By Molten Glass Comminuting Patents (Class 65/21.2)
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Patent number: 11130699Abstract: The present disclosure is directed to glass spheroids and methods of making these spheroids that have significantly increased resilience to applied pressure and surface scratching. In addition, the present disclosure is directed to tailless Prince Rupert's Drops and methods of making tailless Prince Rupert's Drops.Type: GrantFiled: October 10, 2018Date of Patent: September 28, 2021Inventor: William J. Hurley
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Publication number: 20150060919Abstract: A composite particle comprises inorganic compound particles that are derived from inorganic particle and are uniformly dispersed and sintered in a matrix phase composed of silica, or comprises silica particles that are uniformly dispersed and sintered in a matrix phase composed of said inorganic compound particles. The composite particle is prepared by sintering a mixture of (1) finely powdered silica having a BET specific surface area of 50 m2/g or greater, (2) an inorganic particle other than silica and (3) water at a temperature of 300° C. or higher to form a glass-like substance, and then crushing the glass-like substance. A spherical composite particle is prepared by melting and spheroidizing the mixture of (1)-(3) in a flame of 1,800° C. or higher.Type: ApplicationFiled: August 6, 2014Publication date: March 5, 2015Applicant: Shin-Etsu Chemical Co. Ltd.Inventors: Toshio SHIOBARA, Yoshihiro Tsutsumi
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Publication number: 20130263523Abstract: The present invention relates to a fused ceramic particle having the following chemical composition, as weight percentages based on the oxides, and for a total of 100%: ZrO2+HfO2: balance to 100%; 5.0%<SiO2<32.0%; 2.0%<La2O3<15.0%; 2.5%<Y2O3<11.0%; 0.5%<Al2O3<8.0%; and less than 1.0% of other oxides. Use in particular as a grinding agent, an agent for dispersion in a wet medium, a supporting agent, a heat-exchange agent, or for the treatment of surfaces.Type: ApplicationFiled: October 28, 2011Publication date: October 10, 2013Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Samuel Marlin, Michela Valentini
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Publication number: 20130129802Abstract: A method for manufacturing glass flakes by a rotary method includes the steps of using slow fed impact millers and multiple passings through opposed jet mills to achieve a low mean thickness deviation. The glass flakes, which may be used in cosmetic formulations, have a thickness of less than 500 nm, a particle size of 5-100 microns and a mean thickness deviation of less than 75 nm.Type: ApplicationFiled: July 6, 2011Publication date: May 23, 2013Inventor: Simon James Brigham
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Patent number: 8291727Abstract: A method and apparatus for manufacturing ceramic microspheres from industrial slag. The microspheres have a particle size of about 38 microns to about 150 microns. The microspheres are used to create a cement slurry having a density of at least about 11 lbs/g. The resultant cement slurry may then be used to treat subterranean wells.Type: GrantFiled: December 17, 2010Date of Patent: October 23, 2012Assignee: Intevep, S.A.Inventors: George Quercia, Yibran Perera, Aiskely Blanco, Fedymar Pereira
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Publication number: 20120175558Abstract: The invention relates to a process for preparing porous glass particles suitable for use as precursor materials for production of an opto-ceramic element. The process comprises: providing particles of a soluble glass composition comprising at least one soluble component, at least one component having low solubility in an aqueous solution, and at least one lasing dopant which also has a low solubility in the aqueous solution; and immersing the particles in an aqueous solution having low solubility for said at least one component and said at least one lasing dopant, to thereby dissolve substantially all of the soluble portions of the glass particles.Type: ApplicationFiled: July 25, 2007Publication date: July 12, 2012Inventors: Samuel David Conzone, Carol Click
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Publication number: 20120144863Abstract: To provide a process for producing granules of glass raw materials which have excellent strength and are less likely to form fine powder even when pneumatically conveyed to an in-flight heating apparatus and which are suitable for use in the production of glass by an in-flight melting method, and a process for producing a glass product, whereby high quality glass having a uniform composition can be obtained. A process for producing glass raw material granules for producing a borosilicate glass, which comprises a step of preparing a raw material slurry comprising glass raw materials including boric acid, and a liquid medium in which boric acid is soluble, wherein the amount of boric acid in the raw material slurry is from 5 to 30 mass % to the solid content of the raw material slurry, and the pH of the raw material slurry is at least 6.6, and a step of producing glass material granules from the raw material slurry by a spray drying granulation method.Type: ApplicationFiled: February 17, 2012Publication date: June 14, 2012Applicant: Asahi Glass Company, LimitedInventors: Nobuhiro Shinohara, Hitoshi Onoda
