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| Number | Title | Issue Date |
| 7371702 | Translucent and radio-opaque glass ceramics Radio-opaque glass ceramics are described which have high chemical durability and adjustable translucency, brightness and coefficient of thermal expansion. ... | 05/13/2008 |
| 7223420 | Powder mixture for resorbable calcium phosphate biocements The present invention relates to a powder mixture for resorbable calcium phosphate biocements, which mixture consists of 40–99% by volume of powder having a particle size of 0.1–10 μm, 1–20% by volume of powder having a particle size of 10–43 μm and 0–59... | 05/29/2007 |
| 7216510 | Method for the forming of glass or glass ceramics A process for forming glass or glass ceramics is disclosed, wherein a glass ceramics form (12) is made from a starting glass by molding, which is transformed by a heat treatment into a keatite glass ceramic comprising predominantly keatite mixed crystals. Wit... | 05/15/2007 |
| 7204942 | Method of making a fluoride crystalline optical lithography lens element blank The method of making a high quality fluoride crystalline optical microlithography lens element blank includes crystallizing a fluoride crystalline member with dimension ≧200 mm from a melt, annealing the fluoride crystalline member and qualifying the resulting mem... | 04/17/2007 |
| 7137277 | Method and device for producing colored glasses The invention relates to a method and a device for producing colored glasses. The aim of the invention is to obtain a paricularly intimate mixture and to enable a quick change of the melt at the same time. To this end, the following procedure steps are applied: a me... | 11/21/2006 |
| 6772608 | Method for producing UV polarizers The invention relates to a method for producing UV polarizers, according to which spheroid particles situated near the surface of the glass are incorporated into the support material (primarily standard float glass) in a novel arrangement. According to the method fo... | 08/10/2004 |
| 6767854 | Glassy-crystalline material with low solubility and process of preparing the same The invention refers to a material which is chemically long-term stable in a neutral or slightly acid environment and which can be used both as bioactive bone replacement material, e.g. in the form of a coating applied onto metallic prosthesis sticks by thermal spra... | 07/27/2004 |
| 6645893 | Glass suitable for optical functional elements and process for producing same 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) pr... | 11/11/2003 |
| 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 |
| 6352949 | Fluoro glass ceramic showing photostimulable properties A glass ceramic material for storing energy of X-rays and releasing said energy by photo-stimulation comprising a fluoride glass matrix containing micro-crystalline particles, said particles having an average particle size, d, so that d | 03/05/2002 |
| 6281151 | Transparent lanthanum fluoride glass-ceramics The present invention relates to a transparent glass-ceramic material which includes a glass matrix and a crystalline phase of lanthanum fluoride crystals in the glass matrix, where the transparent glass-ceramic material contains no silica. The present in... | 08/28/2001 |
| 6167727 | Process for the production of polarizing glass A process for producing a polarizing glass containing shape-anisotropic metallic particles dispersed in an oriented state therein, which comprises drawing a glass preform containing metallic halide particles dispersed therein while its viscosity being hel... | 01/02/2001 |
| 6130178 | Strong miserite glass-ceramics The present invention is directed at a glass-ceramic having high strength and toughness and containing miserite as a predominant crystal phase. The glass-ceramic has a composition calculated in terms of a weight percent on the oxide basis comprising 40-68... | 10/10/2000 |
| 5955388 | Transparent oxyflouride glass-ceramic composition and process of making A transparent class ceramic composition includes an oxide component, a rare earth component, a halide component, and a substantially pure rare earth-halide (e.g., REF3) crystal component. A method for making a transparent oxyfluoride glass incl... | 09/21/1999 |
| 5952253 | Transparent apatite glass ceramics The present invention relates to a transparent glass-ceramic article which includes a glass matrix and a crystalline phase of apatite crystals in the glass matrix. The present invention further relates to a method of producing the transparent glass-cerami... | 09/14/1999 |
| 5840095 | Method and apparatus for producing flat metal powder directly from melt The yield of flat powder (6) of Al, Mg or their alloy is enhanced by forming, on a rotary cooling body (4), a film (8) which can prevent the flat metal powder (8) from sticking to the cooling surface. The film (8) adheres to the cooling surface at a force... | 11/24/1998 |
| 5540745 | Glasses for laser protection Cuprous halide- or a cuprous-cadmium halide-containing glass articles are produced which are essentially completely opaque to ultraviolet radiation and can De essentially completely opaque to radiation within the region of wavelengths of up to 550 nm, but... | 07/30/1996 |
| 5480844 | Crystallized-glass-made artificial nucleus for pearl, production process of the artificial nucleus, and pearl produced using the artificial nucleus An artificial nucleus made of a crystallized glass is provided for use in the production of a pearl. The crystallized glass has been produced using a batch having the following composition: SiO2 . . . 40-65 wt. % MgO . . . 3-16 wt. % MgF2... | 01/02/1996 |
