And Phosphorus, Niobium, Or Tantalum Patents (Class 501/63)
  • Patent number: 11225430
    Abstract: A glass, glass ceramic, or ceramic bead is described, with an internal porous scaffold microstructure that is surrounded be an amorphous shield. The shield serves to protect the internal porous microstructure of the shield while increasing the overall strength of the porous microstructure and improve the flowability of the beads either by themselves or in devices such as biologically degradable putty that would be used in bone or soft tissue augmentation or regeneration. The open porosity present inside the bead will allow for enhanced degradability in-vivo as compared to solid particles or spheres and also promote the growth of tissues including but not limited to all types of bone, soft tissue, blood vessels and nerves.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 18, 2022
    Inventor: Steven Jung
  • Patent number: 11104602
    Abstract: Embodiments of alkali aluminosilicate glass articles that may be chemically strengthened to achieve a maximum surface compressive stress that exceeds compressive stresses that have been achieved in similar glasses are disclosed. In one or more embodiments, the fictive temperature of these glass articles may be equal to the 1011 poise (P) viscosity temperature of the glass article. In some embodiments, the strengthened alkali aluminosilicate glass articles described herein may exhibit a maximum compressive stress of at least about 400 MPa, 800 MPa, 930 MPa or 1050 MPa. In some embodiments, the strengthened alkali aluminosilicate glass articles described herein may exhibit a compressive stress layer extending to a depth of layer of at least about 40 ?m (in samples having a thickness of 1 mm). In still other embodiments, these strengthened alkali aluminosilicate glass articles exhibit a parabolic or near-parabolic tensile stress profile in the central region of the glass articles.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: August 31, 2021
    Assignee: Corning Incorporated
    Inventor: Timothy Michael Gross
  • Patent number: 10689289
    Abstract: An optical glass having a small partial dispersion ratio (?g,F), while having a refractive index (nd) and Abbe number (?d) within desired ranges, is obtained. The optical glass, in mass %, comprises 10.0 to 70.0% of an SiO2 component, 1.0 to 50.0% of an Nb2O5 component, and 1.0 to 30.0% of an Na2O component, and has a refractive index (nd) of 1.62 to 1.75, an Abbe number (?d) of 30 to 42, and a partial dispersion ratio (?g,F) of no greater than 0.594.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: June 23, 2020
    Assignee: OHARA INC.
    Inventors: Ken Kikkawa, Atsushi Nagaoka
  • Patent number: 10633279
    Abstract: A glass composition includes: from 55.0 mol % to 70.0 mol % SiO2; from 12.0 mol % to 20.0 mol % Al2O3; from 5.0 mol % to 15.0 mol % Li2O; and from 4.0 mol % to 15.0 mol % Na2O. The glass composition has the following relationships ?8.00 mol %?R2O+RO—Al2O3—B2O3—P2O5??1.75 mol %, 9.00?(SiO2+Al2O3+Li2O)/Na2O, and (Li2O+Al2O3+P2O5)/(Na2O+B2O3)?3.50. The glass composition may be used in a glass article or a consumer electronic product.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: April 28, 2020
    Assignee: CORNING INCORPORATED
    Inventors: Timothy Michael Gross, Xiaoju Guo, Peter Joseph Lezzi, Alexandra Lai Ching Kao Andrews Mitchell, Rostislav Vatchev Roussev
  • Patent number: 10505129
    Abstract: A redrawing method for the production of thin glasses is provided that allows redraw of high refractive index optical glasses. The includes the steps of providing a vitreous preform with a mean width B, a mean thickness D, and a refractive index nD of at least 1.68 in a redrawing device, heating at least a part of the preform, redrawing of the preform to a thin glass with a mean width b and a mean thickness d. The heated part of the preform exhibits, for the duration of at most 30 minutes, a temperature above a lower limit of devitrification of the glass. The glass of the preform exhibits a dependence of the viscosity on the temperature, which is characterized by a mean decrease of the viscosity with increasing temperature in an viscosity range of 108 to 105 dPas of at least 3*105 dPas/K.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: December 10, 2019
    Assignee: SCHOTT AG
    Inventors: Bernd Loeffelbein, Frank Buellesfeld, Andreas Langsdorf
  • Patent number: 10370289
    Abstract: An optical glass having a small partial dispersion ratio (?g,F), while having a refractive index (nd) and Abbe number (?d) within desired ranges, is obtained. The optical glass, in mass %, comprises 10.0 to 70.0% of an SiO2 component, 1.0 to 50.0% of an Nb2O5 component, and 1.0 to 30.0% of an Na2O component, and has a refractive index (nd) of 1.62 to 1.75, an Abbe number (?d) of 30 to 42, and a partial dispersion ratio (?g,F) of no greater than 0.594.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: August 6, 2019
    Assignee: OHARA INC.
