Uncombined Silica Containing (e.g., Sand) Patents (Class 501/31)
-
Patent number: 10689288Abstract: An ultraviolet transmitting glass containing, in mole percentage based on oxides, 55 to 80% of SiO2, 12 to 27% of B2O3, 4 to 20% of R2O (where R represents an alkali metal selected from a group consisting of Li, Na, and K) in total, 0 to 3.5% of Al2O3, 0 to 5% of R?O (where R? represents an alkaline earth metal selected from a group consisting of Mg, Ca, Sr, and Ba) in total, 0 to 5% of ZnO, and 0 to 10% of ZrO2, wherein transmittance at a wavelength of 254 nm in terms of spectral transmittance at a plate thickness of 0.5 mm is 70% or more. The glass with high ultraviolet light transmittance, in particular, high deep ultraviolet light transmittance is provided.Type: GrantFiled: November 6, 2017Date of Patent: June 23, 2020Assignee: AGC Inc.Inventors: Takahiro Sakagami, Makoto Shiratori
-
Patent number: 10647607Abstract: An ultraviolet transmitting glass containing, in mole percentage based on oxides, 55 to 80% of SiO2, 12 to 27% of B2O3, 4 to 20% of R2O (where R represents an alkali metal selected from a group consisting of Li, Na, and K) in total, 0 to 3.5% of Al2O3, 0 to 5% of R?O (where R? represents an alkaline earth metal selected from a group consisting of Mg, Ca, Sr, and Ba) in total, 0 to 5% of ZnO, and 0 to 10% of ZrO2, wherein transmittance at a wavelength of 254 nm in terms of spectral transmittance at a plate thickness of 0.5 mm is 70% or more. The glass with high ultraviolet light transmittance, in particular, high deep ultraviolet light transmittance is provided.Type: GrantFiled: November 6, 2017Date of Patent: May 12, 2020Assignee: AGC Inc.Inventors: Takahiro Sakagami, Makoto Shiratori
-
Patent number: 10407334Abstract: The present invention provides a composite shaped body comprising silica nanoparticles and an organic polymer, wherein the silica nanoparticles and the organic polymer form a three-dimensional network; thereby provides: a composite shaped body which exhibits excellent formability and fabricability and which is also suited for use, for example, in producing a silica glass provided with an electrical conductivity; and a silica glass (especially, an electrically conductive silica glass) obtained by firing the composite shaped body.Type: GrantFiled: July 7, 2010Date of Patent: September 10, 2019Assignee: KYUSHU UNIVERSITYInventors: Shigeru Fujino, Hiroshi Ikeda, Seiji Inaba, Toshihisa Kajiwara
-
Patent number: 10173917Abstract: To provide granules for the production of silicate glass, said granules being less likely to adhere even if heated at a high temperature exceeding 800° C. A method for producing granules, which has a step of mixing a glass raw material composition composed essentially of an alkali metal source, an alkaline earth metal source and a powdery silicon source, with water, followed by compression molding, and which is characterized in that the glass raw material composition contains at least 50 mass % of the silicon source, and at least 10 mass % in total of the alkali metal source and the alkaline earth metal source, as calculated as oxides, based on 100 mass % of the silicate glass obtainable from the granules, the alkali metal source contains an alkali metal carbonate, and D90 representing the particle size at a cumulative volume of 90% in the particle size accumulation curve of the alkaline earth metal source is at most 100 ?m.Type: GrantFiled: July 26, 2016Date of Patent: January 8, 2019Assignee: AGC Inc.Inventors: Takeshi Yamazaki, Terutaka Maehara, Akiko Kuwayama
-
Patent number: 9598306Abstract: The present invention relates to pellets for use in the manufacture of glass.Type: GrantFiled: December 1, 2015Date of Patent: March 21, 2017Assignee: Sibelco UK Ltd.Inventors: Samuel Mark Leese, Peter Robert Sheppardson
-
Patent number: 9023474Abstract: A plurality of soda-lime glass batch materials are formed into granules that include a core and a shell surrounding the core. The core comprises a first portion of the plurality of glass batch materials, and the shell comprises a remaining portion of the plurality of glass batch materials. These core-shell granules can be melted in a glass furnace to produce molten soda-lime glass in less time and at a lower temperature than conventional soda-lime glass batch preparations.Type: GrantFiled: March 15, 2013Date of Patent: May 5, 2015Inventors: Witold W. Mastek, Desikan Sundararajan, Terence J. Clark, Melisa Y. Zambrano Becerra
-
Publication number: 20140274652Abstract: A plurality of soda-lime glass batch materials are formed into granules that include a core and a shell surrounding the core. The core comprises a first portion of the plurality of glass batch materials, and the shell comprises a remaining portion of the plurality of glass batch materials. These core-shell granules can be melted in a glass furnace to produce molten soda-lime glass in less time and at a lower temperature than conventional soda-lime glass batch preparations.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: Owens-Brockway Glass Container Inc.Inventor: Owens-Brockway Glass Container Inc.