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Patent number: 7905115Abstract: The invention relates to glass powder, especially a biologically active glass powder, which includes a plurality of glass particles and which is characterized by the following features: the glass particles are made up by >90% of non-spherical particles; the geometry of the individual non-spherical particle is characterized by a ratio of length to diameter of 1.1 to 105.Type: GrantFiled: December 21, 2005Date of Patent: March 15, 2011Assignee: Schott AGInventors: Guido Räke, Hildegard Römer, Peter Schreckenberg, Josè Zimmer, Frank Büllesfeld, Jörg Fechner, Cevin Czisch, Udo Fritsching
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Patent number: 7884055Abstract: A method and apparatus for manufacturing ceramic microspheres from industrial slag. The microspheres have a particle size of about 38 microns to about 150 microns. The microspheres are used to create a cement slurry having a density of at least about 11 lbs/g. The resultant cement slurry may then be used to treat subterranean wells.Type: GrantFiled: December 4, 2008Date of Patent: February 8, 2011Assignee: Intevep, S.A.Inventors: George Quercia, Yibran Perera, Aiskely Blanco, Fedymar Pereira
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Patent number: 7858148Abstract: Artificial turf for use with an artificial turf system, which may also include a base layer and a support layer. The artificial turf comprising a backing supporting pile tufts of between ¼? to 4? in length, in position on its upper surface. The backing may comprise a porous synthetic foam or backing sheet. A filler of particles shaped to have no sharp edges and of substantially equal size are interspersed over the backing and about the tufts up to at least half thick length. The artificial turf substantially retains its resiliency, porosity and equal density throughout.Type: GrantFiled: March 5, 2007Date of Patent: December 28, 2010Assignee: USGreentech, L.L.C.Inventor: Randolph S. Reddick
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Patent number: 7795164Abstract: The present invention relates to a dental glass containing 50 to 70 wt. % of SiO2, 5 to 18 wt. % of Al2O3, 6.1 to 30 wt. % of MgO, 1 to 15 wt. % of La2O3, 1 to 15 wt. % of WO3, 0.1 to 8 wt. % of ZrO2, and optionally further oxides except for the oxides of Sr, Ba or alkali metals, wherein the stated quantities in total add up to 100 wt. %.Type: GrantFiled: September 25, 2006Date of Patent: September 14, 2010Assignees: Ivoclar Vivadent AG, Empa DubendorfInventors: Christian Ritzberger, Volker Rheinberger, Elke Apel, Peter Burtscher, Wolfram Höland, Thomas Graule, Simone Zürcher, Andri Vital
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Patent number: 7730746Abstract: Apparatus to eject on demand discrete hollow microsphere droplets that are characterized by a highly regular and predictable spherical shape, devoid of tails or other irregularities common in the prior art with a selected pure gas contained in the center. With this method and apparatus, droplets may be formed of any suitable material including glass, ceramic, plastic, or metal. A variety of gases at various pressures including complete vacuums may be contained in the hollow microsphere. Microspheres filled with ionizable gas may be used as pixels in a plasma display panel. Microspheres used as a pixel elements may be referred to as Plasma-spheres. The inside of each Plasma-sphere may contain a luminescent material such as a phosphor and/or a secondary electron emission material such as magnesium oxide or a rare earth oxide introduced during the gas filling of the microsphere.Type: GrantFiled: July 10, 2006Date of Patent: June 8, 2010Assignee: Imaging Systems TechnologyInventors: Thomas J. Pavliscak, Carol Ann Wedding
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Publication number: 20090025425Abstract: The invention relates to a process and apparatus for forming a particulate composition, especially a particle glass composition, through the use of shock waves. A nozzle element is utilized having inlets for introduction of cold and heated gas and a delivery tube for introducing molten material. Through the introduction of the cold and heated gases, droplets are formed from a molten stream, a cone-shaped standing shock wave is formed, and shock waves are formed via a modified Hartmann-Sprenger chamber, the shock waves impinging on the droplet stream to break up the larger droplets.Type: ApplicationFiled: July 25, 2007Publication date: January 29, 2009Inventors: Carsten Weinhold, David John Yuhas