| 5147435 | Method for suppressing crystallization of fluoride glass articles by treatment with inorganic fluoride Crystallization of a fluoride glass article is suppressed by treating the surface(s) of the fluoride glass article with a solution of a fluorine-containing alkali metal compound or a fluorine-containing ammonium compound such as, e.g., LiPF6, N... | 09/15/1992 |
| 5120340 | Bioreactive material for a prosthesis or composite implants A method is disclosed for preparing an improved bioreactive material of the glass or partially crystallized glass type for bone prostheses or dental implants, which can be welded to bone tissue by chemical bonding. The material consisting essentially of, ... | 06/09/1992 |
| 5102833 | Strengthening glass articles with electromagnetic radiation and resulting product Alkali metal- and alkaline earth metal-oxide aluminosilicate amorphous glass articles can be strengthened by providing such glass with a cerium dioxide sensitizer and a nucleating agent, irradiating the article with electromagnetic radiation, heating the ... | 04/07/1992 |
| 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 |
| 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 |
| 4978376 | Crystalline optical fiber and its method of manufacture A crystalline metal halide optical fiber having a two or a three layer structure is provided. The core consists of relatively small crystals. A crust surrounds the core and has the same composition but consists of relatively large crystals. Optionally, an... | 12/18/1990 |
| 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 |
| 4747876 | Dental crown material A dental crown formed of a dental crown material comprising crystallized glass containing 40 to 45% by weight of SiO2, 11 to 15% by weight of Al2 O3, 16 to 23% by weight of MgO, 6.5 to 8% by weight of F, 4.0 to 7.0% by wei... | 05/31/1988 |
| 4652534 | High-strength glass ceramic containing apatite crystals and a large quantity of wollastonite crystals and process for producing same Glass ceramic comprising apatite crystals and at least 50% by weight of wollastonite crystals and a process for producing the same are disclosed. The glass ceramic contains from 45 to 56% by weight of CaO, from 1 to less than 10% by weight of P2 | 03/24/1987 |
| 4622057 | Process for making thick-walled ceramic bodies from synthetic micas The instant invention is directed to the production of boards and other relatively thick-walled shapes of various configurations from inorganic silicates. The method for preparing such products involves five general steps: first a fully or predominantly c... | 11/11/1986 |
| 4507369 | Glass ceramic ionic conductor materials and method of making Solid, crystalline glass ceramic compositions which are useful as ionic conductor materials, especially for use as solid electrolytes in high temperature, high energy density storage batteries. The glass ceramics are derived from sodium or calcium borates... | 03/26/1985 |
| 4454237 | Organic-inorganic composites containing synthetic mica This invention is directed to the preparation of an organic-inorganic composite body demonstrating hydrophobic behavior containing crystals of an organic polycation-exchanged lithium and/or sodium water-swelling mica, the organic polycation being selected... | 06/12/1984 |
| 4427429 | Method for the opalization of glass The invention comprises a method for the continuous opalization of glass, wherein an opalescent agent is added to the molten glass in the forehearth situated between a glass furnace and the automatic forming machine, followed by adjustment of the glass te... | 01/24/1984 |
| 4414164 | Process and apparatus for producing preforms for optical fibers In order to produce a preform or parison from which an optical fiber can be drawn, a vitrifiable substance such as silicon chloride and a doping agent such as germanium chloride, for example, are fed in liquid form and at room temperature to a spray nozzl... | 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 |
| 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 |
| 4302235 | Producing a multi-color image in polychromatic glass There is disclosed a method of producing an image of an original multi-color subject in polychromatic glass by employing, as a mask during initial exposure of the glass, a continuous tone, ultra-violet transmitting, film negative in which each color in th... | 11/24/1981 |
| 4295872 | Producing a multi-color image in polychromatic glass There is disclosed a method of producing an image of an original multi-color subject in polychromatic glass by employing as a masking means, during initial exposure of the glass, high contrast film positives embodying the subject in the form of half tone ... | 10/20/1981 |
| 4290794 | Method of making colored photochromic glasses The instant invention is concerned with a method for producing shades of a tint in a photochromic glass, the hue of which will be essentially permanent even after subjecting the glass to temperatures up to about the strain point of the glass. Silver halid... | 09/22/1981 |
| 4259406 | Method for producing selectively tinted photochromic glass lens and products Selectively tinted photochromic glass lenses, such as photochromic lenses with a fixed tint gradient in transmittance ranging from a dark tint at the top of the lens to pale or no tinting at the bottom of the lens, are provided by a process comprising sur... | 03/31/1981 |