-
Publication number: 20130225025Abstract: A glass composition including Si02 in an amount from about 70.6 to about 79.6% by weight, AI2O3 in an amount from about 10.0 to 18.5% by weight, MgO m an amount from about 10.0 to about 19.0% by weight, CaO in an amount from about 0.1 to about 5.0% by weight, Li20 in an amount from 0.0 to about 3.0% by weight, and Na20 in an amount from 0.0 to about 3.0% by weight is provided. In exemplary embodiments, the glass composition is free or substantially free of B2O3 and fluorine. The glass fibers have a specific modulus between about 3.40×107 J/kg and 3.6×107 J/kg. Glass fibers formed from the inventive composition possess exceptionally an exceptionally high modulus and a low density, which make them particularly suitable in applications that require high strength, high stiffness, and low weight, such as wind blades and aerospace structures.Type: ApplicationFiled: October 18, 2011Publication date: August 29, 2013Applicant: OCV Intellectual Capital, LLCInventors: Peter Bernard McGinnis, Douglas Alan Hofmann
-
Patent number: 8298971Abstract: The present invention relates to a ceramic powder and special raw material and use thereof. The raw material of the ceramic powder comprises 20-80 mass parts of SiO2, 10-50 mass parts of AlF3 and 0-30 mass parts of regulator. The raw material for preparing the ceramic powder is mixed and crushed, followed by melted into liquid glass at 1200-1400° C., quenched to obtain the ceramic powder. The low temperature co-fired ceramic powder has the following advantages: low sintering temperature (750-850° C.) and controllable sintering shrinkage rate; the dielectric constant of the ceramic block prepared with the ceramic powder is adjustable between 4.5 and 10 (1 MHz), the dielectric loss is less than 0.002, the mechanical strength is high and the preparation process is simple. The ceramic powder may be used for electric devices such as ceramic substrate, resonator, etc. as well as in other microelectronic packaging.Type: GrantFiled: November 4, 2008Date of Patent: October 30, 2012Assignee: Tsinghua UniversityInventors: Ji Zhou, Rui Wang, Hongjie Zhao
-
Publication number: 20120228561Abstract: Provided is the method for producing, by heat treating raw material powder, a lithium ion secondary battery positive electrode material which contains an olivine-structure crystal represented by general formula LiMxFe1-xPO4 (where 0?x<1 and M is at least one type selected from Nb, Ti, V, Cr, Mn, Co and Ni), wherein the raw material powder contains trivalent iron compound. The present invention allows for stably producing at reduced cost a lithium ion secondary battery positive electrode material which contains olivine-type LiMxFe1-xPO4 crystal.Type: ApplicationFiled: November 11, 2010Publication date: September 13, 2012Applicants: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, NIPPON ELECTRIC GLASS CO., LTD.Inventors: Tomohiro Nagakane, Akihiko Sakamoto, Tsuyoshi Honma, Takayuki Komatsu
-
Publication number: 20120202674Abstract: One embodiment of the disclosure relates to a method of cleaning silica-based soot or an article made of silica-based soot, the method comprising the step of treating silica-based soot or the article made of silica-based soot with at least one of the following compounds: (i) a mixture of CO and Cl2 in a carrier gas such that the total concentration of CO and Cl2 in the mixture is greater than 10% (by volume, in carrier gas) and the ratio of CO:Cl2 is between 0.25 and 5; (ii) CCl4 in a carrier gas, such that concentration CCl4 is greater than 1% (by volume, in carrier gas). Preferably, the treatment by CCl4 is performed at temperatures between 600° C., and 850° C. Preferably, the treatment with the CO and Cl mixture is performed at temperatures between 900° C. and 1200° C. The carrier gas may be, for example, He, Ar, N2, or the combination thereof.Type: ApplicationFiled: August 9, 2011Publication date: August 9, 2012Inventors: Nicolas LeBlond, Pushkar Tandon, Srinivas Vemury
-
Publication number: 20110306486Abstract: An alumino-borosilicate glass for the confinement, isolation of a radioactive liquid effluent of medium activity, and a method for treating a radioactive liquid effluent of medium activity, wherein calcination of said effluent is carried out in order to obtain a calcinate, and a vitrification adjuvant is added to said calcinate.Type: ApplicationFiled: December 23, 2009Publication date: December 15, 2011Applicant: Aveva NCInventors: Jean-Luc Dussossoy, Agnés Grandjean, Thierry Advocat, Nicolas Bousquet, Sophie Schuller
