Processes Patents (Class 65/17.1)
  • Patent number: 8955357
    Abstract: A method for embedding a dopant into a glass substrate is provided. The method may include the steps of applying the dopant to a surface of the glass substrate, positioning the glass substrate adjacent to a catalyst such that the dopant is intermediate the catalyst and the glass substrate, heating the glass substrate to a first temperature, operating a directed thermal energy source so as to generate thermal energy incident upon the dopant, reducing the temperature of the glass substrate to a second temperature below the first temperature, and holding the glass substrate at the second temperature for at least a period of time.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 17, 2015
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, Theodore Scone, Sepehr Sadeh
  • Patent number: 8563620
    Abstract: The process for the synthesis of a silica monolith comprises the following steps: hydrolysis of a silicon alkoxide in order to form a hydrolysis precursor followed by a condensation of said hydrolysis precursor in the presence of an organic solvent, in the presence of water and of a basic catalyst in order to form oligomeric clusters containing several silicon atoms; dispersion of said oligomeric clusters in a solution in order to form a sol; polymerization of the sol in order to obtain a gel via a first heat treatment, at a temperature below the boiling point of the constituents of the sol; drying of the gel via a second heat treatment; conversion of the gel to a xerogel via a third heat treatment; dehydration and densification of the xerogel until the silica monolith is obtained via a fourth heat treatment.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: October 22, 2013
    Assignees: Universite des Sciences et Technologies de Lille, Centre National de la Recherche Scientifique (CNRS)
    Inventors: Mohamed Bouazaoui, Bruno Capoen, Hicham El-Hamzaoui, Laurent Bigot, Géraud Bouwmans
  • Patent number: 8557150
    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: September 26, 2011
    Date of Patent: October 15, 2013
    Assignee: Ivoclar Vivadent AG
    Inventors: Christian Ritzberger, Ricardo Dellagiacomo, Marcel Schweiger, Harald Bürke, Wolfram Höland, Volker Rheinberger
  • Patent number: 8516853
    Abstract: The invention provides a method of fastening lamellae of a lamellar material that is at least partially conductive onto an insulating substrate (2) containing oxides that are suitable for dissociating into mobile ions of given charge and stationary ions of opposite charge, the method comprising the steps of: placing a sample (1) of the lamellar material against a surface of the substrate; causing the oxides of the substrate to dissociate; and subjecting the substrate and the sample to an electric field by means of an electrode in contact with the substrate and an electrode in contact with the sample.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: August 27, 2013
    Assignees: Universite Pierre et Marie Curie (Paris 6), Centre National de la Recherche Scientifique
    Inventors: Abhay Shukla, Javed Mazher
  • Patent number: 8464552
    Abstract: A process for the production of a self-supporting glass film is described. The method includes the steps of preparing a mixture containing a colloidal silica sol, at least one alkanolamine organic additive and an organic binder; coating the mixture onto a base material; drying the coated mixture to form a precursor film on the base material; releasing the precursor film from the base material; and firing the released precursor film to form a self-supporting glass film. Self-supporting glass films produced by the disclosed process are also described.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: June 18, 2013
    Assignee: 3M Innovative Properties Company
    Inventor: Toshihiro Kasai
  • Patent number: 8206620
    Abstract: There is provided a composition and a method for forming fire resistant panes containing borate-phosphate anions and the window pane and window assemblies prepared therefrom.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: June 26, 2012
    Assignee: AGP Plastics, Inc.
    Inventors: Nelson Bolton, W. Novis Smith, Elizabeth Wimmer
  • Patent number: 8003845
    Abstract: The invention concerns a process enabling the complete combustion and oxidation of the mineral fraction of combustible waste contained in an apparatus intended to treat waste by direct incineration-vitrification, said process comprising the following steps: a step to add said waste to the apparatus for its depositing on the surface of a molten glass bath contained in the apparatus, an incineration and oxidation step of the waste on the surface of the glass bath, an incorporation step to incorporate combustion products in the glass during which the glass bath, the combustion products and any vitrification additives added to the glass bath are heated until a paste-like, liquid mass is obtained, a step during which said mass is removed from the apparatus and left to cool to obtain finally what is called a confinement matrix, said process being characterized in that the complete combustion and oxidation of the waste is achieved partly during the waste adding step and partly during the waste incineration and ox
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: August 23, 2011
    Assignees: Commissariat a l'Energie Atomique, Compagnie Generale des Matieres Nucleaires
    Inventors: Olivier Pinet, Christophe Girold
  • Patent number: 7922917
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use for identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 12, 2011
    Assignee: QIAGEN GmbH
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Publication number: 20100285275
    Abstract: A glass substrate having at least one surface with engineered properties that include hydrophobicity, oleophobicity, anti-stick or adherence of particulate or liquid matter, resistance to fingerprinting, durability, and transparency (i.e., haze<10%). The surface comprises at least one set of topological features that together have a re-entrant geometry that prevents a decrease in contact angle and pinning of drops comprising at least one of water and sebaceous oils.