    Inventors: Ken Kikkawa, Atsushi Nagaoka
  • Patent number: 10246369
    Abstract: A high refractive index glass is provided. The glass has a refractive index greater than or equal to 1.7 and less than about 0.1 wt. % As2O3. A head mounted wearable device having a light guide optical element including high refractive index glass is also provided.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: April 2, 2019
    Assignee: CORNING INCORPORATED
    Inventors: Jean Marc Galea, Thierry Michel Dugue
  • Patent number: 10239784
    Abstract: A non-frangible glass article strengthened by a dual or two-step ion exchange (IOX) process, where the first IOX step leads to a depth of compressive layer FSM_DOL>0.1·t or, in some embodiments, FSM_DOL>0.15·t, where t is the thickness of the glass, is provided. The glass article has a compressive stress CS1 after the first IOX step at the surface of from 100 MPa to 400 MPa or, in some embodiments, from 150 MPa to 300 MPa. The first IOX step is followed by a second IOX step, leading to a “spike” compressive stress CS2 after the second IOX step at the surface of greater than 500 MPa or, in some embodiments, 700 MPa. The width of the spike generated by the second IOX is between 1 ?m and 30 ?m, or between 8 ?m and 15 ?m, using the criteria where the magnitude (absolute value) of the slope of the spike is higher than 20 MPa/?m.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: March 26, 2019
    Assignee: Corning Incorporated
    Inventors: Pascale Oram, Rostislav Vatchev Roussev, Vitor Marino Schneider, Emily Elizabeth Young
  • Patent number: 10206298
    Abstract: Glass articles having a base layer formed of glass and having a first compressive stress, an adjacent compression layer formed in the glass and having a second compressive stress, and a witness layer formed in the glass adjacent the compression layer and having a third compressive stress. The first, second and third compressive stresses all differing from one another. The witness layer also having a higher index of refraction than an index of refraction for the base or compression layers. Methods for manufacturing and methods of quality control that include the use of the witness layer are also disclosed.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 12, 2019
    Assignee: APPLE INC.
    Inventors: Dale N. Memering, Dezheng Qu, Victor Luzzato
  • Patent number: 9975803
    Abstract: An alkali aluminosilicate glass that can be chemically strengthened and formed into a three dimensional shape. The glass has a softening point of less than about 825° C. and a high temperature coefficient of thermal expansion of less than about 30 parts per million (ppm)/° C. The glass may be ion exchanged after the three dimensional shape is formed. When ion exchanged, the glass has a surface layer that is under a compressive stress of at least about 700 MPa.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: May 22, 2018
    Assignee: CORNING INCORPORATED
    Inventor: Timothy Michael Gross
  • Patent number: 9902648
    Abstract: Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 ?m within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and an equibiaxial flexural strength of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: February 27, 2018
    Assignee: CORNING INCORPORATED
    Inventors: Jaymin Amin, Benedict Osobomen Egboiyi, Jonathan David Pesansky, Kevin Barry Reiman, Rostislav Vatchev Roussev, Brian Paul Strines
  • Patent number: 9527767
    Abstract: Alkali-free phosphoboroaluminosilicate glasses are provided. The glasses include the network formers SiO2, B2O3, and at least one of Al2O3 and P2O5. The glass may, in some embodiments, have a Young's modulus of less than about 78 GPa and/or a coefficient of thermal expansion, averaged over a temperature range from about 20° C. to about 300° C., of less than about 38×10?7/° C. The glass may be used as a cover glass for electronic devices or as an outer clad layer for a glass laminate.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: December 27, 2016
    Assignee: Corning Incorporated
    Inventors: Adam James Ellison, John Christopher Mauro, Natesan Venkataraman
  • Patent number: 9233871
    Abstract: Provided is optical glass that does not contain lead, which is an environmental pollutant. The optical glass is ideal for the transmission of light even after being exposed to X-rays, and has a high refractive index. The optical glass comprises, by mass % in terms of oxide versus the glass total mass, 1.0% to 60.0% of an SiO2 component, and one or more selected from the group consisting of an La2O3 component, ZrO2 component, TiO2 component, Nb2O5 component, and Ta2O5 as essential components. The optical glass has a refractive index (nd) of 1.50 or greater, and has a light intensity recovery rate of 45% or greater when the glass having been irradiated with X-rays with a dose of 2.5 Gy is irradiated with light of a xenon lamp for 11 hours.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 12, 2016
    Assignee: OHARA INC.