-
Publication number: 20110275506Abstract: This invention relates to a high transmission low iron glass that includes boron oxide. The boron oxide, added to this low iron glass, has the effect of improving glass refining, homogeneity and quality (lower seed count) through its flux action and improves glass optical parameters of green and clear glass through the change in refractive index and surface tension. Boron oxide lends to broader and weaker absorption band of such transition element(s) as iron which additionally improves the transmittance of low iron clear glass in certain example embodiments of this invention. In certain example embodiments, the addition of boron oxide in certain quantities in advantageous in that it improves the chemical durability of the glass by decreasing the USPX (or USPXIII) value of the glass via suppression of the silica, sodium ions in the glass structure.Type: ApplicationFiled: July 14, 2011Publication date: November 10, 2011Applicants: Phoenicia America-Israel (Flat Glass) Ltd., Guardian Industries Corp.Inventors: Kevin R. Fulton, Abraham W. Michaelis, Mario Resch, David Bird, Richard Hulme, Scott V. Thomsen
-
Publication number: 20110151261Abstract: A glass flake (10) having improved heat resistance and chemical resistance is formed from a glass base material satisfying, in mass %, 60?SiO2?75, 5<Al2O3?15, 3?CaO?20, 6?Na2O?20 and 9?(Li2O+Na2O+K2O)?13. When 9?(Li2O+Na2O+K2O)?13 is satisfied in mass %, the CaO content and the Na2O content are preferably set within the ranges of 5?CaO?20 and 6?Na2O?13, respectively. When 13?(Li2O+Na2P+K2O)?20 is satisfied in mass %, the CaO content and the Na2O content are preferably set within the ranges of 3?CaO?15 and 9?Na2O?20, respectively. The working temperature of the glass base material is preferably 1180° C.-1300° C. The temperature difference ?T obtained by taking the devitrification temperature of the glass base material from the working temperature of the glass base material is preferably 0° C.-200° C. The glass transition temperature of the glass base material is preferably 550° C.-700° C. The acid resistance index ?W of the glass base material is preferably 0.05-1.5 mass %.Type: ApplicationFiled: August 26, 2009Publication date: June 23, 2011Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kosuke Fujiwara, Akihiro Koyama
-
Patent number: 7946131Abstract: The subject invention is directed to a method for producing a raw material or materials that can be used by themselves or in combination with other ingredients to make glass of high quality at high efficiencies and short production times. The raw materials are capable of high reactivity in a glass melting furnace and therefore will allow glass to be produced either at lower temperatures or shorter residence times at the same temperatures as compared with known methods.Type: GrantFiled: April 17, 2007Date of Patent: May 24, 2011Assignee: Johns ManvilleInventors: Jon Frederick Bauer, Susan McMillin Gee
-
Patent number: 7937970Abstract: A method for preparing pre-reacted synthetic batches, with a low content of carbon dioxide, for the production of glass formulas, which comprises mixing stoichiometric amounts of substances, containing molecular systems of silica-sodium, silica-sodium-calcium, silica-sodium-magnesium, silica-calcium-magnesium, silica-sodium-calcium-magnesium and mixtures thereof, having reaction temperatures which do not form a liquid phase, that are selected from invariant points or from points on a line connecting invariant points of phase diagrams of said molecular systems, to complete a desired molecular formula; adding cullet to the mixture; and calcining the mixture to a reaction temperature which do not form a liquid phase and wherein the CO2 is liberated.Type: GrantFiled: August 29, 2003Date of Patent: May 10, 2011Assignee: Vitro Europa, Ltd.Inventor: Antonio Pita-Szczesniewski
-