    Type: Application
    Filed: April 20, 2010
    Publication date: November 11, 2010
    Inventors: Adra Smith Baca, Karl William Koch, III, Shari Elizabeth Koval, Prantik Mazumder, Mark Alejandro Quesada, Wageesha Senaratne, Todd Parrish St. Clair
  • Patent number: 7700870
    Abstract: A high transmission and low iron glass is provided for use in a solar cell. The glass substrate may be patterned on at least one surface thereof. Antimony (Sb) is used in the glass to improve stability of the solar performance of the glass upon exposure to ultraviolet (UV) radiation and/or sunlight. The combination of low iron content, antimony, and/or the patterning of the glass substrate results in a substrate with high visible transmission and excellent light refracting characteristics.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: April 20, 2010
    Assignee: Guardian Industries Corp.
    Inventors: Scott V. Thomsen, Ksenia A. Landa, Richard Hulme, Anthony V. Longobardo, Leonid Landa, Anna Broughton
  • Publication number: 20100058807
    Abstract: A glass melting installation and a method of operation of this with a melting tank, with burners for fossil fuels and with at least one regenerator for preheating oxidation gases, whereby between the at least one regenerator and the melting tank at least two step-free port necks are provided for the alternating supply of oxidation gases and the removal of combustion gases, and whereby the port necks are provided with lateral supply openings for the supply of secondary oxidation gases. In order to achieve injection into the waste gas flow without directional influence, with a simple construction and good energy usage, the supply openings for the supply of secondary oxidation gases are perpendicular to the free cross-section of the port necks above the step-free bottom surfaces.
    Type: Application
    Filed: July 25, 2008
    Publication date: March 11, 2010
    Inventors: Manfred Wagner, Matthias Lindig
  • Patent number: 7661277
    Abstract: As a jig material to use under plasma reaction for producing semiconductors, the present invention provides a quartz glass having resistance against plasma corrosion, particularly corrosion resistance against fluorine-based plasma gases, and which is usable without causing anomalies to silicon wafers; the present invention furthermore provides a quartz glass jig, and a method for producing the same. A quartz glass containing 0.1 to 20 wt % in total of two or more types of metallic elements, said metallic elements comprising at least one type of metallic element selected from Group 3B of the periodic table as a first metallic element and at least one type of metallic element selected from the group consisting of Mg, Ca, Sr, Ba, Sc, Y, Ti, Zr, Hf, lanthanoids, and actinoids as a second metallic element, provided that the maximum concentration of each of the second metallic elements is 1.0 wt % or less.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: February 16, 2010
    Assignee: Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Tatsuhiro Sato, Nobumasa Yoshida, Mamoru Endo
  • Publication number: 20090120132
    Abstract: A process for making a glass product with reduced greenhouse gas emission, comprising: providing a raw material composition comprising at least one silicon dioxide or silicon dioxide-containing compound and at least one pre-reacted compound, wherein the pre-reacted compound comprises an atom of an alkaline earth metal chemically bonded to an oxygen atom, and a silicon atom chemically bonded to the oxygen atom; melting the raw material composition to produce a molten material; and forming the molten material into a glass product.
    Type: Application
    Filed: November 13, 2007
    Publication date: May 14, 2009
    Inventors: Jon Frederick Bauer, Susan McMillin Gee
  • Publication number: 20090091916
    Abstract: To provide a method for simply manufacturing a substrate provided with a flat surface shape. Specifically, a method for manufacturing a substrate according to the present invention includes the steps of preparing a structure including a glass layer and a precious metal particle having a diameter not less than 1 ?m and not more than 10 ?m disposed on the glass layer while contacting thereto; and putting the precious metal particle in the glass layer by heating the structure at a temperature which is lower than a softening point of the glass layer.
