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| Number | Title | Issue Date |
| 7297909 | Method and apparatus for homogenisation of melt Microwave radiation of frequency 0.1 to 20 GHz, is applied to the melt of viscosity in the range 104 to 101 Pa·s. The outside surface of heated space, where an outlet of the waveguide of microwave radiation is located, can be cooled. The micro... | 11/20/2007 |
| 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 |
| 7120185 | Method and apparatus for waste 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... | 10/10/2006 |
| 7024888 | Method for changing glass compositions in melting installations, and corresponding melting installation The invention relates to a method for changing glass compositions in continuously operated melting installations which has a significantly shortened melt changeover time and therefore lower costs and in which the glass quality is not adversely affected. ... | 04/11/2006 |
| 7027481 | Method and electric furnace for melting vitreous materials A method and apparatus for melting vitrifiable materials employs a melting tank for containing a molten bath with an upper surface. The tank has a floor and side walls and channels for discharging molten materials. A crown is situated above the floor and vitrifiable... | 04/11/2006 |
| 7003985 | Method and apparatus for removing polymeric coatings from optical fiber in a non-oxidizing environment In accordance with the invention, the polymeric coating is removed from a coated optical fiber by disposing the fiber within a non-oxidizing environment and applying sufficient heat to volatilize at least a portion of the polymeric coating. The result is that the co... | 02/28/2006 |
| 6889527 | Skull pot for melting or refining inorganic substances, especially glasses and glass ceramics The invention relates to a skull pot (1) for melting, crystallizing or refining inorganic substances. Said pot comprises a pot wall (1.1), a pot bottom (1.2), an induction coil (2) which surrounds the pot wall (1.1) and by means of... | 05/10/2005 |
| 6880365 | Use of sintered refractory material based on tin oxide for producing glass furnace throats The use of blocks (1, 2, 3, 4) based on sintered tin oxide for producing the throat of a glass furnace. ... | 04/19/2005 |
| 6853673 | Process and device for producing a quartz glass crucible by ring-like arc, and its quartz glass crucible The present invention provides a process and a device for producing a quartz glass crucible, which generates a stable ring-like arc and is suitable for the production of an excellent crucible having the large open diameter. In a production process and a devic... | 02/08/2005 |
| 6848275 | Method for melting or refining glasses or glass ceramics This invention relates to a device for melting or refining glass or glass ceramics. According to the invention, such a device is provided with the following characteristics: a channel which is arranged in an essentially horizontal manner and which is provided with a... | 02/01/2005 |
| 6810068 | Electric glass melting furnace, with pivoting wall elements An electric glass-melting furnace including a floor made of refractory materials, four lateral walls, an upper roof, a glass composition feeder, and an output channel for the melted glass. The furnace includes a set of elements pivoting about horizontal axes and pla... | 10/26/2004 |
| 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 |
| 6795484 | Method and system for reducing a foam in a glass melting furnace Provided is a method for reducing or removing a foam present in a glass melting furnace, including providing an ultrasonic energy emitted from at least one ultrasonic energy source to a foam present above the surface of a molten material in a glass melting furnace. ... | 09/21/2004 |
| 6757317 | Device for melting or purifying of inorganic sustances A device for the melting or purifying of inorganic substances, in particular of glass, which comprises a number of metal tubes which may be attached to a cooling medium and which are arranged next to each other, in such a way that together they form a container, a h... | 06/29/2004 |
| 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 |
| 6492628 | Heater supporting structure and heating furnace for bending a glass sheet A heater supporting structure includes heaters comprising plate-shaped electrical resistance heating elements and power applying portions for energizing the electrical resistance heating elements, mounts for mounting the electrical resistance heating elem... | 12/10/2002 |
| 6414982 | Device for melting and/or refining inorganic compounds A high-frequency device for melting and refining inorganic compounds having a high-frequency oscillation system and a crucible. The high-frequency system includes an induction coil looping around the crucible and at least two oscillator circuits connectab... | 07/02/2002 |
| 6339610 | Glass melting tank and process for melting glass A glass melting tank with at least one pair of heating electrodes projecting into the glass melt and a process for melting glass are described. The glass melting tank has, at least in the area of the melt, a narrowed cross section area and the glass melti... | 01/15/2002 |
| 6144688 | Heat furnace having complimentary electric heating A furnace having a combustion chamber, a fuel inlet for the combustion chamber, an electric heater operatively coupled with the combustion chamber, an electric generator coupled to the electric heater, and an internal combustion engine for driving the ele... | 11/07/2000 |
| 6014403 | Induction furnaces for the synthesis of glasses In an induction furnace for the synthesis of glasses, in particular fluorozirconate glasses for optical fibres for telecommunications, the support device (6') for the crucible (3) is associated with a pair of sleeves (7, 9) between which an annular elemen... | 01/11/2000 |
