With Forming Glass From Molten State, With Treatment Of Molten Glass, Or With Drawing Of Glass In Softened State Patents (Class 65/32.5)
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Patent number: 7171827Abstract: In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature above the melting temperature of the infrared glass, and a casting chamber operable to fill the mold with molten infrared glass. The method includes heating a mold in a mold chamber to a temperature above the melting temperature of infrared glass, casting molten infrared glass into the mold in a casting chamber; and cooling the mold to a temperature below the glass transition temperature of the infrared glass.Type: GrantFiled: April 15, 2003Date of Patent: February 6, 2007Assignee: Umicore SAInventors: William David Autery, Gregory Stewart Tyber, Donald Bryan Christian, Allan Leroy Buehler, Athanasios John Syllaios
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Patent number: 7155934Abstract: The method of making borosilicate glass with a surface having reactive SiOH groups on it includes preparing a borosilicate glass melt and dissolving at least 30 mMol per liter of water in the borosilicate glass melt. The borosilicate glass contains from 70 to 87 percent by weight, SiO2; from 7 to 15 percent by weight, B2O3; from 0 to 8 percent by weight, Al2O3; from 0 to 8 percent by weight, Na2O and from 0 to 8 percent by weight of K2O. The borosilicate glass with the easily modified reactive surface can be used as a substrate for chemically covalent immobilization of reactive substances. This substrate can be used to make a biochemical chip, such as a DNA or gene chip, or dirt-proof window glass.Type: GrantFiled: November 18, 2002Date of Patent: January 2, 2007Assignee: Schott AGInventors: Gerhard Lauten-Schlaeger, Thomas Kloss, Sandra Von Fintel, Klaus Schneider
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Patent number: 7104090Abstract: Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. The method involves forming a polarizing layer on the surface of the glass article by ion-exchanging silver or copper into the surface.Type: GrantFiled: January 24, 2002Date of Patent: September 12, 2006Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, Donald M. Trotter, Jr.
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Patent number: 7000432Abstract: A process for producing a glass for cathode ray tubes, having a Sb2O3 content of from 0 to 0.19% as represented by mass percentage and containing H2O, which process comprises a step of melting a raw material in an atmosphere under a pressure of P0 to obtain a molten glass, and a step of vacuum degassing the molten glass in an atmosphere under a pressure PA which is lower than P0, wherein the pressure P of the molten glass is made to be at most (6.1 W+0.06) atm in the vacuum degassing step, wherein W is the content of said H2O as represented by mass percentage.Type: GrantFiled: March 7, 2002Date of Patent: February 21, 2006Assignee: Asahi Glass Company, LimitedInventors: Hajime Itoh, Rei Kitamura, Mitsuyoshi Sakai, Keito Sekine, Misao Okada
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Patent number: 6912087Abstract: A method for making a polarizing glass article is provided. The method includes first providing a precursor glass containing metal-halide particles. The precursor glass may be encased in a gas-permeable medium. Then, form at least a first polarizing layer and a non-polarizing region in the precursor glass. Bond the polarizing layer to a substrate and removing the non-polarizing region to expose the polarizing layer. Then, separate the first polarizing layer from the substrate to produce an ultra-thin polarizing glass article measuring less than or equal to about 200 ?m in thickness. The method may further comprise cutting the polarizing layer into wafers.Type: GrantFiled: April 6, 1999Date of Patent: June 28, 2005Assignee: Corning IncorporatedInventors: Nicholas F. Borrelli, David G. Grossman, Larry G. Mann, Jeanne M. Mordarski
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Publication number: 20040206122Abstract: In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature above the melting temperature of the infrared glass, and a casting chamber operable to fill the mold with molten infrared glass. The method includes heating a mold in a mold chamber to a temperature above the melting temperature of infrared glass, casting molten infrared glass into the mold in a casting chamber; and cooling the mold to a temperature below the glass transition temperature of the infrared glass.Type: ApplicationFiled: April 15, 2003Publication date: October 21, 2004Applicant: RAYTHEON COMPANYInventors: William David Autery, Gregory Stewart Tyber, Donald Bryan Christian, Allan Leroy Buehler, Athanasios John Syllaios
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Publication number: 20040206119Abstract: A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide glass constituents during a glass formation reaction, a stirring rod operable to mix the contents of the reaction container, a thermocouple operable to measure the temperature inside the reaction container, and a reaction chamber operable to hold the reaction container. The method includes placing chalcogenide glass constituents in a reaction container, heating the chalcogenide glass constituents above the melting point of at least one of the constituents, promoting dissolving or reaction of the other constituents, stirring the reaction melt, maintaining an overpressure of at least one atmosphere over the reaction melt, and cooling the reaction melt to below the chalcogenide glass transition temperature.Type: ApplicationFiled: April 15, 2003Publication date: October 21, 2004Applicant: RAYTHEON COMPANYInventors: Athanasios John Syllaios, William David Autery, Gregory Stewart Tyber, Marissa Marie Barnard, Donald Bryan Christian, Allan Leroy Buehler, Andre Deon Walker
