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Class 501/4 - Silica containing crystalline phase (e.g., stuffed quartz, crystobalite, etc.)


Subclass of Class 501 - Compositions: ceramic
Definition: Subject matter wherein the crystalline phase comprises silica.
No. of patents: 260
Last issue date: 03/27/2012


1              
NumberTitleIssue Date
8143178Blue beta-quartz glass-ceramic materials, articles made thereof, and fabrication process
The present invention discloses a blue transparent glass-ceramic material comprising β-quartz solid solution as a predominant crystalline phase and process for making same. The glass-ceramic comprises TiO2 as a nucleating agent, sulphur and at least one ...
03/27/2012
8143179Transparent, colorless titania-free beta-quartz glass-ceramic
The invention relates to a transparent and essentially colorless β-quartz glass-ceramic material which is free of TiO2, As2O3, Sb2O3 and phosphates; articles formed from said glass-ceramic material; lithium alu...
03/27/2012
8053381Optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass
An optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass that can be prestressed and the glass ceramic converted therefrom are described. The glass or the glass ceramic has a composition (in % by weight based on oxide) of...
11/08/2011
8043985Crystallized glass, and method for producing crystallized glass
Provided are SiO2—Al2O3-based or Li2O—Al2O3—SiO2-based crystallized glass which has various properties intrinsic to the crystallized glass of the type and which contains an arsenic co...
10/25/2011
7943539Glass-ceramics and method for manufacturing the same
There are provided glass-ceramics comprising, in mass %, 50-60% SiO2, 22-26% Al2O3 and 3-5% Li2O, having an average crystal grain diameter exceeding 100 nm, and having an average linear thermal expansion coefficient of 30Ã...
05/17/2011
7875565Transparent glass-ceramic armor
The invention is directed to transparent glass-ceramic materials for use in transparent armor systems. Applications include armor systems for ground vehicles and aircraft as well as personal protective equipment. The glass-ceramic materials according to the inventio...
01/25/2011
7678720Glass ceramics comprising beta-quartz or beta-quartz solid solution
Glass-ceramics includes Li2O, Al2O3 and SiO2, have an average crystal grain diameter of a predominant crystal phase of 90 nm or below and have crystal grain diameter distribution of 20 nm or below. The glass-ceramics can b...
03/16/2010
7645714Crystallized glass, and method for producing crystallized glass
Provided are SiO2—Al2O3-based or Li2O—Al2O3—SiO2-based crystallized glass that solves the cause of cracking and fracture in forming it into large-size shaped articles, that has homoge...
01/12/2010
7507681Glass-ceramic, articles and fabrication process
Bi-containing glass-ceramic material, especially those containing β-quartz and/or β-spodumene solid solutions as the predominant crystalline phase, and the precursor glass material as well as process of making such glass-ceramic material and articles. The glass-ce...
03/24/2009
7501365Lithium-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...
03/10/2009
7473660β-quartz and/or β-spodumene glass ceramic
The present application discloses: (i) novel glass-ceramic materials containing a solid solution of b-quartz or of β-spodumene as main crystalline phase(s); (ii) articles made from said novel glass-ceramic materials; (iii) lithium alumino-silicate glasses, precurso...
01/06/2009
7465686Glass-ceramic materials, precursor glass thereof and process for making the same
The invention relates to: a method of preparing glass-ceramics of β-quartz and/or of β-spodumene; a method of preparing articles made from said glass-ceramics; novel glass-ceramics of β-quartz and/or of β-spodumene; articles made from said novel glass-ceramics; ...
12/16/2008
7456121Glass-ceramic materials, precursor glass thereof and process-for making the same
The present invention relates to: novel glass-ceramics of β-quartz and/or of β-spodumene; articles made from said novel glass-ceramics; and ithium alumino-silicate glasses, which are precursors of said novel glass-ceramics; methods of preparing said novel glass-ce...
11/25/2008
7404840Chemically stabilized β-cristobalite and ceramic bodies comprising same
A method for rigidifying a fiber-based paper substrate for use in the exhaust system of a combustion device. In the method, a green ceramic fiber-based paper substrate is impregnated with an impregnating dispersion. The impregnated substrate is then dried, calcined ...
07/29/2008
7387838Low loss glass-ceramic materials, method of making same and electronic packages including same
A glass-ceramic is provided having a thermal expansion coefficient in a range of 3-6 ppm/° C., a dielectric constant that is less than 5 and a Quality factor Q of at least 400. The glass-ceramic consists essentially of SiO2 in a range of 45-58 wt %, Al
06/17/2008
7358205Alkali-free glass substrate
An alkali-free glass substrate containing, by mass percent, 50-70% of SiO2, 10-25% of Al2O3, 5-20% of B2O3, 0-10% of MgO, 0-15% of CaO, 0-10% of BaO, 0-10% of SrO and 0-5% of ZnO, also containing SnO2
04/15/2008
7354526Processing method for glass substrate, processed glass product and stress applying apparatus
A processing method for glass substrate of the present invention includes: applying heat and external force to a glass substrate and then cooling it down to thereby form a compression stressed part having a different etching rate from that of other parts with respec...