| 5881090 | Quartz used in semiconductor manufacturing device, apparatus for manufacturing the quartz, and method for manufacturing the same An inner chamber is arranged inside an outer chamber and stores quartz crystal powder. A space is defined between the inner chamber and the outer chamber, and an oxygen gas is introduced into that space. The quartz crystal powder is supplied from the inne... | 03/09/1999 |
| 5862169 | Float glass production A float glass production facility comprising a furnace including a melter, a refiner and a working end, the working end having two or more exits, each of which supplies a separate canal and float glass forming chamber, the working end being operable so th... | 01/19/1999 |
| 5743933 | Apparatus and method for defibrating optically dense glass melts An apparatus for defibrating optically dense glass melts, such as a glass melt from basalt by the jet process, is proposed which is equipped with a feeding mechanism (1) for the melt and defibrating aggregates (2), the feeding mechanism (1) having a feed ... | 04/28/1998 |
| 5659564 | Method and apparatus for maintaining a furnace stack The bottoms of exhaust stacks and systems on glass melting furnaces usually collect slag that is produced by volatiles in the exhaust gases condensing out and forming a glassy substance on the cooler walls of the stacks, etc. which then runs down the wall... | 08/19/1997 |
| 5636240 | Air pollution control process and apparatus for glass furnace An air pollution control process and apparatus for glass furnaces for use in the furnace's waste gas outlet including passing the waste gases through a spray type neutralization tower to remove sulphates in the waste gases by spraying an absorbent (NaOH) ... | 06/03/1997 |
| 5628808 | Glass melter off-gas system Apparatus and method for melting glass in a glass melter in such a way as to reduce deposition of particulates in the off-gas duct. Deposit accumulation is reduced by achieving an off-gas velocity above approximately 15 meters/second and an off-gas temper... | 05/13/1997 |
| 5613994 | Electric furnace for melting glass The device for melting glass includes a compartment 1 for melting with a discharge throat 11 defined on top by a mobile carrier 16 having an upper part 18 extending upward above the level of glass and a lower part 17 intended to be totally immersed in the... | 03/25/1997 |
| 5588978 | Process and apparatus for coloring glass A method and apparatus for the production of colored glass includes the steps of diverting a stream of clear molten glass from at least one glass melting furnace through one or more transport channels to a color treatment chamber. Recycled cullet and colo... | 12/31/1996 |
| 5550857 | Method and apparatus for waste 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 |
| 5490162 | Process and device for the continuous treatment of silicon The invention relates to a process for the continuous treatment of silicon in which a slag in a pivotable low-shaft furnace (1) with a discharge pipe (4) reaching the bottom of the furnace tank is taken to a temperature of 1450° to 1800° C. and this sla... | 02/06/1996 |
| 5332702 | Low sodium zircon refractory and fused silica process A fired, porous, zircon refractory body consisting essentially of zircon and having a sodium ion content, as an impurity, of less than 30 ppm. A furnace for making fused silica constructed with a crown and cup of such zircon refractory, and a method of ma... | 07/26/1994 |
| 5327452 | Forehearth A forehearth for a glass furnace comprises a trough and roof over the trough, the roof having two longitudinal ridges extending downwardly towards the surface of the glass to define three longitudinal chambers. The central chamber forms a conduit for the ... | 07/05/1994 |
| 5319669 | Hazardous waste melter An apparatus for processing various hazardous waste materials by melting in a vessel for subsequent solidification is disclosed which includes a seal for the cover thereof. Melter includes a high-speed mixing impeller powered by a drive shaft which extend... | 06/07/1994 |
| 5312471 | Method and apparatus for the manufacture of large optical grade SiO2 glass preforms The disclosed process involves the feeding of particulate SiO2 into a rotating cylindrical furnace in which a gas plasma arc has been established, for melting the feed at a temperature of at least 2400° C. The feed rate is regulated so that th... | 05/17/1994 |
| 5271032 | Lid heater for glass melter A glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes begin... | 12/14/1993 |
| 5265118 | Silicon carbide whisker production apparatus A silicon carbide whisker production apparatus manufactured by placing a plurality of lidded reaction vessels in the longitudinal direction of an Acheson furnace at intervals, packing graphite grains in the gaps between the adjacent reaction vessels and a... | 11/23/1993 |
| 5241558 | Vertical glass melting furnace A vertical glass melting furnace of the type having an inlet for raw materials at the top thereof, an outlet for molten glass at the bottom thereof, and a tabular electric resistance heating element for melting which is immersed at some level in molten gl... | 08/31/1993 |
| 5228052 | Plasma ashing apparatus A plasma ashing apparatus has a vacuum treatment chamber for receiving therein a substrate coated with a resist film, a reactive gas introduction pipe equipped with a plasma applicator, a vacuum exhaust pipe, a heating means for heating the substrate, and... | 07/13/1993 |
| 5173919 | Manipulation of the exit gas flow in a melting furnace In a melting furnace (1), toxic, volatile chemical compounds from introduced filter dust from industrial incineration units are vaporized at about 1300° C. and forced to leave the reaction space. The non-vaporizing residue forms a glassy melt which is di... | 12/22/1992 |
| 5151918 | Electrode blocks and block assemblies Electrode blocks and multiple-piece assemblies are provided for electric, glass-melting furnaces to reduce the occurrence and extent of cracking which occurs in monolithic electrode blocks from thermal stresses induced by a high temperature gradient betwe... | 09/29/1992 |