    Inventors: Michiko Ogino, Masahiro Onozawa
  • Patent number: 9156724
    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: November 15, 2012
    Date of Patent: October 13, 2015
    Assignee: Corning Incorporated
    Inventor: Timothy Michael Gross
  • Patent number: 9096460
    Abstract: A lithium aluminosilicate glass and a method for producing such lithium aluminosilicate glass are provided. The glass has a composition, in mol %, of: SiO2 60-70; Al2O3 10-13; B2O3 0.0-0.9; Li2O 9.6-11.6; Na2O 8.2-less than 10; K2O 0.0-0.7; MgO 0.0-0.2; CaO 0.2-2.3; ZnO 0.0-0.4; ZrO2 1.3-2.6; P2O5 0.0-0.5; Fe2O3 0.003-0.100; SnO2 0.0-0.3; and CeO2 0.004-0.200. Further, the composition complies with the following relations and conditions: (Li2O+Al2O3)/(Na2O+K2O) greater than 2; Li2O/(Li2O+Na2O+K2O) greater than 0.47 and less than 0.70; CaO+Fe2O3+ZnO+P2O5+B2O3+CeO2 greater that 0.8 and less than 3, where at least four out of the six oxides are included. The glass exhibits a modulus of elasticity of at least 82 GPa and has a glass transition point below 540° C. and/or a working point below 1150° C.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: August 4, 2015
    Assignee: SCHOTT AG
    Inventors: Peter Brix, Wolfram Beier, Jochen Alkemper
  • Patent number: 9045362
    Abstract: A glass, glass-ceramic, or ceramic bead is described, with an internal porous scaffold microstructure that is surrounded by an amorphous shield. The shield serves to protect the internal porous microstructure of the shield while increasing the overall strength of the porous microstructure and improve the flowability of the beads either by themselves or in devices such as biologically degradable putty that would be used in bone or soft tissue augmentation or regeneration. The open porosity present inside the bead will allow for enhanced degradability in-vivo as compared to solid particles or spheres and also promote the growth of tissues including but not limited to all types of bone, soft tissue, blood vessels, and nerves.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 2, 2015
    Assignee: MOSCI CORP.
    Inventor: Steven Jung
  • Publication number: 20150147575
    Abstract: Alkali aluminosilicate glasses that are ion exchangeable to high compressive stresses, have fast ion exchange kinetics, and high intrinsic damage resistance. The glasses achieve all of the above desired properties either with only small amounts of P2O5 (<1 mol %) or without addition of any P2O5.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 28, 2015
    Inventors: Matthew John Dejneka, John Christopher Mauro
  • 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
  • Publication number: 20150140336
    Abstract: A white glass contains, in terms of mole percentage on the basis of the following oxides, from 50 to 80% of SiO2, from 0 to 10% of Al2O3, from 11 to 30% of MgO, from 0 to 15% of Na2O and from 0.5 to 15% of P2O5.