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Publication number: 20090023574Abstract: The invention relates to dental glass-ceramics and a process for producing them and their use, with these comprising at least one crystal phase containing xenotime or monazite or mixtures thereof.Type: ApplicationFiled: May 31, 2006Publication date: January 22, 2009Applicant: Ivoclar Vivadent AGInventors: Wolfram Holand, Christian Ritzberger, Volker Rheinberger, Elke Apel
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Patent number: 7328594Abstract: A process for stably and efficiently producing quality glass articles such as preforms at high yields, and a process for producing an optical device from the preform obtained by the above process. In the process for producing a glass article, molten glass gobs having a predetermined weight each are poured, or molten glass drops having a predetermined weight each are dropped through a nozzle, into a boiling liquid having a boiling point lower than the class transition temperature of the glass constituting said glass article or a liquid which is temperature-adjusted beforehand so as to be caused to boil by the amount of heat of the glass, to form glass articles.Type: GrantFiled: December 12, 2002Date of Patent: February 12, 2008Assignee: Hoya CorporationInventors: Akira Murakami, Katsumi Utsugi, Yoshinori Iguchi, Masahiro Yoshida, Yoshikane Shinkuma, Atsushi Watabe
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Patent number: 7240520Abstract: In a process for pulverizing and granulating melts, especially oxidic slag, glass, or thermoplastic melts, in which the melts are heated with burner (6) in an antechamber (5) and ejected as a shroud surrounding a propellant stream into a granulating chamber (11), hot combustion gases from the antechamber (5) are mixed with the propellant stream.Type: GrantFiled: August 27, 2003Date of Patent: July 10, 2007Assignee: Holcim Ltd.Inventor: Alfred Edlinger
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Patent number: 7093463Abstract: A method for producing powders that consist of substantially spherical particles from a material such as glass, ceramics or plastic that produces a highly viscous melt that solidifies at a glass transition temperature Tg or at a solidification temperature Ts. The inventive method comprises the following steps: (a) producing a melt of a viscosity ? in the range of from 0.1 to 100 Ns/m2; (b) atomizing the melt using a first gas, the first gas having a temperature TA?Tg or ?0.5Ts at the outlet of the nozzle and (c) cooling off the particles produced by atomization in a cooling section downstream of the nozzle using a coolant, the temperature of the coolant being smaller than Ts or Tg.Type: GrantFiled: October 9, 2000Date of Patent: August 22, 2006Assignee: Applikations-und Technikzentrum fur Energieverfahrens-Umwelt-und Stromungstechnik (ATZ-EVUS)Inventors: Gerhard Wolf, Andreas Emmel
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Patent number: 6802189Abstract: A process for the remelting of glass bars, including the steps of introducing a glass bar into an upper end of a receiving shell; providing a molten bath having a surface underneath the receiving-shell; positioning the receiving shell such that a lower edge of the receiving shell is located at the height of the surface or above it; heating a lower end of the glass bar to a temperature above a softening temperature of the glass, resulting in a melt-off process at the lower end of the glass bar to produce a melt stream; controlling the melt-off process such that the melt stream continuously enters the molten bath proximate the surface with avoidance of a constriction; and drawing off melt from the molten bath by means of an arrangement for drop generation.Type: GrantFiled: December 27, 2000Date of Patent: October 12, 2004Assignee: Schott GlasInventors: Andreas Langsdorf, Hildegard Römer, Paul Kissl
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Publication number: 20040148967Abstract: Method for making ceramic particles. Embodiments of ceramic particles made according to the present invention can be are particularly useful as abrasive particles.Type: ApplicationFiled: February 5, 2003Publication date: August 5, 2004Applicant: 3M Innovative Properties CompanyInventors: Ahmet Celikkaya, Thomas J. Anderson
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Publication number: 20040050106Abstract: Disclosed is a process of producing glass materials wherein outgassing materials are mixed, melted, outgassed and formed into frits, and the frits are then mixed with essentially non-outgassing materials and melted to form the glass. Because the frits are already outgassed, lass gas is generated in the final glass melting step, thus foaming and scum forming are reduced. As a result, heat transfer efficiency in the glass furnace is improved and lower melting temperature is achieved. The process can be carried out in any type of glass furnaces and is particularly suitable for high silica glass compositions.Type: ApplicationFiled: August 29, 2002Publication date: March 18, 2004Inventor: Rand A. Murnane
