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| Number | Title | Issue Date |
| 7297171 | Methods of making ceramics comprising AlO, REO, ZrOand/or HfOand Nb0and/or TaO Methods for making glass-ceramics comprising Al2O3, REO, at least one of ZrO2 or HfO2 and at least one of Nb2O5 or Ta2O5. Glass-ceramics according to the present invention can be... | 11/20/2007 |
| 7285506 | Lamp reflector substrate, glass, glass-ceramic materials and process for making the same The present invention relates to glass, glass-ceramic materials, lamp reflectors and processes for making them. The glass material has a composition, by weight of the total composition, comprising 56-67% SiO2; 9-22% Al2O3; 3.4-3.8% L... | 10/23/2007 |
| 7205252 | Method of making a glass-ceramic article The method produces a glass-ceramic article substantially in the form of a plate with improved high temperature difference resistance or strength. The glass-ceramic article contains keatite mixed crystals (KMK) or high quartz mixed crystals (HQMK) as well as the kea... | 04/17/2007 |
| 7107793 | Lithium-aluminosilicate glass ceramic with high keatite content and structural member made thereof A lithium-aluminosilicate glass ceramic is transformed by a suitable heat treatment into a glass ceramic comprising at least 80 vol.-% of keatite mixed crystals. This may be utilized for the preparation of optical or mechanical high-precision parts having a high tem... | 09/19/2006 |
| 6871514 | Method of making glass, a method and device for the control and setting of the redox state of redox fining agents in a glass melt There is now provided a method and a device for the control and setting of the redox state of redox fining agents in a glass melt, in which method, during the melting process, essentially oxygen gas is blown through the glass melt. ... | 03/29/2005 |
| 6568215 | Method and apparatus for melting a particulate material Apparatus suitable for vitrifying nuclear waste comprises a tunable microwave cavity connected by a first wave guide to a source of microwave energy; cooling coils for cooling the exterior of the cavity; a hopper for loading particulate fusible material t... | 05/27/2003 |
| 6420288 | Process for the preparation of shaped translucent lithium disilicate glass ceramic products A process is described for the preparation of shaped translucent lithium disilicate glass ceramic products which are characterized by high strength and good chemical stability and may be processed by pressing in the plastic state or milling to finished gl... | 07/16/2002 |
| 6327874 | Method for manufacturing a glass-ceramic substrate for a magnetic information storage medium There is provided a glass-ceramic substrate for a magnetic information storage medium having a data zone and a landing zone capable of stably lifting a magnetic head in the landing zone and also capable of reducing the amount of lifting of the magnetic he... | 12/11/2001 |
| 6209352 | Methods of making negative thermal expansion glass-ceramic and articles made thereby An athernal optical device and a method for producing the device, such as an athermal optical fiber reflective grating, are described. The athermal optical fiber reflective grating device comprises a negative expansion substrate, an optical fiber mounted ... | 04/03/2001 |
| 6150027 | Glass composition, structure, and apparatus using the same Provided are a glass such as a sealing glass which contains a rare earth element and crystalline particles, a structure made by sealing with said sealing glass, a magnetic head made by bonding using said sealing glass, and a magnetic recording and reprodu... | 11/21/2000 |
| 5676720 | Method of forming a porous glass substrate A glass material is formed from SiO2, CaO, Na2 O and P2 O5 and the porous, non-crystalline structure is most preferably created by melting the constituents, cooling and pulverizing the resulting glass, and then ... | 10/14/1997 |
| 5550310 | Method for waste for vitrification A waste vitrification apparatus (10) having rotatable mixer impeller (16) functioning as a shaft electrode (60) and metallic vessel (14) functioning as a vessel electrode (62). A stream (12) of waste material and vitrifiable material are mixed and melted ... | 08/27/1996 |
| 5514451 | Conductive via fill inks for ceramic multilayer circuit boards on support substrates Conductive via fill inks for green tapes to be stacked and bonded to a support substrate, the glass used for the green tape having a firing temperature from 850°-950° C., wherein the glass used for the via fill ink has a glass transition temperature tha... | 05/07/1996 |