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Patent number: 6799440Abstract: A silica deposition tube is fused in a deuterium (D2) gas atmosphere and optionally baked in a deuterium (D2) gas atmosphere to substantially reduce the hydrogen content in the tube for decreased fiber attenuation. Alternatively, raw silica material is pre-treated in D2 gas followed by fusing of the raw silica tube in a D2 gas environment.Type: GrantFiled: February 22, 2002Date of Patent: October 5, 2004Assignee: General Electric CompanyInventors: Larry Q. Zeng, Victor L. Lou, Frederic F. Ahlgren, Anil Raj Duggal
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Publication number: 20040134232Abstract: A method of manufacturing a glass substrate for a storage medium by pressing a glass material between an upper and a lower dies. The method includes a heating step of heating the glass material arranged between the upper and lower dies, a pressing step of pressing the heated glass material via the upper and lower dies, and a cooling step of having, after the pressing step, a cooling member contact the upper and lower dies to cool them together with the molded glass material arranged between the upper and lower dies. During the heating step and the pressing step, a vacuum atmosphere is maintained in a space containing the dies and the glass material. When the pressing step has completed, an inert gas is filled in the space to set a pressure in the space equal to an ambient pressure.Type: ApplicationFiled: December 3, 2003Publication date: July 15, 2004Applicants: Fuji Electric Device Technology Co., Ltd., MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Kengo Kainuma, Tatsumi Kawata, Kunio Hibino, Tomokazu Tokunaga
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Patent number: 6724967Abstract: A method is disclosed for making a device having one or more deposited layers and subject to a post deposition high temperature anneal. Opposing films having similar mechanical properties are deposited on the front and back faces of a wafer, which is subsequently subjected a high temperature anneal. The opposing films tend to cancel out stress-induced warping of the wafer during the subsequent anneal.Type: GrantFiled: March 7, 2001Date of Patent: April 20, 2004Assignee: Dalsa Semiconductor Inc.Inventors: Luc Ouellet, Annie Dallaire
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Publication number: 20030202245Abstract: Polarizing glass articles and methods of manufacturing polarizing glass articles are disclosed. Optical isolators using the polarizing glass articles have reduced coupling and surface losses when compared with conventional optical isolators.Type: ApplicationFiled: March 27, 2003Publication date: October 30, 2003Inventors: Nicholas F. Borrelli, Donald M. Trotter
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Publication number: 20030159467Abstract: Disclosed is a method of manufacturing glass optical elements such as optical lenses by press molding. Glass optical elements of high surface precision are manufactured while preventing fusion between the pressing mold and the glass material and deterioration of the pressing mold. The method comprises supplying a glass material to a pressing mold, and press molding the glass material with the pressing mold in a non-oxidizing atmosphere and the pressing mold comprises a carbon film formed by sputtering on at least a molding surface, and the glass material comprises a carbon layer on a surface thereof. The method further comprises feeding of the glass material by dropping it onto the molding surface of a lower mold while preventing variation in the thickness of the glass optical elements.Type: ApplicationFiled: February 19, 2003Publication date: August 28, 2003Applicant: HOYA CORPORATIONInventors: Shinichiro Hirota, Hiroyuki Sakai, Takeshi Takahashi
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Publication number: 20030159468Abstract: A silica deposition tube is fused in a deuterium (D2) gas atmosphere and optionally baked in a deuterium (D2) gas atmosphere to substantially reduce the hydrogen content in the tube for decreased fiber attenuation. Alternatively, raw silica material is pre-treated in D2 gas followed by fusing of the raw silica tube in a D2 gas environment.Type: ApplicationFiled: February 22, 2002Publication date: August 28, 2003Applicant: GENERAL ELECTRIC COMPANYInventors: Larry Q. Zeng, Victor L. Lou, Frederic F. Ahlgren, Anil Raj Duggal
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Patent number: 6606885Abstract: A glass polarizer and a method of making the polarizer, the polarizer being produced from an R2O—Al2O3—B2O3—SiO2 glass containing limited amounts of ZrO2 and TiO2, and having a silver halide liquidus temperature and a rutile liquidus temperature, both temperatures being not over 995° C.Type: GrantFiled: October 9, 2001Date of Patent: August 19, 2003Assignee: Corning IncorporatedInventors: Michael D. Harris, Thomas G. Havens, William E. Horsfall, David J. Kerko
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Patent number: 6588231Abstract: A mold has a moling surface of a material containing silicon carbide and/or silicon nitride as a main component and a carbon thin film formed on the molding surface to prevent fusion sticking. A glass substance which has a sag point not higher than 565° C. and a predetermined composition free from arsenic oxide is introduced into the mold. The glass substance is press-formed in a heated and softened condition into a glass optical element of high precision.Type: GrantFiled: November 12, 1999Date of Patent: July 8, 2003Assignee: Hoya CorporationInventors: Shin-Ichiro Hirota, Yu Oogami, Kazuaki Hashimoto