    Type: Application
    Filed: June 29, 2007
    Publication date: April 9, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoki Matsuzaki, Kazuya Ishiwata, Hiroaki Toshima
  • Patent number: 7485593
    Abstract: To provide titania-silica glass which is transparent glass of low thermal expansion, in particular, is of a low thermal expansion coefficient over a wide range of temperatures of 0 to 100° C. (an operating temperature range) when it is used as a photomask or a mirror material in extreme ultraviolet ray lithography, and which is excellent in homogeneity within the field and stability. Titania-silica glass is used which has 8 to 10% by weight of titania and 90 to 92% by weight of silica, where a Ti3+ concentration is 10 to 60 ppm by weight.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: February 3, 2009
    Assignee: Covalent Materials Corporation
    Inventors: Masanobu Ezaki, Masashi Kobata, Sachiko Kato
  • Publication number: 20080314085
    Abstract: A refractory composition includes a first set of components and a colloidal silica binder. The first set of components includes alumina and zirconia. The colloidal silica binder is provided at 5 wt % to 20 wt % of the dry weight of the first set of components. The refractory composition includes 45 wt % to 75 wt % alumina, 15 wt % to 30 wt % zirconia, and 10 wt % to 30 wt % silica.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 25, 2008
    Inventors: Charles W. Connors, SR., Michael W. Anderson, Shirish Shah
  • Publication number: 20080314084
    Abstract: A refractory system includes a first set of components and a colloidal silica binder. The first set of components includes alumina and zirconia. The colloidal silica binder is at 5 wt % to 20 wt % of the dry weight of the first set of components. The refractory composition comprises 10 wt % to 45 wt % alumina, at least 35 wt % zirconia, and at least 20 wt % silica.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 25, 2008
    Inventors: Charles W. Connors, SR., Michael W. Anderson, Shirish Shah
  • Publication number: 20080264311
    Abstract: The invention concerns a process enabling the complete combustion and oxidation of the mineral fraction of combustible waste contained in an apparatus intended to treat waste by direct incineration-vitrification, said process comprising the following steps: a step to add said waste to the apparatus for its depositing on the surface of a molten glass bath contained in the apparatus, an incineration and oxidation step of the waste on the surface of the glass bath, an incorporation step to incorporate combustion products in the glass during which the glass bath, the combustion products and any vitrification additives added to the glass bath are heated until a paste-like, liquid mass is obtained, a step during which said mass is removed from the apparatus and left to cool to obtain finally what is called a confinement matrix, said process being characterized in that the complete combustion and oxidation of the waste is achieved partly during the waste adding step and partly during the waste incineration and ox
    Type: Application
    Filed: May 25, 2005
    Publication date: October 30, 2008
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Olivier Pinet, Christophe Girold
  • Patent number: 7434420
    Abstract: A process for glass molding includes the steps of: gradually increasing a working temperature to a formation temperature T1 while maintaining a normal pressure and an initial mold position; maintaining the formation temperature T1 for about 60 seconds, and during this period; increasing the normal pressure to a first pressure P3, the first pressure P3 being in the range of 200-400 newtons; increasing the first pressure P3 to a second pressure P2, the second pressure P2 being in the range of 500-700 newtons; increasing the second pressure P2 to a formation pressure P1, the formation pressure being in the range of 700-900 newtons; decreasing the formation pressure P1 to a cooling pressure P4; gradually decreasing the formation temperature T1 to a slow-cooling temperature T3 while maintaining the cooling pressure P4 and gradually de-compacting the mold position.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: October 14, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Ga-Lane Chen
  • Publication number: 20080196448
    Abstract: For simple and rapid production of a shaped body comprising fused silica and a shaped body which leads to virtually no contamination of a melt in contact with the shaped body even at high temperatures, the invention provides a process comprising the steps: a) provision of fused silica in the form of essentially amorphous SiO2 grains of which not more than 5% have a diameter greater than 15 mm, b) addition of water to the fused silica grains to produce a slip, c) casting of the slip into a mould which comprises a hollow body having the inverse shape of the shaped body to be produced, d) drying of the slip to give an intermediate body, e) sintering of the intermediate body at a sintering temperature at which at least part of the fused silica is transformed from the amorphous modification into a crystalline modification, f) cooling of the sintered shaped body to a temperature below 300° C., so that a microstructure containing crystalline SiO2 is formed, and also a shaped body which comprises at least 99.
