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| Number | Title | Issue Date |
| 8281620 | Apparatus for manufacturing vitreous silica crucible During fabrication of a vitreous silica crucible, contamination of the vitreous silica crucible due to wear particles and debris of components of an apparatus for manufacturing a vitreous silica crucible is reduced by preventing damage and wear of the components of ... | 10/09/2012 |
| 8240169 | Vitreous silica crucible manufacturing apparatus A vitreous silica crucible manufacturing apparatus includes a plurality of carbon electrodes configured to heat and melt raw material powder by arc discharge, and a value of a ratio R2/R1 of a diameter R2 of a front end of each of the carbon ele... | 08/14/2012 |
| 7954341 | Method for making a blank from material, particularly for an optical component for use in microlithography The invention is concerned with a material which shows low absorption for UV radiation having a wavelength below 250 nm, low birefringence, high chemical resistance and high radiation resistance and which is therefore particularly usable for making optical component... | 06/07/2011 |
| 7361207 | System and method for electrostatically depositing aerosol particles A system useful for electrostatic deposition (ESD) of aerosol particles and methods of depositing the aerosol particles onto a substrate are disclosed. The ESD system and the method of the present invention are useful for electrostatically depositing nanoparticles p... | 04/22/2008 |
| 7309527 | Hydrophilic surfaces carrying temporary protective covers A substrate carrying a temporary protective cover and related methods of producing and processing substrates are described. In one embodiment, a substrate bears a hydrophilic coating carrying a temporary protective cover that protects the hydrophilic coating against... | 12/18/2007 |
| 7305852 | Method for manufacturing quartz glass ingot The invention provides a method for manufacturing a large scale quartz glass slab ingot in a flame hydrolysis reaction in a furnace, including the steps of rotating the furnace, depositing a fused silica on a furnace bed, and extending the deposit outwardly by heati... | 12/11/2007 |
| 7294404 | Graded photocatalytic coatings The invention provides graded photocatalytic coatings. In one aspect, the invention provides a substrate carrying a photocatalytic coating that includes a first graded film region and a second graded film region. The first graded film region has a substantially cont... | 11/13/2007 |
| 7089766 | Method of forming optical fiber preforms Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphe... | 08/15/2006 |
| 6988377 | Method for making extreme ultraviolet lithography structures A method for forming EUV LITHOGRAPHY GLASS STRUCTURES WITH VOIDS is disclosed which includes forming a slurry mixture including silica soot particles, and inserting the slurry mixture into a casting mold. The method provides low weight mass reduced rigid glass struc... | 01/24/2006 |
| 6964731 | Soil-resistant coating for glass surfaces A glass article which has a water-sheeting coating and a method of applying coatings to opposed sides of a substrate are described. In one embodiment, a glass sheet is provided bearing a sputtered water-sheeting coating comprising silica on an exterior surface and b... | 11/15/2005 |
| 6946416 | Fused silica having improved index homogeneity Fused silica articles exhibiting improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum. The articles also exhibit induced transmission when irradiated ... | 09/20/2005 |
| 6941772 | Apparatus and method for manufacturing glass-base-material An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which i... | 09/13/2005 |
| 6939446 | Soil-resistant coating for glass surfaces A glass article which has a water-sheeting coating and a method of applying coatings to opposed sides of a substrate are described. In one embodiment, a water-sheeting coating 20 comprising silica is sputtered directly onto an exterior surface of the glass. T... | 09/06/2005 |
| 6921579 | Temporary protective covers A substrate carrying a temporary protective cover and related methods of producing and processing substrates are described. In one embodiment, a substrate has a durable exterior surface bearing a temporary protective cover that protects the durable surface against c... | 07/26/2005 |
| 6916370 | Quartz glass crucible for pulling up silicon single crystal and method for producing the same An object of the invention is to provide a quartz glass crucible for pulling up silicon single crystal and a method for producing the same, suitable for improving the productivity of the crucible and the quality of the silicon single crystal, which, by forming a cry... | 07/12/2005 |
| 6902813 | Hydrophilic surfaces carrying temporary protective covers A substrate carrying a temporary protective cover and related methods of producing and processing substrates are described. In one embodiment, a substrate bears a hydrophilic coating carrying a temporary protective cover that protects the hydrophilic coating against... | 06/07/2005 |
| 6799441 | Furnaces for fused silica production Methods and apparatus for producing fused silica members having high internal transmission are disclosed. The apparatus and methods are capable of producing fused silica having internal transmission of at least 99.65%/cm at 193 nm. ... | 10/05/2004 |
| 6763682 | Process and apparatus for manufacturing a glass ingot from synthetic silica A method and apparatus for the manufacture of synthetic vitreous silica ingots involves the production of a melt of synthetic vitreous silica in a crucible (35) within a refractory furnace (31), and the continuous withdrawal of an ingot (43) thr... | 07/20/2004 |
| 6672107 | Quartz glass crucible and process for the production thereof In order to provide a quartz glass crucible distinguished by high purity, high opacity and/or low transmissibility in the IR spectrum, it is proposed on the basis of a known quartz glass crucible of opaque quartz glass with a crucible body symmetrical in ... | 01/06/2004 |
| 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 |
| 6553787 | Method for manufacturing quartz glass crucible Present invention suppresses undesirable effects of the bubbles trapped in a silica glass crucible on single crystallization during the pulling process under a high-temperature load. When raw material powder is melted in a mold 1, graphite components of e... | 04/29/2003 |
