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| Number | Title | Issue Date |
| 7291571 | Crystallizable glass and the use thereof for producing extremely solid and break resistant glass-ceramics having an easily polished surface The invention relates to crystallizable aluminosilicate magnesium-containing glass which is used for producing extremely solid and break-resistant glass-ceramics having an easily polished surface. The inventive crystallizable glass contains 5-33 mass % of SiO2 | 11/06/2007 |
| 7229939 | Multilayer ceramic substrate and method for manufacture thereof A multilayer ceramic substrate which is obtained by firing multilayers of ceramic green sheets each having a dielectric layer, made of a glass-ceramic material comprising a mixture of alumina and a glass containing at least Si and Ca, and an electrode layer made of ... | 06/12/2007 |
| 7166549 | Antimicrobial, anti-inflammatory, wound-healing and disinfecting glass and use thereof The invention relates to an antimicrobial, anti-inflammatory and disinfecting glass, whereby the glass comprises: 30–95 wt. % SiO2,0–40 wt. % Na 2O, 0–40 wt. % K2O, 0–40 wt. % Li2O, 0–35 wt. % CaO, 0–10 wt. % M... | 01/23/2007 |
| 7151063 | Glass for multilayer film filter and method for manufacturing the glass Glass can have a high thermal expansion coefficient when it is made up of SiO2, B2O3, Na2O, K2O, MgO and Al2O3; contains a partial crystal; and has a mean linear expansion coefficient not l... | 12/19/2006 |
| 7132054 | Method to fabricate hollow microneedle arrays An inexpensive and rapid method for fabricating arrays of hollow microneedles uses a photoetchable glass. Furthermore, the glass hollow microneedle array can be used to form a negative mold for replicating microneedles in biocompatible polymers or metals. These micr... | 11/07/2006 |
| 6908674 | Jadeite and its production A jadeite material has a thickness in excess of about 1.0 mm and CIELAB indices of L*>42, a*+6. The grain size of the jadeite material is less than about 30 microns and is an equiaxed grain structure. The jadeite material has an optical transmission pe... | 06/21/2005 |
| 6813903 | Method of making forsterite glass-ceramics A composition for a glass-ceramic material that contains a crystallinity of at least about 30% by weight of forsterite components at a liquidus temperature of about 1525° C. or below. The glass-ceramic has a composition, in weight percent on an oxide basis, consist... | 11/09/2004 |
| 6770111 | Pollucite-based ceramic with low CTE A ceramic structure which is pollucite-based and has high refractoriness and high resistance to thermal shock. The inventive structure is suitable in high temperature applications such as a filtering particulates from diesel engine exhaust. ... | 08/03/2004 |
| 6755049 | Method of producing a quartz glass crucible Known is a method of producing a quartz glass crucible in which a crucible base body is provided at least in part with an inner layer in which the formation of cristobalite is induced by using a crystallization promoter. On the basis thereof, in order to provide an ... | 06/29/2004 |
| 6706653 | Glass-ceramic and a process for obtaining it The present invention relates to: a glass-ceramic which is opaque which has a low, or zero thermal expansion coefficient, which contains a solid solution of β-quartz as crystalline phase, which has a specific composition; and, to | 03/16/2004 |
| 6660670 | Ceramics and method of preparing the same Ceramics containing a diopside crystal phase and a cordierite phase, the remainder being a glass phase and/or other ceramic crystal phases, and having an open porosity of not larger than 1%. The ceramics is obtained by firing at from 800 to 1050° C., and... | 12/09/2003 |
| 6519975 | Method of making fluorinated rare earth doped glass and glass-ceramic waveguides The present invention is directed to a fluorinated rare earth doped glass composition and method for making a glass-ceramic optical article therefrom, e.g. optical fiber waveguides, fiber lasers and active fiber amplifiers, having application in the 1300 ... | 02/18/2003 |
| 6403676 | Dental composites comprising ground, densified, embrittled glass fiber filler A composite for a dental restoration is presented comprising ground, densified, embrittled glass fibers together with fillers and a polymeric matrix precursor composition. The ground, densified, embrittled glass fibers are obtained by grinding glass fiber... | 06/11/2002 |