04/08/2008
7324285Optical elements and imaging optics comprising them
The optical elements are made from an opto-ceramic material that is characterized by high density, transparency for visible light and IR, high refractive index, high Abbe number and outstanding relative partial dispersion. Mixed oxides are sintered to obtain the opt...
01/29/2008
7316986Glass ceramics for laser systems
A glass-ceramic material, particularly for elements in laser systems, and a method for preparing same. The glass-ceramic material may be used for an optical fiber for communication systems and laser systems. The glass-ceramic may include gahnite crystals and optiona...
01/08/2008
7316740Lithium silicate materials
Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength. ...
01/08/2008
7310405High-Z cast reflector compositions and method of manufacture
A scintillator pack comprises an array of scintillator pixels and an x-ray absorbing layer disposed in inter-scintillator regions between the scintillator pixels. The x-ray absorbing layer acts to absorb x-rays and protect underlying regions of the inter-scintillato...
12/18/2007
7306845Optical materials and optical devices
Nanoscale particles, particle coatings/particle arrays and corresponding consolidated materials are described based on an ability to vary the composition involving a wide range of metal and/or metalloid elements and corresponding compositions. In particular, metallo...
12/11/2007
7297645Opalescent glass-ceramic product
An opalescent glass-ceramic product, especially for use as a dental material or as an additive to or component of dental material, including SiO2, Al2O3, P2O5, Na2O, K2O, CaO and Me(IV))O
11/20/2007
7285506Lamp 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
7282713Compositions and methods for scintillator arrays
A composition including at least one of a glass composition and a glass ceramic composition, the composition includes a plurality of scintillator crystals. ...
10/16/2007
7264894Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate
Enclosed are crystallized glasses suitable for a substrate for an information recording medium such as a magnetic disc, optical disc, or optomagnetic disc, a substrate for information recording medium using such a crystallized glass substrate, and an information rec...
09/04/2007
7262144Photostructurable body and process for treating a glass and/or a glass-ceramic
The invention relates to a photostructurable body, in particular glass or glass-ceramic, in which the glass is a multicomponent glass and/or the glass-ceramic is a multicomponent glass-ceramic, in each case having a positive change in refractive index Δn as a resul...
08/28/2007
7226658Electrical sheet having insulating coating and insulating coating
A magnetic steel sheet with an insulating coating having a good punchability, high sliding performance, excellent handleability in processing, and good uniformity and adhesiveness is achieved by forming a chromium-free insulating coating containing 20 parts by mass ...
06/05/2007
7226881Ultra low thermal expansion transparent glass ceramics
There are provided glass-ceramics having an ultra low thermal expansion property and super flat surface capable of coping with lithography for the next generation LSI and component parts for semiconductor equipment such as masks, optical reflecting mirrors, wafer st...
06/05/2007
7220690Glass ceramic having a low thermal expansion
The present invention relates to a novel glass ceramic having a low or small average thermal expansion together with good polishability and processability, to the use of the glass ceramic according to the invention, and to optical components made of the glass cerami...
05/22/2007
7216510Method 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
7205252Method 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
7199066Lamp 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–...
04/03/2007
7194209Interference resistant infrared extension system
An interference resistant infrared receiver and extension system is disclosed. A receiver in accordance with the present invention comprises at least one infrared photodetector configured to detect impinging infrared light of a desired wavelength, an amplifier, coup...
03/20/2007
7186461Glass-ceramic materials and electronic packages including same
A glass-ceramic is provided having a thermal expansion coefficient in a range of 4.0 to 8.5 ppm/° C., a dielectric constant in a range of 5–7 and a Quality factor Q of at least 400. The glass-ceramic consists essentially of SiO2 in a range of 40–55 w...
03/06/2007
7169476Zinc oxide-alumina-silica-based crystallized glass
A zinc oxide-alumina-silica-based crystallized glass is provided, containing zinc oxide, alumina and silica as main components, and zirconia as a nucleating agent. The main components are provided in a ratio of 20–30% by mass of zinc oxide, 15–25% by mass of alu...
01/30/2007
7170154Glass for window of semiconductor package, glass window for semiconductor package, process for production of glass window, and semiconductor package
Provided are a glass for a window which glass is suitably fitted to a semiconductor package made of a plastic and a glass window for the semiconductor package which glass window has various functions, the glass (1) being for use as a window material for a semiconduc...
01/30/2007
7157149Surface-modified glass-ceramics and their preparation
The present invention relates to a product, comprising a body which is delimited by a surface, of a lithium aluminosilicate-based glass-ceramic, as well as to its method of preparation. Characteristically, said glass-ceramic has, on at least one part of said surface...
01/02/2007
7153795Glass and glass-ceramic materials, articles and method of preparing the same
The present invention relates to novel glass and glass-ceramic materials, articles made from said novel glass-ceramics and to methods of preparing said novel glass-ceramics and articles. Said novel, transparent, translucent or opaque glass-ceramics, which contain, a...
12/26/2006
RE39437Negative thermal expansion glass ceramic
A negative thermal expansion glass ceramic having a negative coefficient of thermal expansion, which is a sufficiently large absolute value in a temperature range of −40° C. to +160° C. and a method for producing the same are provided. The negative thermal expan...
12/19/2006
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