    Type: Application
    Filed: January 23, 2015
    Publication date: May 21, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takahiro SAKAGAMI, Seiki OHARA, Junko MIYASAKA, Hiroyuki HIJIYA, Kazutaka ONO
  • Patent number: 9034779
    Abstract: Provided is an optical glass that has desired optical properties, superior resistance to devitrification, and superior mass productivity. An optical glass is made of a SiO2—Nb2O5—TiO2-based glass having a refractive index (nd) of 1.75 to 1.95 and an Abbe's number (?d) of 15 to 35 and has an operation temperature range (?T=(temperature at 100.5 poise)?(liquidus temperature)) of 20° C. or more. The optical glass preferably contains, in percent by mass, 15% to 45% SiO2, 15% to 40% (but excluding 40%) Nb2O5 and 1% to 30% TiO2 as glass components.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: May 19, 2015
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventor: Fumio Sato
  • Patent number: 8987155
    Abstract: This disclosure is directed to a silica-titania-niobia glass and to a method for making the glass. The composition of the silica-titania-niobia (SiO2—TiO2—Nb2O5) glass, determined as the oxides, is Nb2O5 in an amount in the range of 0.005 wt. % to 1.2 wt. %, TiO2 in an amount in the range of 5 wt. % to 10 wt. %, and the remainder of glass is SiO2. In the method, the STN glass precursor is consolidated into a glass by heating to a temperature of 1600° C. to 1700° C. in flowing helium for 6 hours to 10 hours. When this temperature is reached, the helium flow can be replaced by argon for the remainder of the time. Subsequently the glass is cooled to approximately 1050° C., and then from 1050° C. to 700° C. followed by turning off the furnace and cooling the glass to room temperature at the natural cooling rate of the furnace.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 24, 2015
    Assignee: Corning Incorporated
    Inventors: Sezhian Annamalai, Steven Bruce Dawes, Kenneth Edward Hrdina
  • 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
  • Publication number: 20150064474
    Abstract: Glass-ceramics and precursor glasses that are crystallizable to glass-ceramics are disclosed. The glass-ceramics of one or more embodiments include rutile, anatase, armalcolite or a combination thereof as the predominant crystalline phase. Such glasses and glass-ceramics may include compositions of, in mole %: SiO2 in the range from about 45 to about 75; Al2O3 in the range from about 4 to about 25; P2O5 in the range from about 0 to about 10; MgO in the range from about 0 to about 8; R2O in the range from about 0 to about 33; ZnO in the range from about 0 to about 8; ZrO2 in the range from about 0 to about 4; B2O3 in the range from about 0 to about 12, and one or more nucleating agents in the range from about 0.5 to about 12. In some glass-ceramic articles, the total crystalline phase includes up to 20% by weight of the glass-ceramic article.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventors: Matthew John Dejneka, Qiang Fu, Timothy Michael Gross, Xiaoju Guo, Sumalee Likitvanichkul, John Christopher Mauro
  • Publication number: 20150065329
    Abstract: The invention introduces new glasses, and new methods for making glass, glass-ceramics, and/or ceramic articles from inorganic compounds extracted from organic waste streams, including food waste streams, agricultural waste streams, and other organic waste streams with high inorganic oxide content. The organic waste stream can also be extended to human and animal wastes. These glasses will have the same, or improved physical, chemical, and mechanical properties as glasses made from mined minerals, however, the methodology disclosed in this invention will produce a renewable and sustainable inorganic product manufactured from organic waste streams.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 5, 2015
    Inventors: Ivan A. Cornejo, Ivar E. Reimanis, Subramanian Ramalingam
  • Publication number: 20150064473
    Abstract: Ion exchangeable glasses containing SiO2, Al2O3, Na2O, MgO, B2O3, and P2O5 are provided. The compressive stresses of these ion exchanged glasses are greater than 900 megapascals (MPa) at a depth of 45 or 50 microns (?m) with some glasses exhibiting a compressive stress of at least 1 gigaPascals (GPa). The ion exchange rates of these glasses are much faster than those of other alkali aluminosilicate glasses and the ion exchanged glass is resistant damage to impact damage. A method of ion exchanging the glass is also provided.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 5, 2015
    Inventors: Matthew John Dejneka, Sinue Gomez, Timothy Micheal Gross, Xiaoju Guo
  • Publication number: 20150064472
    Abstract: Ion exchangeable glasses having coefficients of thermal expansion (CTE) at least about 90×10?7 ° C.?1. The glasses undergo rapid ion exchange, for example, in a molten KNO3 salt bath to a depth of layer of greater than 30 microns in less than 2 hours at temperatures of 370° C. to 390° C. When ion-exchanged to a depth of layer between 30 to 50 microns, the glasses exhibit a Vickers median/radial crack initiation threshold exceeding 30 kilograms force (kgf). The glasses are fusion formable and, in some embodiments, compatible with zircon.