    Type: Application
    Filed: January 15, 2008
    Publication date: August 21, 2008
    Applicant: SCHOTT AG
    Inventors: Manfred Borens, Karsten von Westernhagen, Stefano Merolla, Gerald Wasem, Stefan Postrach
  • Publication number: 20080066495
    Abstract: A bioactive glass composition, a method and an implant. The glass composition comprising SiO2, Na2O, K2O, CaO, and P2O5, having the following composition: SiO2 48-52 wt-%, Na2O 9-15 wt-%, K2O 12-18 wt-%, CaO 10-16 wt-%, P2O51 - 7 wt-%, TiO2 0.2-2 wt-%, B2O3 0-4 wt-%, and MgO 0-6 wt-%, wherein Na2O+K2O>25 wt-%, MgO+CaO>14 wt-%, and B2O3/P2O5>0.3.
    Type: Application
    Filed: May 3, 2007
    Publication date: March 20, 2008
    Applicant: Inion Oy
    Inventors: Loredana Moimas, Eija Pirhonen
  • Publication number: 20080034794
    Abstract: A reactive liquid ceramic binder suitable for the production of ceramic products from ceramic powders is provided. The reactive liquid ceramic binder contains organo-modified siloxane compounds, wherein the liquid organo-modified siloxane compounds contain organoalkoxysiloxane units according to general formula (I) wherein R1=alkyl radical and/or aryl radical, R2?H and/or alkyl radical with 1 to 4 carbon atoms, a?0 and ?2, and b<0 and ?3, with the proviso that a+b?1 and ?4.
    Type: Application
    Filed: April 26, 2007
    Publication date: February 14, 2008
    Applicant: Goldschmidt GmbH
    Inventors: Thomas Ebbrecht, Tadeusz von Rymon Lipinski, Stefan Silber, Bernd Weyershausen
  • Publication number: 20080022722
    Abstract: Methods for continuously manufacturing crystallized glass curved panels and pipes. The crystallized glass flat panel can be reformed by re-heating process. The method includes a reforming bed in the tunnel furnace that helps the flat panel to deform during transition. Three different reforming bed designs and processes are invented to produce convex and concave curved panels and pipes. In producing the pipe, both surfaces of the opening edges of the open pipe will be liquefied to liquid glass, even the pre-existing crystal structure. A roller squeezer will squeeze both edges together tightly, so they will be fusion bonded together. The closed pipe will be crystallized again so the crystals can grow between the bonding edges. The crystallized glass panel are made from crystallizable glass consist essentially of SiO2—Al2O3—CaO or SiO2—Al2O3—CaO—ZnO, or alike.
    Type: Application
    Filed: December 22, 2005
    Publication date: January 31, 2008
    Inventor: Chi-Fu Tito Hsueh
  • Patent number: 7312170
    Abstract: The present invention provides an optical synthetic quartz glass material which substantially does not cause changes in transmitted wave surface (TWS) by solarization, compaction (TWS delayed), rarefaction (TWS progressed) and photorefractive effect when ArF excimer laser irradiation is applied at a low energy density, e.g. at energy density per pulse of 0.3 mJ/cm2 or less. The present invention further provides a method for manufacturing the same. In order to solve the above-mentioned problems, the optical synthetic quartz glass material of the present invention is characterized in that, in a synthetic quartz glass prepared by a flame hydrolysis method using a silicon compound as a material, the followings are satisfied that the amount of SiOH is within a range of more than 10 ppm by weight to 400 ppm by weight, content of fluorine is 30 to 1000 ppm by weight, content of hydrogen is 0.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: December 25, 2007
    Assignees: Heraeus Quarzglas GmbH & Co. KG, Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Hiroyuki Nishimura, Akira Fujinoki
  • Patent number: 7297646
    Abstract: Ceramics comprising (i) at least one of Nb2O5 or Ta2O5 and (ii) at least two of (a) Al2O3, (b) REO, or (c) at least one of ZrO2 or HfO2. Embodiments of ceramics according to the present invention can be made, formed as, or converted into optical waveguides, glass beads, articles (e.g., plates), fibers, particles (e.g., abrasive particles), and thin coatings.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 20, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Anatoly Z. Rosenflanz, Craig R. Schardt
  • Patent number: 7175786
    Abstract: Methods for making glasses and glass-ceramics comprising Al2O3 and SiO2. Glasses made according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. Some embodiments of glass-ceramic particles made according to the present invention can be are particularly useful as abrasive particles.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: February 13, 2007
    Assignee: 3M Innovative Properties Co.
