel cells or sensors in the exhaust gas stream of internal combustion engines. The glass solder is characterized by a linear coefficient of thermal expansion in the temperature range from 20° C. to 300° C. of 8.0×10?6 K?1 to 11.0×10?6 K?1 and a hemisphere temperature of 820° C. to 1100° C. and is suitable for laser bonding.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 18, 2011
    Inventor: Bastian Schoen
  • Patent number: 7993571
    Abstract: A ceramic component is provided, including a ceramic body containing silicon carbide, and an oxide layer provided on the ceramic body, the oxide layer being formed by oxidizing the ceramic body in the presence of alumina having a submicron particle size.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: August 9, 2011
    Assignee: Saint-Gobain Ceramic & Plastics, Inc.
    Inventor: Raymond H. Bryden