    Type: Application
    Filed: August 22, 2014
    Publication date: March 5, 2015
    Inventors: Timothy Michael Gross, Xiaoju Guo
  • Patent number: 8902493
    Abstract: Various embodiments described herein comprise a laser and/or an amplifier system including a doped gain fiber having ytterbium ions in a phosphosilicate glass. Various embodiments described herein increase pump absorption to at least about 1000 dB/m-9000 dB/m. The use of these gain fibers provide for increased peak-powers and/or pulse energies. The various embodiments of the doped gain fiber having ytterbium ions in a phosphosilicate glass exhibit reduced photo-darkening levels compared to photo-darkening levels obtainable with equivalent doping levels of an ytterbium doped silica fiber.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: December 2, 2014
    Assignee: IMRA America, Inc.
    Inventors: Liang Dong, Martin E. Fermann, Hugh McKay, Libin Fu, Shigeru Suzuki
  • Patent number: 8889575
    Abstract: Ion exchangeable glass articles are disclosed. In one embodiment, a glass article formed from alkali aluminosilicate glass which may include Ga2O3, Al2O3, Na2O, SiO2, B2O3, P2O5 and various combinations thereof. The glass article may generally include about X mol % of Ga2O3 and about Z mol % of Al2O3, wherein 0?X?20, 0?Z?25 and 10?(X+Z)?25. The glass article may also include from about 5 mol % to about 35 mol % Na2O, SiO2 may be present in an amount from about 40 mol % to about 70 mol % SiO2. The glass article may further include Y mol % B2O3 where Y is from 0 to about 10. The glass article may further include (10-Y) mol % of P2O5. Glass articles formed according to the present invention may be ion-exchange strengthened. In addition, the glass articles may have a low liquid CTE which enables the glass articles to be readily formed into complex shapes.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 18, 2014
    Assignee: Corning Incorporated
    Inventors: Heather Debra Boek, Mark Owen Weller, Randall Eugene Youngman
  • Publication number: 20140335331
    Abstract: Alkali-free phosphoboroaluminosilicate glasses are provided. The glasses include the network formers SiO2, B2O3, and at least one of Al2O3 and P2O5. The glass may, in some embodiments, have a Young's modulus of less than about 78 GPa and/or a coefficient of thermal expansion, averaged over a temperature range from about 20° C. to about 300° C., of less than about 38×10?7/° C. The glass may be used as a cover glass for electronic devices or as an outer clad layer for a glass laminate.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 13, 2014
    Applicant: Corning Incorporated
    Inventors: Adam James Ellison, John Christopher Mauro, Natesan Venkataraman
  • Publication number: 20140308526
    Abstract: An ion exchangeable glass that is free of lithium and comprising 0.1-10 mol % P2O5 and at least 5 mol % Al2O3. The presence of P2O5 enables the glass to be ion exchanged more quickly and to a greater depth than comparable glasses that do not contain P2O5.
    Type: Application
    Filed: June 24, 2014
    Publication date: October 16, 2014
    Inventors: Christy Lynn Chapman, Matthew John Dejneka, Sinue Gomez, Lisa Ann Lamberson
  • Patent number: 8852764
    Abstract: To provide a substrate for information recording medium having various properties, in particular higher fracture toughness, required for application of the substrate for information recording medium of the next generation such as perpendicular magnetic recording system, etc. and a material with excellent workability for such purpose. A crystallized glass substrate for information recording medium, consisting of a crystallized glass which comprises one or more selected from RAl2O4 and R2TiO4 as a main crystal phase, in which R is one or more selected from Zn, Mg and Fe, and in which the main crystal phase has a crystal grain size in a range of from 0.5 nm to 20 nm, a degree of crystallinity of 15% or less, and a specific gravity of 3.00 or less.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: October 7, 2014
    Assignee: Ohara Inc.