| 6546754 | Apparatus for silica crucible manufacture An apparatus for manufacture of quartz crucibles comprising a hollow mold having a bottom wall portion and a side wall portion and defining a hollow space therein. The walls of the mold include a plurality of openings to facilitate gas passage therethroug... | 04/15/2003 |
| 6463761 | Method and apparatus for minimizing air infiltration in the production of fused silica glass Fused silica boules (19) having improved radial homogeneity are produced by controlling the air flow around the boule (19) during its formation. The boule is formed in a cup-like containment vessel (13) which collects silica particles from a plurality of ... | 10/15/2002 |
| 6340650 | Ceramic products made from waste glass, raw batch formulations, and method The invention provides a method to transform large quantities of waste glass into useful ceramic products by a low-cost manufacturing process. The major steps of the method consist of dry preparation of glass powder, granulation with a non-aqueous organic... | 01/22/2002 |
| 6314766 | Apparatus for minimizing air infiltration in the production of fused silica glass Fused silica boules (19) having improved radial homogeneity are produced by controlling the air flow around the boule (19) during its formation. The boule is formed in a cup-like containment vessel (13) which collects silica particles from a plurality of ... | 11/13/2001 |
| 6302957 | Quartz crucible reproducing method An inner surface of a quartz crucible after being used is cleaned by an acid liquid, and an extraneous material adhered to its inner surface is removed. The inner surface after the extraneous material has been removed is heat treated at 1600° C. or more,... | 10/16/2001 |
| 6143073 | Methods and apparatus for minimizing white point defects in quartz glass crucibles Methods and apparatus for manufacturing silica crucibles 9 containing few, if any, white point defects. The white point defects are reduced by decreasing the amount of silica vapor condensing on electrodes 4,5,6 used in the manufacturing process. The sili... | 11/07/2000 |
| 6074967 | Production of rock wool A method of processing material for use in production of rock wool, comprises providing the material in finely divided form; mixing the finely divided material with a fibrous binding agent; and forming the mixture into solid blocks. The resulting blocks (... | 06/13/2000 |
| 6032488 | Method of manufacturing a porous inhomogeneous material The invention is used to manufacture an inhomogeneous medium whose porosity and permeability undergo rapid transitions from one point to another of its volume, by juxtaposing different materials without creating a barrier. Such a transition is made by jux... | 03/07/2000 |
| 6009724 | Process for preparing glass and for conditioning the raw materials intended for this glass preparation The invention concerns a process for preparing glass, more specifically glass powder or glass films, together with a process for conditioning the raw materials intended for preparing glass characterized in that raw materials are converted to freely flowin... | 01/04/2000 |
| 6007786 | Device for doping silica powder A device for doping silica powder with a dopant includes an arrangement for receiving silica soot particles or previously fabricated silica granules. The particles or granules contained in the receiving arrangement are heated to a temperature sufficient t... | 12/28/1999 |
| 5983671 | Apparatus and method for manufacturing foamed material An apparatus and method for the preferably continuous manufacture of foamed material using a furnace are provided. A two-part mold mechanism is provided that includes an upper portion and a lower portion that are each endless loops and cooperate with one ... | 11/16/1999 |
| 5951730 | Furnace for producing fused silica glass Fused silica boules (19) having improved off-axis homogeneity are produced by controlling the air flow around the boule (19) during its formation. The boule is formed in a containment vessel (13) which collects soot from a plurality of burners (14). The c... | 09/14/1999 |
| 5922100 | Precision burners for oxidizing halide-free silicon-containing compounds A precision burner for oxidizing halide-free, silicon-containing compounds, such as, octamethylcyclotetrasiloxane (OMCTS), is provided. The burner includes a subassembly (13) which can be precisely mounted on a burner mounting block (107) through the use ... | 07/13/1999 |
| 5895511 | Method of producing a decorative construction material A method of producing a resilient decorative construction material from waste products such as slag granulate or waste glass granulate is taught. The waste glass granulate may contain paper, adhesives, plastic, or other contaminants. The construction mate... | 04/20/1999 |
| 5895527 | Single crystal pulling apparatus The invention relates to a single crystal pulling apparatus comprising; an outer crucible 11 positioned inside a chamber (gas tight container) 2, for storing a semiconductor melt 21, and an inner crucible 30 comprising a cylindrical partition body, mounte... | 04/20/1999 |
| 5837024 | Process for the production of quartz glass bodies An essentially cylindrical porous blank is formed by the deposition of SiO2 particles onto the lateral cylindrical surface of a cylindrical mandrel, rotating around its longitudinal axis; this blank is provided with a holding element of quartz ... | 11/17/1998 |
| 5830251 | Manufacture of ceramic tiles from industrial waste The present invention relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the so... | 11/03/1998 |
| 5762672 | Method for producing a quartz glass crucible In a quartz glass crucible obtained by heating and fusing a rotating layer (3) charged with a powder of silicon dioxide, impurity elements are controlled so that copper, chromium, and nickel each amount to 0.5 ppb or less, iron amounts to 120 ppb or less,... | 06/09/1998 |
| 5738702 | Apparatus for holding a hollow cylinder of silicon dioxide soot A hollow cylinder is held in a vertical orientation and sent continuously through a heating zone for sintering. In a first phase of the sintering operation, the hollow cylinder stands on a support while the upper end (12) of the cylinder is being sintered... | 04/14/1998 |