    Inventors: Ahmet Celikkaya, Thomas J. Anderson
  • Patent number: 6890873
    Abstract: Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value) D50?150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) ??100 m·Pas 3. Thixotropy of Ti (?(5 rpm))/(?(50 rpm))?2 4. BET surface area 30-60 m2/g 5. Compacted bulk=100-160 g/L 6. Original pH?4.5 that can be used for the preparation of dispersions and glass bodies.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: May 10, 2005
    Assignee: Degussa AG
    Inventors: Monika Oswald, Gerrit Schneider, Klaus Deller
  • Patent number: 6818308
    Abstract: A glass substrate for a display with a thickness of from 0.3 to 6 mm, which has an average WCA (filtered center line waviness: JIS B0651) of from 0.03 to 0.5 &mgr;m measured with a contact-type surface roughness measuring instrument using a phase compensation 2RC zone filter with a cutoff value of 0.8 to 25 mm over a measuring length of 200 mm.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Asahi Glass Company, Limited
    Inventors: Jun-ichiro Kase, Yasuji Fukasawa, Yasumasa Nakao
  • Publication number: 20040166173
    Abstract: A glass or glass-like substrate having a contact-killing, non-leaching antimicrobial effective amount of metal ions contained in at least one surface region thereof, and having a color of b*≦+6 on the CIE international color scale is disclosed. The antimicrobial substrate is prepared by providing a metal ion precursor comprising at least one source of antimicrobial effective metal ions dissolved or otherwise dispersed in a carrier material; depositing the precursor onto at least one surface of the substrate; drying the substrate at a temperature of from about 20° C. to about 105° C. by removing volatiles from the metal ion precursor; and heating the resulting substrate at a temperature of about 600-650° C. for 2-5 min. to exchange or otherwise implant antimicrobial metal ions from the precursor and into the glass or glass-like substrate.
    Type: Application
    Filed: February 20, 2003
    Publication date: August 26, 2004
    Inventor: Eberhard R. Albach
  • Publication number: 20040027555
    Abstract: Titania-containing silica glass bodies and extreme ultraviolet elements having low levels of striae are disclosed. Methods and apparatus for manufacturing and measuring striae in glass elements and extreme ultraviolet elements are also disclosed.
    Type: Application
    Filed: March 3, 2003
    Publication date: February 12, 2004
    Inventors: Kenneth E. Hrdina, John E. Maxon, Brent R. Mclean
  • Patent number: 6645893
    Abstract: A glass includes (a) a matrix containing a compound of at least one nonmetallic element; and (b) a particle selectively formed in the matrix. This particle is made of the at least one nonmetallic element. A process for producing such glass includes (a) providing a blank glass containing a compound of at least one nonmetallic element; (b) condensing a pulsed laser beam to a focal point in the blank glass such that a particle is selectively formed in the blank glass at a position corresponding to the focal point, the particle being made of the at least one nonmetallic element dissociated from the compound; and (c) moving the focal point in the blank glass to produce a pattern of the particle. The glass is suitable for optical functional elements.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: November 11, 2003
    Assignee: Central Glass Company, Limited
    Inventors: Kiyotaka Miura, Seiji Fujiwara, Takuya Teshima, Natsuya Nishimura, Yoshinori Kubota
  • Publication number: 20030148057
    Abstract: Small sheet glass plates (2) of this type with a predetermined geometrical structure are conventionally produced by being cut out of a larger sheet glass plate (1). The small sheet glass plates (2) that have been separated in this way, together with a jointing cement, in particular a solder frame (3) consisting of glass solder are then attached to other components, for example to be used in “electronic packaging”. In order to improve handling during the production and the jointing of the small sheet glass plates (2), the invention provides a larger sheet glass plate (2) which is patterned on both sides using a screen-printing or stencil-printing process and preferably using laser beam treatment along desired predetermined breaking points (5). Said larger glass plate can then be separated into smaller, patterned plates, i.e. the small sheet glass plates (2), whose shape is geometrically determined, by a simple preferably mechanical breaking process.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 7, 2003
    Inventors: Christian Dietz, Robert Fuerst, Christoph Hermanns, Heinrich Ostendarp, Dietrich Mund
  • Publication number: 20030145624
    Abstract: The invention relates to a method for producing glass panes of any desired contour from sheet glass, comprising the following steps: scribing scribe lines into a least one face of the sheet glass along the contour down to a depth T glass pane?, using a cutting device, and positioning the glass pane on a support. The inventive method is further characterized in that a defined force F is applied to the sheet glass so that it breaks along the scribe lines, said break extending through the entire thickness of the sheet glass.