    Inventors: Toshitaka Yagi, Naoyuki Goto
  • 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
  • Patent number: 8795702
    Abstract: This invention relates to methods for producing a composite bone graft material that can regenerate bony defects in the body. The invention further relates to methods that allow for the production of bioactive glass particles used in the composite that have been surface treated to allow for the production of a highly porous composite that can hold significant amounts of body fluid or other molecules that will aid in the regenerative process. The method of surface treatment allows for the manufacture of a suitable implantable composite while retaining the unique osteostimulative properties that are associated with bioactive glass particles.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: August 5, 2014
    Assignee: Novabone Products, LLC
    Inventors: David C. Greenspan, Srinivas Katta
  • Patent number: 8785339
    Abstract: An optical glass comprising, by mass %, 12 to 40% of SiO2, 15% or more but less than 42% of Nb2O5, 2% or more but less than 18% of TiO2, (provided that Nb2O5/TiO2 is over 0.6), 0.1 to 20% of Li2O, 0.1 to 15% of Na2O, and 0.1 to 25% of K2O, and having an Abbe's number ?d of 20 to 30, a ?Pg,F of 0.016 or less and a liquidus temperature of 1,200° C. or lower.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: July 22, 2014
    Assignee: Hoya Corporation
    Inventors: Xuelu Zou, Yoshio Nojima, Hiroki Takazawa
  • Patent number: 8765262
    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: November 15, 2012
    Date of Patent: July 1, 2014
    Assignee: Corning Incorporated
    Inventor: Timothy Michael Gross
  • Patent number: 8759238
    Abstract: An ion exchangeable glass that is free of lithium and comprising 0.1-10 mol % P2O5 and at least 5 mol % Al2O3. The presence of P2O5 enables the glass to be ion exchanged more quickly and to a greater depth than comparable glasses that do not contain P2O5.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 24, 2014
    Assignee: Corning Incorporated
    Inventors: Christy Lynn Chapman, Matthew John Dejneka, Sinue Gomez, Lisa Ann Lamberson
  • Publication number: 20140162863
    Abstract: Glasses are described which have characteristics that produce high visible transmittance, low solar transmittance, and high selectivity. The glasses can also preferably have a blue-green color. A number of advantageous formulations are described.
    Type: Application
    Filed: December 6, 2012
    Publication date: June 12, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Darryl J. Costin, Harold Haller, Clarence Martin, Yuki Kondo, Yuya Shimada, Jun Sasai
  • Publication number: 20140141285
    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: Application
    Filed: November 15, 2013
    Publication date: May 22, 2014
    Applicant: OHARA INC.
    Inventors: Kiyoyuki Momono, Katsuhiko Yamaguchi, Toshitaka Yagi, Naoyuki Goto
  • Publication number: 20140141960
    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: Application
    Filed: April 20, 2012
    Publication date: May 22, 2014
    Applicant: Straumann Holding AG
    Inventors: Maria Borczuch-Laczka, Katharzyna Cholewa-Kowalska, Karolina Laczka
  • Patent number: 8715625
    Abstract: A natural anhydrous oral care composition with a limited number of naturally-derived, naturally processed, generally regarded as safe (GRAS) ingredients including an effective amount of a bioactive glass is described. The topical application of the composition to human teeth cleanses, remineralizes and reduces plaque build-up on teeth.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 6, 2014
    Assignee: The Clorox Company
    Inventors: Karen Lee Rokitowski, Amy Tracy Hart, Celeste Anne Lutrario
  • Publication number: 20140106168
    Abstract: The X-ray-opaque glass, which is free of BaO and PbO except for at most impurities, has a refractive index nd of from 1.50 to 1.58 and a high X-ray opacity with an aluminium equivalent thickness of at least 300%. The glass is based on a SiO2—Al2O3—SrO—R2O system with additions of La2O3 and ZrO2. The glass has very good chemical resistance and can be used, in particular, as a dental glass or as an optical glass.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Inventors: Simone Monika Ritter, Sabine Pichler-Wilhelm, Carina Dobler, Stefanie Hansen
  • Publication number: 20140066286
    Abstract: This disclosure is directed to a silica-titania-niobia glass and to a method for making the glass. The composition of the silica-titania-niobia (SiO2—TiO2—Nb2O5) glass, determined as the oxides, is Nb2O5 in an amount in the range of 0.005 wt. % to 1.2 wt. %, TiO2 in an amount in the range of 5 wt. % to 10 wt. %, and the remainder of glass is SiO2. In the method, the STN glass precursor is consolidated into a glass by heating to a temperature of 1600° C. to 1700° C. in flowing helium for 6 hours to 10 hours. When this temperature is reached, the helium flow can be replaced by argon for the remainder of the time. Subsequently the glass is cooled to approximately 1050° C., and then from 1050° C. to 700° C. followed by turning off the furnace and cooling the glass to room temperature at the natural cooling rate of the furnace.