| 5364426 | High shear mixer and glass melting method A glass melter 30 having a mixing impeller 34 for converting a feed stream 38 supplied to a vessel 32 into a vitrified glass melt 50. Heating means such as electrodes 36 or a gas burner 58 are used to heat the glass melt 50. Electrode 36 arrangements are ... | 11/15/1994 |
| 5229357 | Method of producing superconducting ceramic wire and product A superconducting ceramic wire is produced by melting a superconducting ceramic-forming metal oxide composition, and quenching the melt into a glass which is then formed into a preform of thin plate. The preform is soften and wire-drawn without causing cr... | 07/20/1993 |
| 5173453 | Variably translucent glass-ceramic article and method for making This invention is directed toward of a glass-ceramic article consisting essentially, expressed in terms of weight percent on the oxide basis, of about 64-70% SiO2, 18-22% Al2 O3, 3.3-4% Li2 O, 2-5% ZnO, 0-2% MgO... | 12/22/1992 |
| 5147436 | Method for forming flat glass-ceramic articles This invention contemplates a near net-shape method of making thin glass-ceramic articles possessing substantially uniform thickness and parallel opposing surfaces comprising the steps of: (a) heating the receiving and opposing molding surfaces of a mold ... | 09/15/1992 |
| 5122178 | Process for producing glass doped with dispersed microcrystallites The present invention relates to a process for producing a glass doped with dispersed microcrystallites, which glass is used as a material for sharp cut filter, a material for infrared-transmitting filter, a nonlinear optical material, etc. In the process... | 06/16/1992 |
| 5064460 | Blue transparent glass-ceramic articles This invention is directed to the formation of blue-to-black transparent glass-ceramic articles containing ଲ-quartz solid solution as essentially the sole crystal phase present therein. The articles are prepared by heat treating reduced precursor gl... | 11/12/1991 |
| 5064461 | Blue/gray transparent glass-ceramic articles This invention is directed to the production of transparent glass-ceramic articles demonstrating linear coefficients of thermal expansion of less than 10×10-7 /°C. and exhibiting a blue or gray coloration. The articles are prepared by heat tr... | 11/12/1991 |
| 5061308 | Method of manufacturing readily machinable high strength glass ceramics A method of manufacturing readily machinable high strength glass ceramics includes the steps of: preparing a powder mixture by mixing glass powders 1 and 2, each having a predetermined composition, with each other; and producing a calcined product by gran... | 10/29/1991 |
| 4975416 | Method of producing superconducting ceramic wire A superconducting ceramic wire is prepared from a superconducting ceramic-forming oxide composition by melting, the composition and quenching the melt to form a dense glass, which is soften and wire-drawn in a furnace. The resulting wire is heat-treated t... | 12/04/1990 |
| 4794094 | Process for producing and product of a machinable crystallized glass having needle-like crystals precipitated therein A process for producing a machinable crystallized glass having needle-like crystals precipitated therein, which comprises melting a mixture comprising from 40 to 60 mol % of SiO2, from 6 to 16 mol % of Al2 O3, from 6 to 16... | 12/27/1988 |
| 4781744 | Molding method A mold capable of imparting uniform transparency to the calcium phosphate type crystallized glass, in which crystals of calcium metaphosphate are present at the shaping surface of the mold which comes into contact with the material to be shaped.... | 11/01/1988 |
| 4519828 | Transparent glass-ceramics containing mullite This invention is concerned with the production of substantially transparent glass-ceramic articles containing mullite as the predominant crystal phase which can be prepared by crystallizing in situ precursor glasses capable of being melted at temperature... | 05/28/1985 |
| 4473653 | Ballistic-resistant glass-ceramic and method of preparation A composition and method of making a high strength semi-crystalline ceramic material of the lithium, aluminum, silicon oxides system type. The composition is characterized by a relatively narrow range of lithium, aluminum, silicon and potassium oxides to ... | 09/25/1984 |
| 4414282 | Glass ceramic seals to inconel A glass ceramic composition prepared by subjecting a glass composition comprising, by weight, 65-80% SiO2, 8-16%, Li2 O, 2-8% , Al2 O3, 1-8% K2 O, 1-5% P2 O5 and 1.5-7% B2 ... | 11/08/1983 |