| 6363747 | Glass mold material for precision glass molding A method for making working mold tools for use in a compression molding process for molding optical glass elements from high temperature glasses having Tg 's in the range of from about 400° C. to about 850° C. An yttria aluminosilicate glass ... | 04/02/2002 |
| 6300263 | Low-expansion cordierite glass ceramics A crystalline glass-ceramic article composed of a cordierite phase of cordierite crystals or aggregates of near-parallel crystallites, having a formula of either Mg2 Al4 Si5 O18 or Ax By Mg... | 10/09/2001 |
| 6124223 | ଲ-quartz-based glass-ceramics Nanocrystalline glass-ceramic materials based on ଲ-quartz solid solution Mg-rich phases formed in the system SiO2 --Al2 O3 --MgO--Li2 O--TiO2 (ZnO, BaO, ZrO2, P2 O5).... | 09/26/2000 |
| 6060412 | Crystalline glass, crystallized glass, crystallized glass article, and process for producing crystallized glass article In order to provide a crystallized glass which can be shaped by the redraw forming and a method of manufacturing a crystallized glass article by the redraw forming, the crystallized glass contains precipitated crystals with a maximum grain size not greate... | 05/09/2000 |
| 6034012 | Composite material containing a fibre reinforced vitroceramic matrix and a method of making the same Composite material comprising a CAS+BAS vitroceramic matrix reinforced with SiC fibers and exhibiting a small difference between the thermal expansion coefficients of the matrix and the fibers is obtained by using a matrix having a BaO/(BaO+CaO) molar rat... | 03/07/2000 |
| 6013694 | Dental composites comprising ground, densified, embrittled glass fiber filler A composite for a dental restoration is presented comprising ground, densified, embrittled glass fibers together with fillers and a polymeric matrix precursor composition. The ground, densified, embrittled glass fibers are obtained by grinding glass fiber... | 01/11/2000 |
| 5902758 | Low temperature firing glass-ceramic substrate and production process thereof A low temperature firing glass-ceramic substrate comprising a borosilicate glass, -alumina, γ-alumina, and mullite crystals crystallized out in a dispersed form from the borosilicate glass and the γ-alumina, and a production process of the substr... | 05/11/1999 |
| 5716424 | Method of producing glass substrates with improved long-term rigidity at elevated temperatures Described is a process for the manufacture of glass substrates with improved long-term stability at raised temperatures, in which process a glass substrate is provided with a coating, this coating being prepared from a composition, which was obtained thro... | 02/10/1998 |
| 5698019 | Leucite-containing phosphosilicate glass-ceramic A leucite-containing phosphosilicate glass-ceramic is described which, in addition to a leucite crystalline phase and at least one further crystalline phase, also contains one or more glass phases.... | 12/16/1997 |
| 5578534 | Method of producing Sl3 N4 reinforced monoclinic BaO.multidot.Al2 O3 .multidot.2SiO2 and SrO.multidot.Al.sub. O3 .multidot.2SiO2 ceramic composites A Si3 N4 reinforced aluminosilicate ceramic composite made of A. from about 5 to about 40 weight percent of Si3 N4 reinforcem material; B. from about 15 to about 35 weight percent of the recrystalization products fo... | 11/26/1996 |
| 5558690 | Manufacture of ceramic tiles from spent aluminum potlining The present invention relates to a process for forming glass-ceramic tiles. Spent aluminum potliner containing carbonaceous material, fluorine, and glass forming materials is oxidized under conditions effective to combust the carbonaceous material and vol... | 09/24/1996 |
| 5532194 | Cordierite glass-ceramic and method for manufacturing the same A cordierite glass-ceramic having a cordierite crystal phase as a predominant crystal phase is obtained by melting a base glass consisting in weight percent of: ______________________________________ SiO2 38-50%... | 07/02/1996 |
| 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 |
