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| Number | Title | Issue Date |
| 7946132 | Method for manufacturing optical fiber preform and optical fiber preform apparatus A method for manufacturing an optical fiber preform and an optical fiber preform apparatus are provided which can reduce hydroxyl groups in an optical fiber preform to a sufficient level without requiring any special equipment or operating conditions. When an optica... | 05/24/2011 |
| 7669439 | Gas injection for glass melting furnace to reduce refractory degradation A glass melting furnace has a gas inlet positioned proximate to a charging section oxy-fuel combustion region to introduce gas into the region and to at least partially displace gas having a partial pressure of alkali vapor from the region, and optionally a gas outl... | 03/02/2010 |
| 7628039 | System and method for controlling the environmental around one or more vessels in a glass manufacturing system A system and method are described herein that control the environment (e.g., oxygen, hydrogen, humidity, temperature, gas flow rate, pressure) around one or more vessels in a glass manufacturing system. In the preferred embodiment, the system includes a closed-loop ... | 12/08/2009 |
| 7624595 | Method and device for melting and refining materials capable of being vitrified A process for melting and refining vitrifiable materials, such that all or part of the thermal energy necessary for melting the said vitrifiable materials is supplied by the combustion of fossil fuel(s) with at least one oxidizer gas, the fuel(s)/gas or the gaseous ... | 12/01/2009 |
| 7325418 | Press forming system for glass The present invention is directed to reduce the total footprint of a press forming system for glass having a plurality of press units, and also to increase an actual availability of each press unit. A plurality of press units are arranged in two parallel rows and a ... | 02/05/2008 |
| 7256375 | Susceptor plate for high temperature heat treatment Susceptor plates are provided for high temperature (e.g., greater than 1000° C.) batch processing of silicon wafers. The susceptor plates are designed to accommodate one wafer each, and a plurality of loaded susceptor plates are vertically spaced apart in a suscept... | 08/14/2007 |
| 7246894 | Ink cartridges An ink cartridge includes an ink chamber, and a translucent portion configured to be in fluid communication with the ink chamber. The translucent portion has an inner space formed therein, and the translucent portion includes a first wall, a second wall opposite the... | 07/24/2007 |
| 7231788 | Method and device for refining a glass melt using negative pressure The apparatus for reduced-pressure refining of a glass melt includes a refining bank formed so that a reduced pressure is generated by a glass flow in it. The refining bank has a component, which is made from a refractory metal or refractory alloy acting as glass-co... | 06/19/2007 |
| 7171827 | System and method for automated casting of infrared glass optical components In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature abo... | 02/06/2007 |
| 7150165 | Molten glass fining apparatus The basic shape of the molten glass fining apparatus of the present invention is preferably either an elliptical or a somewhat rectangular shape such that the flow is more uniform and the bubbles have less distance to rise to the surface. A novel baffle design is al... | 12/19/2006 |
| 7147454 | Optical lens molding apparatus and precision molding apparatus An optical lens molding apparatus includes a cylindrical mold, a first mold core, a second mold core and a correctional ring. The first and the second mold core have a columnar shape and are disposed inside the cylindrical mold to form a cavity. Furthermore, the fir... | 12/12/2006 |
| 7134300 | Method for controlling foam production in reduced pressure fining A method for controlling the foam produced when a molten material encounters reduced pressure in a vacuum chamber includes passing the molten material through an aging zone in the vacuum chamber in which the molten material is allowed to drain from between the bubbl... | 11/14/2006 |
| 7107794 | Suction feeder The suction feeder for glass processing includes a housing containing a material; a heatable noble metal or noble metal alloy feed line embedded in the housing in a thermally insulated fashion; a connection element at one end of the feed line for connection with a m... | 09/19/2006 |
| 7007514 | Vacuum degassing apparatus for molten glass A vacuum degassing apparatus for molten glass includes a vacuum housing which is evacuated to be depressurized therein; a vacuum degassing vessel which is provided in the vacuum housing to vacuum-degas molten glass as the molten glass flows therein; an uprising pipe... | 03/07/2006 |
| 7007515 | Noble metal duct for conducting a glass melt and method for conducting a glass melt The double-walled noble metal duct (1) for conducting a glass melt has an outer noble metal pipe (1b) and an inner noble metal pipe (1a) extending within the outer pipe, so that an inner space (21) is formed within the inner... | 03/07/2006 |
| 6978984 | Raw material providing device for chemical vapor deposition process Disclosed is a raw material-providing device for a chemical-vapor deposition process and includes: a bubbler for vaporizing liquid raw material and providing the vaporized raw material to a deposition unit; and a raw material tank for providing liquid raw material t... | 12/27/2005 |
| 6948338 | Vacuum degassing apparatus for molten glass A vacuum degassing apparatus for molten glass includes a vacuum housing; a vacuum degassing vessel provided in the vacuum housing; an uprising pipe which connects to the vacuum degassing vessel; and a downfalling pipe which connects to the vacuum degassing vessel. T... | 09/27/2005 |
| 6848272 | Method and apparatus for delivering a cased glass stream Apparatus for forming a cased glass stream having an inner core glass surrounded by an outer casing glass that includes a spout for delivering core glass from a first source through a first orifice. A second orifice is vertically spaced beneath and aligned with the ... | 02/01/2005 |
| 6813904 | Differential pressure process for fabricating a flat-panel display faceplate with integral spacer support structures A process for fabricating a faceplate for a flat-panel display such as a field emission cathode type display is disclosed, the faceplate having integral spacer support structures. Also disclosed is a product made by the aforesaid process. ... | 11/09/2004 |