Publication number: 20110070444Abstract: Disclosed is a glass flake (10) having improved heat resistance and improved chemical durability, which is composed of a glass base material satisfying, as expressed in mass %, 65?SiO2?70, 5?Al2O3?15, 1?MgO?10, 10?CaO?25 and 0.1?(Li2O+Na2O+K2O)?4. The temperature difference ?T obtained by taking the devitrification temperature of the glass base material from the working temperature thereof is preferably within the range of 0° C. to 200° C. The glass transition temperature of the glass base material is preferably within the range of 580° C. to 800° C. Furthermore, it is desirable that the value of ?W, which serves as an index for the acid resistance of the glass base material forming the glass flake (10), is within the range of 0.05 to 0.8 mass %.Type: ApplicationFiled: May 28, 2009Publication date: March 24, 2011Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kosuke Fujiwara, Akihiro Koyama
-
Publication number: 20110064951Abstract: Disclosed is a glass flake (10) having improved heat resistance and improved chemical durability, which is composed of a glass base material satisfying, as expressed in mass %, 60?SiO2?70, 5?Al2O3?15, 1?MgO?10, 10?CaO?25 and 4<(Li2O+Na2O+K2O)<9. The temperature difference ?T obtained by taking the devitrification temperature of the glass base material from the working temperature thereof is preferably within the range of 0-200° C. The glass transition temperature of the glass base material is preferably within the range of 560-750° C. It is desirable that the value of ?W, which serves as an index for the acid resistance of the glass base material, is within the range of 0.05-1.2 mass %.Type: ApplicationFiled: May 28, 2009Publication date: March 17, 2011Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kosuke Fujiwara, Akihiro Koyama
-
Publication number: 20090113937Abstract: Lime glass batch composition wherein at least part of the limestone and/or the dolomite from the composition has been replaced by a synthetic aluminosilicate of calcium and magnesium.Type: ApplicationFiled: June 1, 2007Publication date: May 7, 2009Applicant: AGC Flat Glass Europe SAInventors: Pierre Carleer, Olivier Collart, Benoit Chiliatte
-
Patent number: 7494948Abstract: A process for preparing and storing moist glass-making batch is disclosed, comprising incorporating a surfactant in moist batch so that when the batch is either: a) stored at a temperature below 35° C., it remains free flowing without setting, or b) pre-heated at, or above, 100° C. before supply to a glass melting furnace, it remains free flowing without setting. The moist batch includes from 2% to 10% by weight free water and from 0.0001% to 5% by weight surfactant, which is preferably a soluble soap (for example a carboxylate having from 4 to 22 carbon atoms in its chain) that is incorporated into the batch as it is mixed. The moist batch can be stored for at least 24 hours, and it can be pre-heated to at least 150° C., and remain free flowing without setting.Type: GrantFiled: September 8, 2003Date of Patent: February 24, 2009Assignee: Pilkington Group LimitedInventor: Andrew Thomas Stanley
-
Patent number: 7325417Abstract: A glass having a visible transmission of no greater than 28% and low IR transmission, and employing a colorant portion: total iron (expressed as Fe2O3): 0.7 to 1.8% cobalt oxide (e.g., Co3O4): 0.001 to 1.0% titanium oxide (e.g., TiO2): 0.25 to 3.0% selenium (e.g., Se): 0 to 0.0020% chromium oxide (e.g., Cr2O3): 0 to 0.010%.Type: GrantFiled: July 5, 2005Date of Patent: February 5, 2008Assignee: Guardian Industries Corp.Inventors: Ksenia A. Landa, Leonid Landa, Richard Hulme
-
Patent number: 6893991Abstract: The invention relates to a melt-formed, high-silver, alkali-free, borosilicate glass that can be used for fabricating optical devices. For gradient index lenses, the glass can be subjected to an ion exchange process in order to introduce a less polarizable ion onto the glass surface having a higher refractive index on the surface relative to the center of the glass. The glass is unique in that the silver ions are not introduced by ion exchange. Rather, the high silver content of the glass is achieved during melting. As melted, the transparent alkali-free, borosilicate glass produced by the inventive method contains a high concentration of silver, exhibits a high refractive index and negligible attenuation at wavelengths longer than about 400 nm, making it particularly suitable for high performance fiber optic components such as gradient index or so-called GRIN lenses.Type: GrantFiled: August 15, 2001Date of Patent: May 17, 2005Assignee: Corning IncorporatedInventors: Roger J. Araujo, Donald M. Trotter, Jr.