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Patent number: 6606884Abstract: High-strength sinterable lithium disilicate glass ceramics are described which can be further processed in particular by pressing in the viscous state to shaped dental products.Type: GrantFiled: October 22, 2001Date of Patent: August 19, 2003Assignee: Ivoclar AGInventors: Marcel Schweiger, Martin Frank, Volker Rheinberger, Wolfram Hoeland
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Publication number: 20030131628Abstract: A process for stably and efficiently producing quality glass articles such as preforms at high yields, and a process for producing an optical device from the preform obtained by the above process.Type: ApplicationFiled: December 12, 2002Publication date: July 17, 2003Inventors: Akira Murakami, Katsumi Utsugi, Yoshinori Iguchi, Masahiro Yoshida, Yoshikane Shinkuma, Atsushi Watabe
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Patent number: 6579479Abstract: The invention includes a method of forming a plurality of spheres. A passageway is provided, and the passageway terminates in an orifice. A liquid is flowed through the passageway and expelled through the orifice to form drops. The drops are then passed through a fluid to cool and solidify the drops into a plurality of spheres. At least some of the spheres are collected. A pressure of the liquid is maintained within about ±10% of a value during the formation of the drops that are cooled into the collected spheres. The invention also includes a plurality of at least several hundred spheres having a diameter of less than about 0.05 inches and characterized by at least 95% of the spheres being within ±1.3% of a mean diameter of the spheres.Type: GrantFiled: November 9, 2000Date of Patent: June 17, 2003Assignee: Honeywell International Inc.Inventors: Colin Edie, David B. Keno, Christopher L. Parfeniuk
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Publication number: 20030083187Abstract: Glass produced on basis of a raw material in form of a mixture of mainly mineral-containing components comprising sludge from e.g. purification plants and waste products from the industry, and having a determined chemical composition adjusted on basis of knowledge of the chemical composition of the mineral-containing components forming part of the glass. The glass is produced from the raw material which after mineralization is pressed into briquettes that are hardened and subsequently melted in e.g. a blast furnace under oxygen supply, and where the melt is quenched and dried. Large amounts of waste products and waste substances that are normally deposited either treated or untreated can be reused and utilized at production of the glass.Type: ApplicationFiled: June 4, 2002Publication date: May 1, 2003Inventors: Martin Juul, Erling Fundal
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Patent number: 6499316Abstract: In a method of producing a glass gob by continuously dropping a molten glass 9 from a nozzle 2 in a dropping direction, a gas flow 20 is caused to continuously flow in the dropping direction along an outer peripheral surface of the nozzle 2 at a predetermined flow rate. The gas flow 20 applies a wind pressure to the molten glass 9 appearing from a nozzle end 2a of the nozzle 2 to drop the molten glass 9.Type: GrantFiled: October 5, 2001Date of Patent: December 31, 2002Assignee: Hoya CorporationInventors: Atsushi Uezaki, Katsumi Utsugi, Junichi Watanabe
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Patent number: 6336346Abstract: A synthetic silicate pellet is provided having a component(s) of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch component.Type: GrantFiled: February 21, 2001Date of Patent: January 8, 2002Assignee: Minerals Technologies Inc.Inventors: Gary Peter Tomaino, John Albert Hockman
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Process of producing a glassy product for multiple applications and products obtained by the process
Patent number: 6223560Abstract: A process for recycling trash and obtaining a glassy vitreous product by mixing trash with a vitrifying composition comprising 30% Sodium Sulphate, 7% Quartz, 20% Calcium Carbonate, 23% Sodium Carbonate, 13% Organic Sulphate (consisting of 20% Sodium Sulphate and 80% Carbon Hydrates) and 7% Calcium Fluor, the composition comprising the 10-20 weight percentage of the mixture and thermochemically transforming the mixture, the product being used in multiple applications. The glassy product obtained by the process is also provided by the invention.Type: GrantFiled: November 12, 1999Date of Patent: May 1, 2001Assignee: Cerocon S.A.Inventors: Roberto Girotti, Luis Domingo Tatasciore -
Patent number: 6200137Abstract: An apatite glass ceramic is described which is characterized by good chemical stability, a low expansion coefficient and high translucence, and is particularly suitable, by itself or together with glasses or other glass ceramics, as a veneering material for ceramic dental restorations.Type: GrantFiled: June 12, 1998Date of Patent: March 13, 2001Assignee: Ivoclar AGInventors: Wolfram Höland, Martin Frank, Helga Drescher, Volker Rheinberger