    Type: Application
    Filed: August 22, 2013
    Publication date: March 6, 2014
    Applicant: CORNING INCORPORATED
    Inventors: Sezhian Annamalai, Steven Bruce Dawes, Kenneth Edward Hrdina
  • Patent number: 8664133
    Abstract: An optical glass having optical constants of a refractive index (nd) of 1.78 or over, an Abbe number (?d) of 30 or below, and a partial dispersion ratio (?g, F) of 0.620 or below comprises SiO2 and Nb2O5 as essential components, wherein an amount of Nb2O5 in mass % is more than 40%. The optical glass further comprising, in mass % on oxide basis, less than 2% of K2O and one or more oxides selected from the group consisting of B2O3, TiO2, ZrO2, WO3, ZnO, SrO, Li2O and Na2O wherein a total amount of SiO2, B2O3, TiO2, ZrO2, Nb2O5, WO3, ZnO, SrO, Li2O and Na2O is more than 90% and TiO2/(ZrO2+Nb2O5) is less than 0.32.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: March 4, 2014
    Assignee: OHARA Inc.
    Inventor: Susumu Uehara
  • Publication number: 20140023865
    Abstract: According to one embodiment, a glass article may include SiO2, Al2O3, Li2O and Na2O. The glass article may have a softening point less than or equal to about 810° C. The glass article may also have a high temperature CTE less than or equal to about 27×10?6/° C. The glass article may also be ion exchangeable such that the glass has a compressive stress greater than or equal to about 600 MPa and a depth of layer greater than or equal to about 25 ?m after ion exchange in a salt bath comprising KNO3 at a temperature in a range from about 390° C. to about 450° C. for less than or equal to approximately 15 hours.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 23, 2014
    Inventors: Marie Jacqueline Monique Comte, Melinda Ann Drake, Karen Leslie Geisinger, Sinue Gomez, Robert Michael Morena, Charlene Marie Smith, Randall Eugene Youngman
  • Publication number: 20130288001
    Abstract: Provided is a tempered glass having a compression stress layer in a surface thereof, the tempered glass comprising, as a glass composition in terms of mol %, 45 to 75% of SiO2, 3 to 15% of Al2O3, 0 to 12% of Li2O, 0.3 to 20% of Na2O, 0 to 10% of K2O, and 1 to 15% of MgO+CaO, and having a molar ratio (Al2O3+Na2O+P2O5)/SiO2 of 0.1 to 1, a molar ratio (B2O3+Na2O)/SiO2 of 0.1 to 1, a molar ratio P2O5/SiO2 of 0 to 1, a molar ratio Al2O3/SiO2 of 0.01 to 1, and a molar ratio Na2O/Al2O3 of 0.1 to 5, wherein the surface is etched partially or entirely before tempering treatment.