-
Patent number: 6679945Abstract: 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 %) &eegr;≦100 m·Pas 3. Thixotropy of Ti (&eegr;(5 rpm))/(&eegr;(50 rpm))≦2 4. BET surface area 30-60 m2/g 5. Compacted bulk=100-160 g/L 6. Original pH≦4.5 can be used for the preparation of dispersions and glass bodies.Type: GrantFiled: August 17, 2001Date of Patent: January 20, 2004Assignee: Degussa AGInventors: Monika Oswald, Gerrit Schneider, Klaus Deller
-
Patent number: 6605555Abstract: Glass is made from batch components having a source of ferrous iron to increase the starting amount of ferrous iron in the glass batch. The ferrous iron source is an iron silicate material, such as fayalite (2FeO.SiO2), iron garnet (3FeO.Fe2O3.3SiO2) magnesium-iron olivine (2(Mg,Fe)O.SiO2), grunerite (6FeO.8SiO2FeOH)2, actinolite (CaO.3(Mg,Fe)O.4SiO2) or iron rich anthophyllite ((Mg,Fe)O.SiO2). The presence of the ferrous iron source in the glass batch components decreases or eliminates the amount of coal and also leads to a glass article having a redox ratio greater than about 0.25.Type: GrantFiled: November 30, 2000Date of Patent: August 12, 2003Assignee: PPG Industries Ohio, Inc.Inventor: Larry J. Shelestak
-
Patent number: 6455107Abstract: A body of carbonaceous or other material for use in corrosive environments such as oxidising media or gaseous or liquid corrosive agents at elevated temperatures, in particular in molten salts such as cryolite, is coated with a protective surface coating which improves the resistance of the body to oxidation or corrosion and which may also enhance the bodies electrical conductivity and/or its electrochemical activity. The protective coating is applied in one or more layers from a colloidal slurry containing reactant or non-reactant substances, or a mixture of reactant and non-reactant substances, in particular mixtures containing silicon carbide and molybdenum silicide or silicon carbide and silicon nitride, which when the body is heated to a sufficient elevated temperature reaction sinter as a result of micropyretic reaction and/or sinter without reaction to form the protective coating.Type: GrantFiled: April 30, 1996Date of Patent: September 24, 2002Assignee: Moltech Invent S.A.Inventors: Jainagesh A. Sekhar, Vittorio de Nora
-
Publication number: 20020044903Abstract: Pyrogenically prepared silicon dioxide with the following physicochemical properties:Type: ApplicationFiled: August 17, 2001Publication date: April 18, 2002Inventors: Monika Oswald, Gerrit Schneider, Klaus Deller
-
Patent number: 6358870Abstract: A method for preparing pre-reacted batches of raw materials substantially free from carbon dioxide for the production of glass formulas, comprising: mixing stoichiometric amounts of substances containing molecular systems of silica-sodium, silica-sodium-calcium, silica-sodium-magnesium, silica-calcium-magnesium, silica-sodium-calcium-magnesium and mixtures thereof, having reaction temperatures which do not form a liquid phase, which are selected from invariant points or from points on a line connecting invariant points of phase diagrams of said molecular systems, to complete a desired molecular glass formula.Type: GrantFiled: May 3, 1999Date of Patent: March 19, 2002Assignee: Vitro Corporativo, S.A. DE C.V.Inventors: Antonio Pita Szczesniewski, Hugo Bolio Arceo
-
Patent number: 6235666Abstract: A high LTa, low UV and IR transmittance grey glass employing as its colorant portion iron (Fe2O3/FeO), erbium (Er2O3) and, optionally, titanium (TiO2). Enhanced effects are achieved by forming separate prebatch mixes, one of which includes rouge, metallic Si (optional), SiO and sand, the other including the remainder of ingredients, which after separate formation are then admixed to form the final, overall batch.Type: GrantFiled: March 29, 1999Date of Patent: May 22, 2001Assignee: Guardian Industries CorporationInventors: Gary Seldon Cochran, Anthony Vincent Longobardo, Ksenia Alexander Landa, Leonid Mendel Landa
-
Patent number: 6196027Abstract: The invention is a method of making silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties. The phosphorus compound is generally a metal phosphide which is added to the batch glass composition in amounts greater than 0.05 weight percent prior to melting. The composition and method result in a finished glass suitable for use in architectural and automotive glazings.Type: GrantFiled: July 22, 1999Date of Patent: March 6, 2001Assignee: Libbey-Owens-Ford Co.Inventors: Srikanth Varanasi, Michael B. Purvis, Paige L. Higby, Kevin V. Goodwin, Gwendolyn A. Young
-