    Type: Application
    Filed: January 10, 2003
    Publication date: August 7, 2003
    Inventors: Thomas Luettgens, Winfried Hartmann, Bernd Hoetzel, Patrick Markschlger, Andreas Neumayr
  • Patent number: 6502422
    Abstract: A method for quartz crucible formation wherein an at least substantially enclosed chamber surrounds a crucible mold. The atmosphere in the chamber is controlled to include a desired gas or combination of gases at a positive pressure. The positive pressure is achieved because the total outflow of gas is less than the total inflow of gas. A heat source is initiated to melt a quartz material lining the mold once the desired atmosphere is achieved, and the quartz material is fused.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: January 7, 2003
    Assignee: General Electric Company
    Inventors: Richard L. Hansen, Frederic F. Ahlgren, Robert A. Giddings
  • Patent number: 6438303
    Abstract: A multimode optical fiber having a first laser bandwidth greater than 220 MHz.km in the 850 nm window, a second laser bandwidth greater than 500 MHz.km in the 1300 nm window, a first OFL bandwidth of at least 160 MHz.km in the 850 nm window, and a second OFL bandwidth of at least 500 MHz.km in the 1300 nm window is disclosed. The multimode fiber is capable of operating in telecommunication systems employing both LED power sources and high power laser sources. Methods of making and testing the multimode optical fiber are also disclosed.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: August 20, 2002
    Assignee: Corning Incorporated
    Inventors: John S. Abbott, III, Douglas E. Harshbarger
  • Patent number: 6415093
    Abstract: An optical device having at least two optically transparent optical parts which are bonded together with an optically transparent adhesive layer. The adhesive layer is formed from a matrix containing silicon, titanium, zirconium, aluminum or germianium, and oxygen atoms. At least part of the atoms is bonded to other atom(s) through a polyvalent hydrocarbon group and directly bonded a monovalent hydrocarbon group. The refractive index value of the adhesive layer approximates to the refractive index values of the at least two optically transparent optical parts. An adhesive composition for bonding optical parts and a method of bonding optical parts are also proposed.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: July 2, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Koichiro Nakamura, Masahiro Hori, Hiroaki Yamamoto
  • Patent number: 6387514
    Abstract: A solar control coated substrate with high reflectance (RL) and comprises a pyrolytically-formed coating layer containing oxides of tin and antimony in a Sb/Sn molar ratio of from 0.03 to 0.16, characterized in that the coating layer further contains additives comprising at least one element selected form the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc, and zirconium and is free from fluorine, whereby the so coated substrate has a reflectance of at least 10%. The invention covers a process for making such a coated substrate and a glazing panel incorporating such a coated substrate.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 14, 2002
    Assignee: Glaverbel
    Inventor: Philippe Legrand
  • Patent number: 6374639
    Abstract: A method is provided for manufacturing a silica glass that is substantially free of chlorine. The method includes the step of separately expelling a silicon tetrafluoride gas, a combustion gas, and a combustible gas from a burner made of silica glass, the flow velocity of the silicon tetrafluoride gas being within the range of about 9 slm/cm2 to about 20 slm/cm2. The method further includes the steps of producing minute silica glass particles by reacting the silicon tetrafluoride gas with water produced by a reaction of the combustion gas with the combustible gas, depositing the minute silica glass particles on a target, and producing the silica glass by fusing and vitrifying the minute silica glass particles deposited on the target.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: April 23, 2002
    Assignee: Nikon Corporation
    Inventors: Norio Komine, Seishi Fujiwara, Hiroki Jinbo
  • Patent number: 6292607
    Abstract: The present invention provides a method for determining a condition of aging for an optical waveguide grating. In this method, the aged deterioration curve of the optical waveguide grating is set as a form of C·t−&agr;, where t represents time, and &agr; and C represent parameters. Then, the condition of the aging is determined based on the aged deterioration curve.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: September 18, 2001
    Assignee: Sumitomo Electric Industries
    Inventors: Shinji Ishikawa, Toru Iwashima, Michiko Takushima (nee Harumoto), Akira Inoue, Masakazu Shigehara
  • Patent number: 6217681
    Abstract: Oxygen-enhanced combustion in a manufacturing plant using a nitrogen plant to obtain a nitrogen product stream for use in the plant is effected by utilizing the oxygen-rich vent, waste, or exhaust stream as the primary source of oxidant for combustion of fuel in burners used to heat furnaces and the like in the same plant. Processes according to the invention employ a vent stream in place of a high purity oxygen stream for oxy-fuel combustion, oxygen lancing, and oxygen boosting.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: April 17, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Edward Robert Bazarian, Charles Edward Baukal, Jr., Prince Boyd Eleazer, III, Bruce Kyle Dawson, Robert Dean Marchiando