| 6748766 | Porous preform vitrification apparatus A porous preform vitrification apparatus of the present invention, provided with a means for forcibly feeding nitrogen etc. from a furnace core tube to a discharge gas pipe so as to balance a pressure between a furnace core tube accommodating a porous preform and a ... | 06/15/2004 |
| 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 |
| 6631627 | Differential pressure process for fabricating a flat-panel display face plate with integral spacer support structures and a face plate produced by such process A process for fabricating a face plate for a flat-panel display such as a field emission cathode type display is disclosed, the face plate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.... | 10/14/2003 |
| 6564586 | Differential pressure process for fabricating a flat-panel display face plate with integral spacer support structures A process for fabricating a face plate for a flat panel display such as a field emission cathode type display is disclosed, the face plate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.... | 05/20/2003 |
| 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 |
| 6542680 | Optical fiber preform An optical fiber preform is a material used for fabricating optical fibers. The optical fiber preform has a target rod which will be the core for optical fibers and a glass layer formed around the outside thereof. A mass W (kg) of the optical fiber prefor... | 04/01/2003 |
| 6513347 | Heat conditioning process For heat conditioning flat panel glass substrates the substrates are directly exposed in vacuum to the radiation of lamps, the lamps being selected so that their spectral radiation characteristics (b, c) fit with the absorption characteristics (a) of the ... | 02/04/2003 |
| 6508084 | Method for producing optical quartz glass for excimer lasers and vertical-type heating furnace A method for producing an optical quartz glass for use in excimer lasers, comprising a step of forming a porous silica preform by depositing silica in a soot-like form formed by flame hydrolysis of a high-purity volatile silicon compound, followed by a st... | 01/21/2003 |
| 6460376 | Method and device for melting and refining materials capable of being vitrified A process for melting and refining vitrifiable materials. In this method all or part of the thermal energy necessary for melting the vitrifiable materials is supplied by the combustion of fossil fuel with at least one oxidizer gas, the fuel, gas or the ga... | 10/08/2002 |
| 6405564 | Vacuum degassing apparatus for molten glass A vacuum degassing apparatus for molten glass according to the present invention comprises a vacuum housing where a vacuum is created; a vacuum degassing vessel housed in the vacuum housing to degas the molten glass; an introduction device communicated to... | 06/18/2002 |
| 6393869 | Differential pressure process for fabricating a flat-panel display face plate with integral spacer support structures A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support st... | 05/28/2002 |
| 6349569 | Stain-resistant glass making method The present invention provides a method for making a stain-resistant float glass and an apparatus for carrying out such a method. In keeping with this method, SO3 is applied to the upper surface of float glass in an amount efficacious to materi... | 02/26/2002 |
| 6334336 | Vacuum degassing apparatus for molten glass and method for building it A vacuum degassing apparatus comprises a path made of dense refractory bricks, the path including an inner surface brick layer, the refractory bricks in the inner surface brick layer having a flatness of 0.5 mm on contacting surfaces with one anther, and ... | 01/01/2002 |
| 6321572 | Vacuum degassing apparatus for molten glass A vacuum degassing apparatus includes a lifter to absorb deformation in a vertical direction due to thermal expansion of the vacuum degassing, a slider to absorb thermal expansion of the vacuum degassing vessel in a longitudinal direction thereof, or a th... | 11/27/2001 |
| 6286337 | Tubing system for reduced pressure finer A tubing system for conveying a molten material through a vacuum housing includes a tubing having a plurality of convolutions which compress as the tubing expands. A plurality of projections disposed along a length of the tubing carries the electrical cur... | 09/11/2001 |
| 6279348 | Differential pressure process for fabricating a flat-panel display face plate with integral spacer support structures A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support st... | 08/28/2001 |
| 6237368 | Process for the regulating or controlling the NOx content of exhaust gases given off during the operating of glass melting furnaces with several burners run alternately A method for regulating or controlling the content of NOx in the exhaust gases of a glass-melting furnace having several burners operated in alternation, wherein both the beginning and the end of a combustion break (FP+, FP- | 05/29/2001 |
| 6233974 | Oxygen-gaseous forehearth burner for air-fuel and oxy-fuel forehearth burner block geometries An oxy-gaseous fuel burner for a forehearth system having an oxygen conduit, a fuel conduit disposed concentrically within the oxygen conduit and forming an annulus between the fuel conduit and the oxygen conduit, a precombustor conduit disposed at the ox... | 05/22/2001 |
| 6158246 | Barrier film for hydrogen coloration in glass Method of patterning or forming color gradients and/or designs on a glass surface are disclosed. Patterns are formed by depositing a film of metal on at least one surface of the glass; forming a layer of photoresist over the metal; exposing the article to... | 12/12/2000 |
| 6119484 | Vacuum degassing apparatus for molten glass A vacuum degassing apparatus for molten glass includes a vacuum housing where a vacuum is created; a vacuum degassing vessel housed in the vacuum housing to degas the molten glass; an introduction device communicated to the vacuum degassing vessel so as t... | 09/19/2000 |
| 6101846 | Differential pressure process for fabricating a flat-panel display face plate with integral spacer support structures A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support st... | 08/15/2000 |