Patent number: 6110583Abstract: Silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties are disclosed. The phosphorus compound is generally a metal phosphide which is added to the batch glass composition in amounts greater than 0.05 weight percent prior to melting. The composition and method result in a finished glass suitable for use in architectural and automotive glazings.Type: GrantFiled: July 22, 1999Date of Patent: August 29, 2000Assignee: Libbey-Owens-Ford Co.Inventors: Srikanth Varanasi, Michael B. Purvis, Paige L. Higby, Kevin V. Goodwin, Gwendolyn A. Young
-
Patent number: 6001753Abstract: Silicate based glass compositions with phosphorus compounds included in the composition as spectral modifiers to impart desirable color and improved energy absorbance properties. The phosphorus compound is generally a metal phosphide which is added to the batch glass composition in amounts greater than 0.05 weight percent prior to melting. The composition and method result in a finished glass suitable for use in architectural and automotive glazings.Type: GrantFiled: December 11, 1997Date of Patent: December 14, 1999Assignee: Libbey-Owens-Ford Co.Inventors: Srikanth Varanasi, Michael B. Purvis, Paige L. Higby, Kevin V. Goodwin, Gwendolyn A. Young
-
Patent number: 5928974Abstract: A process and glass batch composition are provided for producing a soda-lime-silica glass containing oxides of iron. The process includes admixing, heating and melting a soda-lime-silica float glass batch mixture in which wuestite is included as at least a partial source of the iron oxides in the resulting glass.Type: GrantFiled: November 4, 1998Date of Patent: July 27, 1999Assignee: Libbey-Owens-Ford Co.Inventor: Bret E. Penrod
-
Patent number: 5641716Abstract: A neutral, generally green colored, infrared energy and ultraviolet radiation absorbing glass composition comprises conventional soda-lime-silica float glass ingredients, a relatively high concentration of moderately reduced iron, and titanium oxide(s). The resultant glass exhibits an Illuminant A visible light transmittance of at least 70%, a total solar energy transmittance not greater than about 46%, and an ultraviolet radiation transmittance not greater than approximately 38%, at selected glass thicknesses in the range of 3 mm to 5 mm. The titanium oxide(s) as well as at least a portion of the iron in the glass is provided by the inclusion of the mineral ilmenite in the glass batch formulation.Type: GrantFiled: May 31, 1996Date of Patent: June 24, 1997Assignee: Libbey-Owens-Ford Co.Inventors: Paige L. Higby, Bret E. Penrod, J. Joseph Cheng, Rodney G. Baker
-
Patent number: 5523263Abstract: A neutral, generally green colored, infrared energy and ultraviolet radiation absorbing glass composition comprises conventional soda-lime-silica float glass ingredients, a relatively high concentration of moderately reduced iron, and titanium oxide(s). The resultant glass exhibits an Illuminant A visible light transmittance of at least 70%, a total solar energy transmittance not greater than about 46%, and an ultraviolet radiation transmittance not greater than approximately 38%, at selected glass thicknesses in the range of 3mm to 5mm. The titanium oxide(s) as well as at least a portion of the iron in the glass is provided by the inclusion of the mineral ilmenite in the glass batch formulation.Type: GrantFiled: August 26, 1994Date of Patent: June 4, 1996Assignee: Libbey-Owens-Ford Co.Inventor: Bret E. Penrod
-
Patent number: 5521128Abstract: A neutral gray, heat absorbing soda-lime-silica glass having at 4 mm. control thickness a light transmittance using illuminant A of 10.0% to 55.0%, ultra violet transmittance less than 25.0%, and infra red transmittance is less than about 50.0% produced with colorants consisting of 0.90 to 1.90 percent by weight total iron oxide as Fe.sub.2 O.sub.3, 0.002 to 0.025 percent Co, 0.0010 to 0.0060 percent Se, 0.10 to 1.0 percent MnO.sub.2, and 0 to 1.0 percent TiO.sub.2. The flat glass products having such a composition is particularly suitable for use as a privacy glass or sun roof product in trucks and automobiles.Type: GrantFiled: August 26, 1994Date of Patent: May 28, 1996Assignee: Ford Motor CompanyInventors: James V. Jones, Edward N. Boulos
-
Patent number: 5478783Abstract: An infrared and ultraviolet absorbing soda-lime-silica glass of a neutral tint containing 0.3% to 0.7% by weight total iron expressed as Fe.sub.2 O.sub.3, together with amounts of Se, Co.sub.3 O.sub.4 and a ferrous iron content to provide a ratio of ferrous iron to total iron in the range of 21 to 34. NiO and TiO.sub.2 may be added to the glass. The resultant glass, in a nominal 4 mm thickness, has a visible light transmission of at least 70% and a direct solar heat transmission at least 12 percentage points below the visible light transmission. The iron in the glass is preferably provided by the inclusion of the mineral wuestite in the glass batch formulation.Type: GrantFiled: August 3, 1994Date of Patent: December 26, 1995Assignee: Libbey-Owens-Ford Co.Inventors: Paige L. Higby, Bret E. Penrod