| 5269826 | Process for producing decorated glass-ceramic articles with treatment with an acid prior to decorating and devitrifying A process for producing decorated glass-ceramic articles is described in which an article of crystallizable glass, prior to being decorated with a ceramic color and then converted into a glass-ceramic article by heat treatment with simultaneous burning-in... | 12/14/1993 |
| 5203901 | Method for converting waste to crystallized glass A processing method is presented for treating sludges from municipal and waste materials. The ashes from such sludges, containing SiO2 as a primary constituent, are treated with additives to tailor the feed material composition. Thermal process... | 04/20/1993 |
| 5166102 | Glass compositions containing oxygen and nitrogen and production of nitroceramics/vetroceramics composites therefrom Glass compositions containing oxygen and nitrogen prepared by melting admixture of magnesia and/or a magnesium silicate, silica and an aluminum nitride produced by reacting ammonia with aluminum oxide, have the formula: Mgx Siy Al O | 11/24/1992 |
| 5100451 | Method of forming vitreous enamel from spherulized particles A method of manufacturing a vitreous enamel body includes forming particles of vitreous material and melting to fuse the particles together to form the body. The particles of vitreous material are spherulized and are selected as to their granulometric pro... | 03/31/1992 |
| 5094677 | Preparation of pollucite ceramics The present invention is directed to a method for synthesizing highly crystalline pollucite articles at temperatures not exceeding 1650° C. The method comprises two general steps: (a) a glass frit is prepared having a composition varying from approximate... | 03/10/1992 |
| 5073180 | Method for forming sealed co-fired glass ceramic structures A method for forming a co-fired glass ceramic structure including the steps of: forming at least one green sheet of a first crystallizable glass in a thermally decomposable binder; metallizing the green sheet with a pattern of conductive paste including c... | 12/17/1991 |
| 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 |
| 5061307 | Crystallized glass having natural-marble-like surface patterns and method of producing the same A crystallized glass having natural-marble-like surface patterns comprising 45 to 75 wt. % of SiO2, 1 to 25 wt. % of Al2 O3, 1 to 20 wt. % of CaO, 0.5 to 17 wt. % of MgO, 0.1 to 18 wt. % of BaO, 0 to 18 wt. % of ZnO, 1 to ... | 10/29/1991 |
| 5053359 | Cristobalite reinforcement of high silica glass A high-density silica glass article with excellent thermal shock characteristics is formed from a high purity vitreous silica containing an aluminum compound as a crystallization aid and having a dense concentration of cristobalite muclei. The aluminum co... | 10/01/1991 |
| 5026412 | Production process of machinable ceramics Machinable ceramics with 30-60 vol. % of fine crystals of fluorophlogopite, a synthetic mica, evenly dispersed in a vitreous matrix is produced using as principal raw materials kaolin and activated clay, which are natural minerals, other than metal oxides... | 06/25/1991 |
| 4940477 | Method for synthesizing topaz The present invention is directed to a method for synthesizing fluorine-containing, aluminosilicate crystals having a stoichiometry approximating that of topaz. The method comprises three basic steps: (1) vapors of a readily-oxidizable compound of silicon and ... | 07/10/1990 |
| 4904291 | Process for the manufacture of open porous sintered bodies being prepronderantly composed of glass ceramics A process for manufacturing open porous sintered bodies with large open pore volume and defined pore diameters and which at least predominantly consist of glass-ceramics. They are obtained by sintering a mixture of sinterable powder and an inorganic solub... | 02/27/1990 |
| 4842630 | Manufacture of glassware articles of improved strength An article of glassware, particularly a glass container, of increased strength is made by a process in which the parison is treated in a manner which will cause the glass in the outer surface layer of the formed glassware article to be in a state of compr... | 06/27/1989 |
| 4828595 | Process for the production of glass The present invention relates to a process for production of a glass by the vacuum melting method using silica as raw material and comprises uniformly preheating a silica powder containing an accelerator for phase conversion to about 800° C.; filling the... | 05/09/1989 |