    Type: Application
    Filed: January 16, 2012
    Publication date: October 31, 2013
    Inventors: Takashi Murata, Takako Tojyo
  • Patent number: 8536078
    Abstract: Lithium silicate glass ceramics and glasses containing at least 6.1 wt.-% ZrO2 are provided which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and forming a solid bond with the zirconium oxide ceramics.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 17, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Burke, Wolfram Holand, Volker Rheinberger
  • Publication number: 20130231236
    Abstract: The present invention relates to the glass substrate for an information recording medium comprising the following glass components: SiO2: 52 to 67; Al2O3: 8 to 20; B2O3: 0 to 6, with these three oxides FMO: 70 to 85; Li2O: 0.5 to 4; Na2O: 1 to 8; K2O: 0 to 5; and with these three oxides R2O: 5 to 15; MgO: 2 to 9; CaO: 0.1 to 5; BaO: 0 to 3; SrO: 0 to 3; ZnO: 0 to 5; and with these five oxides: 5 to 15; Y2O3: 0 to 4; La2O3: 0 to 4; Gd2O3: 0 to 4; CeO2: 0 to 4; TiO2: 1 to 7; HfO2: 0 to 2; ZrO2: 0 to 5; Nb2O5: 0.2 to 5; and Ta2O5: 0 to 5, and satisfies Li2O/R2O: 0.05 to 0.35; Li2O/FMO: 0.005 to 0.035; Li2O/(MgO+ZnO): less than 2 and Nb2O5/SiO2: 0.01 to 0.075.
    Type: Application
    Filed: June 21, 2011
    Publication date: September 5, 2013
    Applicant: Konica Minolta Advanced Layers, Inc.
    Inventors: Hideki Kawai, Hiroshi Kajita, Akio Oogaki, Toshiharu Mori
  • Patent number: 8518565
    Abstract: A glass substrate for information recording medium, said glass substrate being composed of an aluminosilicate glass containing 60-75% by mass of SiO2, 5-18% by mass of Al2O3, 3-10% by mass of Li2O, 3-15% by mass of Na2O and 0.5-8% by mass of ZrO2 relative to the entire glass components. The glass substrate for information recording medium contains neither As (arsenic) nor Sb (antimony), while containing at least one polyvalent element selected from the group consisting of V (vanadium), Mn (manganese), Ni (nickel), Nb (niobium), Mo (molybdenum), Sn (tin), Ce (cerium), Ta (tantalum) and Bi (bismuth). The molar ratio of the total amount of the polyvalent elements to the amount of Al2O3 is within the range of 0.02-0.20.
    Type: Grant
    Filed: July 3, 2009
    Date of Patent: August 27, 2013
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Hideki Kawai
  • Publication number: 20130189486
    Abstract: A thin lithium-aluminosilicate glass is provided. The glass is suitable for three dimensional precision molding and suitable for toughening, wherein after toughening, the glass has a center tension smaller than 50 Mpa, a surface compressive stress of 600-1200 Mpa, and a bending strength of up to 500 MPa. The glass also has a transition point lower than 550° C.
    Type: Application
    Filed: February 22, 2011
    Publication date: July 25, 2013
    Applicant: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO., LTD.
    Inventors: Chong Wang, José Zimmer, Feng He, Gerhard Lautenschlaeger, Armin Vogl
  • Publication number: 20130186140
    Abstract: A lithium aluminosilicate glass and a method for producing such lithium aluminosilicate glass are provided. The glass has a composition, in mol %, of: SiO2 60-70; Al2O3 10-13; B2O3 0.0-0.9; Li2O 9.6-11.6; Na2O 8.2-less than 10; K2O 0.0-0.7; MgO 0.0-0.2; CaO 0.2-2.3; ZnO 0.0-0.4; ZrO2 1.3-2.6; P2O5 0.0-0.5; Fe2O3 0.003-0.100; SnO2 0.0-0.3; and CeO2 0.004-0.200. Further, the composition complies with the following relations and conditions: (Li2O+Al2O3)/(Na2O+K2O) greater than 2; Li2O/(Li2O+Na2O+K2O) greater than 0.47 and less than 0.70; CaO+Fe2O3+ZnO+P2O5+B2O3+CeO2 greater that 0.8 and less than 3, where at least four out of the six oxides are included. The glass exhibits a modulus of elasticity of at least 82 GPa and has a glass transition point below 540° C. and/or a working point below 1150° C.
    Type: Application
    Filed: February 25, 2011
    Publication date: July 25, 2013
    Applicant: SCHOTT AG
    Inventors: Peter Brix, Wolfram Beier, Jochen Alkemper