-
Patent number: 5462570Abstract: A method and apparatus of reclaiming hazardous inorganic wastes to produce an environmentally benign abrasive for use in loose grain processes, as a coated or bonded abrasive, or as a polishing grain. A tough and useful abrasive, with a MOH hardness of 7 to 8, is manufactured from emission control dusts of the aluminum industry or sludges from other industries, and may include small amounts of lead and cadmium oxides as toughening agents. The abrasive particles are sized by air sifting or by water sedimentation separating methods. The process for the manufacture of abrasive material comprises the steps of removing soluble salts from a waste stream by hot water extraction; using a computer matrix to group the waste stream into different batches for mixing with other glass-making materials to form a batch mixture; oxidizing the organic compounds contained in the batched mixture; melting the batch mixture to form a glasseous substance; and fritting the glasseous substance to form the abrasive.Type: GrantFiled: October 5, 1993Date of Patent: October 31, 1995Assignee: Dunkirk International Glass and Ceramics CorporationInventors: Gerald P. Balcar, Anurag Dwivedi
-
Patent number: 5112778Abstract: An infrared energy and ultraviolet radiation absorbing green-colored high total iron containing soda-lime-silica glass batch includes typical soda-lime-silica glass batch ingredients, an ultraviolet radiation absorbing quantity of a cerium containing compound, a high amount of total iron, and a surprisingly small amount of carbon which eliminates silica scum formation in the melt and silica inclusion faults in the finished glass.Type: GrantFiled: May 13, 1991Date of Patent: May 12, 1992Assignee: Libbey-Owens-Ford Co.Inventors: J. Joseph Cheng, Richard R. Snow, Geoffrey Evans, Charles R. Bamford, Harold B. Milnes
-
Patent number: 5100840Abstract: A briquette batch is prepared from a mixture of glass raw materials containing not only sodium hydroxide as a binder, but also calcined plaster.Type: GrantFiled: January 22, 1991Date of Patent: March 31, 1992Assignee: Nippon Sheet Glass Co., Ltd.Inventors: Yuichi Urabe, Masanobu Kobayashi
-
Patent number: 5004706Abstract: A method of producing molten glass wherein silica is heated with a batch component comprising a sodium alkaline earth silicate which includes a major portion of the sodium in the resultant molten glass. There is also disclosed a batch component for use in glass manufacture, comprising sodium calcium silicate, and, optionally, sodium magnesium silicate. There is further disclosed a method of producing a batch component comprising sodium calcium silicate for use in glass manufacture, the method comprising heating a mixture of (i) a source of sodium oxide and (ii) (a) a source of calcium silicate or (b) a source of calcium oxide and a source of silica, at a temperature of greater than about 800.degree. C.Type: GrantFiled: December 7, 1988Date of Patent: April 2, 1991Assignee: Pilkington plcInventor: Clive F. Dickinson
-
Patent number: 4931413Abstract: Glass ceramic precursor compositions comprise from about 15 to about 75 percent by weight of titanium diboride and from about 10 to about 85 percent by weight of a silica compound, such as colloidal silica. The glass ceramic precursor compositions may also contain an amount up to about 60 percent by weight of an intemetallic compound, such as silicon carbide. Upon firing of the precursor compositions, glass ceramic materials are formed which are useful at high temperatures and in harsh environments as sealants, as protective coatings or as articles of manufacture.Type: GrantFiled: July 5, 1988Date of Patent: June 5, 1990Assignee: Toyota Jidosha Kabushiki KaishaInventors: Richard L. Weir, Jeannine A. Pearsall
-
Patent number: 4920080Abstract: Silica is reacted with sodium carbonate to form sodium silicate as a preliminary step in a glass melting process. Preferably, calcium carbonate-containing batch materials are calcined separately and then combined with the sodium silicate as liquefying is initiated. The materials may be substantially free of bubble-producing carbonates as the molten phase begins to form.Type: GrantFiled: August 19, 1988Date of Patent: April 24, 1990Assignee: PPG Industries, Inc.Inventor: Henry M. Demarest, Jr.