| 4397670 | Method of making alkali metal, calcium fluorosilicate glass-ceramic articles The instant invention is directed to the production of highly crystalline glass-ceramic articles demonstrating high intrinsic mechanical strength and toughness containing crystals of canasite and/or agrellite and/or fedorite as the predominant crystal pha... | 08/09/1983 |
| 4395271 | Method for making porous magnetic glass and crystal-containing structures The present invention provides a method for making porous bodies of magnetic glass and/or crystal-containing materials having magnetic crystals incorporated therein with dimensions less than about 1000A. Preferably, the crystals have dimensions less than ... | 07/26/1983 |
| 4366253 | Phosphate glass compositions, and glass-ceramic materials, and methods of making the same Phosphate glass compositions are described comprising from 8 to 35 wt % P2 O5, from 8 to 48 wt % SiO2 and GeO2, provided that the GeO content is not more than 6 wt %, from 3 to 18 wt % B2 O3 | 12/28/1982 |
| 4362819 | Moldable fluoroaluminophosphate glasses The present invention is directed to the production of essentially dry alkali metal (R1) aluminofluorophosphate glasses optionally containing at least one divalent metal (R2) which exhibits a transition temperature below about 350° ... | 12/07/1982 |
| 4358306 | Method for molding a fused quartz glass block The invention provides a method for molding a block of a fused quartz glass by the plastic deformation of a starting block with smaller dimensions at a high temperature. The molding procedure is carried out in a graphite mold under compression at a temper... | 11/09/1982 |
| 4341543 | Method of making strengthened transparent glass-ceramic, partially body-crystallized, and surface-crystallized glass articles This invention is directed to means for producing strengthened, transparent glass-ceramic, partially body-crystallized, and surface-crystallized glass articles wherein beta-quartz solid solution constitutes the predominant crystal phase. The inventive met... | 07/27/1982 |
| 4341544 | Method of making peraluminous nepheline/kalsilite glass-ceramics The present invention is concerned with glass-ceramic articles which are extremely resistant to impact and spontaneous delayed breakage, are capable of being sawn with a diamond wheel to a depth of over one-third the cross section thereof without breakage... | 07/27/1982 |
| 4336303 | Integral vitreous article composed of opaque and transparent portions There is disclosed an integral vitreous article composed of an opaque portion encased within a thin surface layer of transparent, colored glass. The article has a uniform chemical composition of an alkaline aluminosilicate nature, the opaque portion conta... | 06/22/1982 |
| 4329400 | Glass article having a pattern formed in its surface and method There is disclosed an integral vitreous article composed of an opacified interior portion encased within a surface layer of glass that is transparent except for an opacified zone of predetermined configuration. The article may be produced by momentarily c... | 05/11/1982 |
| 4328299 | Polychromatic glasses and method Polychromatic glass articles and methods of producing such articles are disclosed in which the glass is activated by exposure to ultraviolet radiation and contains as a sensitizing agent an oxide of copper, samarium, terbium, praeseodymium, or europium.... | 05/04/1982 |
| 4314909 | Highly refractory glass-ceramics suitable for incorporating radioactive wastes This invention is concerned with the production of glass-ceramics especially suitable for incorporating radioactive wastes. The inventive glass-ceramics contain at least two crystal phases selected from the group of pollucite, mullite, monazite, and, opti... | 02/09/1982 |
| 4310595 | Peraluminious nepheline/kalsilite glass-ceramics The present invention is concerned with glass-ceramic articles which are extremely resistant to impact and spontaneous delayed breakage, are capable of being sawn with a diamond wheel to a depth of over one-third the cross section thereof without breakage... | 01/12/1982 |
| 4309218 | Chemically durable phosphate opal glasses This invention relates to the manufacture of spontaneous opal glasses demonstrating a dense, milky-white appearance, excellent resistance to attack by water and detergents, softening points in excess of 760° C., and containing either NaBaPO4 o... | 01/05/1982 |