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Publication number: 20030066310Abstract: A glass polarizer and a method of making the polarizer, the polarizer being produced from an R2O—Al2O3—B2O3—SiO2 glass containing limited amounts of ZrO2 and TiO2, and having a silver halide liquidus temperature and a rutile liquidus temperature, both temperatures being not over 995° C.Type: ApplicationFiled: October 9, 2001Publication date: April 10, 2003Inventors: Michael D. Harris, Thomas G. Havens, William E. Horsfall, David J. Kerko
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Patent number: 6536238Abstract: When molten glass which is under an atmosphere of pressure P, is fed into a vacuum chamber capable of rendering a pressure to the molten glass to be in a range of 38 [mmHg]-(P-50) [mmHg] to perform degassing to the molten glass, a staying time of the molten glass in the vacuum chamber is in a range of 0.12-4.8 hours, whereby there is obtainable an effective degassing function to the molten glass.Type: GrantFiled: September 20, 2001Date of Patent: March 25, 2003Assignee: Asahi Glass Company, LimitedInventors: Toshiyasu Kawaguchi, Koji Obayashi, Misao Okada, Yusuke Takei
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Publication number: 20030010061Abstract: The present invention generally relates the recovery of energy from a glass facility, such as a glass manufacturing facility and/or a float glass facility. Various embodiments of the present invention incorporate an air separation unit with a glass facility whereby energy may be recovered, generated, and/or conserved. In various embodiments, energy is recovered, generated, and/or conserved through hot expansion, mass flow increase, more efficient fuel consumption and/or the like.Type: ApplicationFiled: August 24, 2001Publication date: January 16, 2003Inventors: Bao Ha, Thierry Legiret
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Publication number: 20020083740Abstract: Silica grain of desired properties and size is created in a vacuum chamber. Fine silica powder is injected in the chamber or silica powder is formed in situ by combusting precursors. A plasma is formed centrally in the chamber to soften the silica powders so that they stick together and form larger grains of desired size. The grains are collected, doped, fused and flowed into tubes or rods. A puller pulls the tube or rod through a chamber seal into a lower connected vacuum chamber. The tube or rod is converted to rods and fibers or plates and bars in the connected chamber. Fused silica in a crucible tray is subjected to ultrasound or other oscillations for outgassing. Gases are removed by closely positioned vacuum ports.Type: ApplicationFiled: June 15, 2001Publication date: July 4, 2002Inventor: Kiril A. Pandelisev
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Publication number: 20020054976Abstract: A molded glass substrate for a magnetic disk is manufactured in the following manner: press-molding a heated glass material in the inside space of a molding die including a pair of dies, each having a predetermined processing plane, and a barrel die for slidably guiding the dies while forming the outer circumference of the glass material joined to both principal surfaces corresponding to the dies as a molding-free face; cooling the press-molded glass substrate; and forming a predetermined through-hole in the central portion of the glass substrate. This method enables manufacturing that prevents generation of industrial waste, such as glass power, abrasive, and solvent, as much as possible.Type: ApplicationFiled: July 23, 2001Publication date: May 9, 2002Inventors: Shoji Nakamura, Takahisa Kondou, Hidenao Kataoka, Yoshiyuki Shimizu
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Patent number: 6332339Abstract: When molten glass which is under an atmosphere of pressure P, is fed into a vacuum chamber capable of rendering a pressure to the molten glass to be in a range of 38 [mmHg]-(P-50) [mmHg] to perform degassing to the molten glass, a staying time of the molten glass in the vacuum chamber is in a range of 0.12-4.8 hours, whereby there is obtainable an effective degassing function to the molten glass.Type: GrantFiled: April 12, 2000Date of Patent: December 25, 2001Assignee: Asahi Glass Company, LimitedInventors: Toshiyasu Kawaguchi, Koji Obayashi, Misao Okada, Yusuke Takei
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Patent number: 6167727Abstract: A process for producing a polarizing glass containing shape-anisotropic metallic particles dispersed in an oriented state therein, which comprises drawing a glass preform containing metallic halide particles dispersed therein while its viscosity being held above 2×106, but below 7×107 poises; and subjecting the drawn glass to a reducing treatment so that a part or all of the metallic halide particles are reduced to metallic particles, which process enables it to produce a polarizing glass with a high yield from a starting material of a glass containing metallic halide particles, while avoiding glass breakage or fracture during elongation as well as preventing the elongated metallic halide particles from returning to a spherical shape.Type: GrantFiled: August 19, 1998Date of Patent: January 2, 2001Assignee: Hoya CorporationInventors: Hidemi Tajima, Takeshi Takahashi, Yukari Miyashita, Yoshihiko Matsuoka