-
Patent number: 4810675Abstract: A process for making a body suitable for use as an additive for incorporation in a plastic, which comprises the steps of forming a blend of glass-forming materials, converting the blend of glass-forming materials into a solidified porous form, and heating such solidified porous blended glass-forming materials to form an exterior glassy shell thereon; as well as a lightweight body made by such process, and an article of manufacture incorporating such body.Type: GrantFiled: March 3, 1987Date of Patent: March 7, 1989Assignee: Potters Industries, Inc.Inventor: Robert Dejaiffe
-
Patent number: 4608352Abstract: The present invention relates to neutron-absorbent oxide or oxynitride glasses containing gadolinium and a process for their preparation.The glasses according to the invention, which incorporate silicon, aluminum, oxygen or oxygen and nitrogen, additionally contain gadolinium in a proportion of approximately 5 to 15 atom %.Type: GrantFiled: September 30, 1985Date of Patent: August 26, 1986Assignee: Centre National de la Recherche Scientifique (CNRS)Inventors: Yves Laurent, Patrick Verdier
-
Patent number: 4588700Abstract: A coating is provided whih substantially lengthens the life of carbon and graphite electrodes used in electrical arc processes for the manufacture of ferrous metals. The coating forms a silica-phosphorus glass upon the electrodes.Type: GrantFiled: July 2, 1984Date of Patent: May 13, 1986Assignee: Nalco Chemical CompanyInventor: Frederick V. Reven
-
Patent number: 4558015Abstract: A composition for forming a high temperature, acid and alkali resistant refractory fiber. The compositional formulation, by weight, is 56-76% silica, 12-33% alumina, and 3-22% zirconia. These fibers are chemically resistant in both acidic and alkaline environments even when heat treated to temperatures exceeding 500.degree. F. (260.degree. C.) in such environments.Type: GrantFiled: February 4, 1985Date of Patent: December 10, 1985Assignee: Manville Service CorporationInventors: Wendell G. Ekdahl, Asit R. Chaudhuri, William C. Miiller
-
Patent number: 4555492Abstract: A composition for forming a high temperature, alkali resistant refractory fiber. The compositional formulation, by weight, is 46-52% silica, 32-38% alumina, 13-18% zirconia with a silica to zirconia ratio in the range from 2.6 to 3.8. These fibers have a maximum service temperature in the range of 2550.degree. F. (1400.degree. C.) to 2650.degree. F. (1455.degree. C.) and exhibit better shrinkage resistance than similarly rated commercially available refractory fiber.Type: GrantFiled: March 1, 1984Date of Patent: November 26, 1985Assignee: Manville Service CorporationInventors: Wendell G. Ekdahl, Asit R. Chaudhuri, William C. Miiller
-
Patent number: 4537862Abstract: Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1.9% by weight. The compositions contain B.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2 and rare earth oxides, the weight ratio of ZrO.sub.2 to rare earth oxides being critical and being about 1/1 to 1.4/1.Type: GrantFiled: April 27, 1984Date of Patent: August 27, 1985Assignee: Owens-Illinois, Inc.Inventors: Josef Francel, Uriah Horn, Daniel R. Stewart
-
Patent number: 4526603Abstract: The dusting and segregation of the glass batch during the manufacture of opal borosilicate glass can be reduced by adding the phosphorus values to the glass batch as phosphoric acid, and calcium values as limestone, calcium carbonate or calcium oxide.Type: GrantFiled: March 28, 1983Date of Patent: July 2, 1985Assignee: FMC CorporationInventors: Richard L. Lehman, William H. Manring
-
Patent number: 4525462Abstract: Dark blue dyed furnace sight glass of soda-lime-silica further containing carbon and oxides of iron and cobalt with substantially no infrared transmission and which sight glass affords a view of details in the melting operation. Other ingredients may include K.sub.2 O, MgO, Al.sub.2 O.sub.3 or ZrO.sub.2.Type: GrantFiled: May 26, 1983Date of Patent: June 25, 1985Assignee: Deutsche Spezialglas AGInventor: Werner Behr