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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8163062 | Method for operating a hearth furnace A method for operating a hearth furnace encompassing a furnace chamber heated by at least one burner, including: a) introducing metal-containing material into the hearth furnace, b) melting the metal-containing material in a first melting phase until a melting bath ... | 04/24/2012 |
| 8152894 | Methods of using tires and scrap rubber in the manufacture and melting of steel and other metals A method of using scrap rubber and other scrap materials, such as tires or parts or pieces of tires, to manufacture or melt steel and other metals in a furnace is disclosed. The scrap rubber may be used as a carbon source for the manufacture of steel and other metal... | 04/10/2012 |
| 8128726 | Method and device for admixture of powder in a liquid A method and a device for admixture of powder in a liquid, whereby the method comprises that the liquid in a supply (14), influenced by underpressure in a crucible (12) to which the liquid is to be transferred, flows through a drain tube (6) out... | 03/06/2012 |
| 8048195 | Use of liquid-crystal displays, and processes for the recycling thereof The present invention relates to the use of liquid-crystal displays (LCDs), and to processes for the recycling thereof. The processes according to the invention are characterised in that the LCDs are employed at least partly as replacement for other raw materials. I... | 11/01/2011 |
| 7785394 | System and method for in-line molten metal processing using salt reactant in a deep box degasser An in-line deep box treatment of molten metal wherein, instead of gaseous Cl2, a solid salt reactant containing a halide salt (e.g., MgCl2) as one of its components may be injected into the molten metal along with an inert gas (typically argon)... | 08/31/2010 |
| 7678176 | Method and apparatus for charging hot direct reduced iron from hot transport vessels into a melter or finisher The present invention provides a method and apparatus for charging hot direct reduced iron (HDRI) from hot transport vessels (HTVs) into a melter or finisher. In general, the apparatus includes a charging stand including a plurality of bays for receiving and support... | 03/16/2010 |
| 7641711 | Metal vapour condensation and liquid metal withdrawal Liquid metal is continuously recovered by condensing metal vapour in a sealed system, more or less at atmospheric pressure, and collecting liquid metal in a crucible. The contents of the crucible are agitated and the temperature is controlled to prevent the liquid m... | 01/05/2010 |
| 7604680 | Producing nickel-base, cobalt-base, iron-base, iron-nickel-base, or iron-nickel-cobalt-base alloy articles by reduction of nonmetallic precursor compounds and melting A metallic article is produced by furnishing one or more nonmetallic precursor compound comprising the metallic base nickel, cobalt, iron, iron-nickel, or iron-nickel-cobalt, and at least one alloying element. The nonmetallic precursor compound(s) are chemically red... | 10/20/2009 |
| 7527669 | Displacement method and apparatus for reducing passivated metal powders and metal oxides A method of reducing target metal oxides and passivated metals to their metallic state. A reduction reaction is used, often combined with a flux agent to enhance separation of the reaction products. Thermal energy in the form of conventional furnace, infrared, or mi... | 05/05/2009 |
| 7452400 | Method and apparatus for melting metal An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative to fire into the melting chamber, and regenerative burners that also... | 11/18/2008 |
| 7425230 | Method and device for producing pig iron and/or pig iron intermediate products Apparatus and process for producing metal products, in which a metal-containing charge material is melted in a melting unit, and a working gas, in particular an at least partially reducing working gas, is additionally produced in the melting unit. The working gas pr... | 09/16/2008 |
| 7419530 | Method for fractional crystallisation of a molten metal The invention relates to a method for fractional crystallization of an at most partially solidified molten metal. According to the invention a layer of at most partially solidified molten metal to be crystallized is cooled by a layer of cooling liquid, which is pres... | 09/02/2008 |
| 7377955 | Method and apparatus for treatment of metallurgical slag and the like A substantially dry and dust free method of recovering ladle slag is allowing hot ladle slag to cool to powder form in a controlled environment and collecting the powder in a receiver therefor. A vessel having a chamber containing in an upper portion a screen throug... | 05/27/2008 |
| 7364691 | Metallurgical vessel A metallurgical vessel having a cylindrical upper end section and a top section fitted to the upper end of another section to form a top closure of the vessel about a central opening through which to extend a gas injection lance for injecting gas into the vessel. To... | 04/29/2008 |
| 7343666 | Methods of making magnetic write heads with use of linewidth shrinkage techniques In one illustrative example, a method for use in making a magnetic write head includes the steps of forming a first pole piece layer of a first pole piece; forming a patterned resist over the first pole piece layer; electroplating a pedestal over the first pole piec... | 03/18/2008 |
| 7297180 | Method for operating a vacuum vessel with a coherent jet A method for operating a vacuum vessel with a coherent jet wherein vacuum conditions are established within the vessel and an anchored or attached flame envelope resulting from subsonic velocity fuel and oxidant is provided around at least one supersonic gas stream.... | 11/20/2007 |
| 7294278 | Method for oxygenating wastewater A method and apparatus creates gas-enriched fluid that is used to treat wastewater. In one embodiment, the wastewater is withdrawn from a supply of wastewater to be treated, and the wastewater is delivered in an atomized manner to a vessel pressurized with gas to fo... | 11/13/2007 |
| 7281305 | Method of attaching a capacitor to a feedthrough assembly of a medical device A method for attaching a capacitor to the feedthrough assembly of a medical device having a terminal pin comprises threading a first washer over the terminal pin, and placing a body of epoxy in contact with the first washer. The capacitor is positioned over the term... | 10/16/2007 |
| 7258831 | Injector-burner for metal melting furnaces The following invention relates to an injector-burner for applications in the metalwork field, in particular for use in electric arc furnace melting processes having a frontal head with two series of holes arranged in two concentric crowns, the inner crown of holes ... | 08/21/2007 |
| 7238222 | Thermal synthesis production of steel A process for producing liquid steel is disclosed. Carbon monoxide and oxygen may be combusted in a high temperature reactor. Iron and iron oxide materials, along with scrap steel if desired, may be placed in the high temperature reactor. Carbon dioxide produced in ... | 07/03/2007 |
| 7217378 | Simple and efficient process for the preparation of pencil lead from spent pot-liners The present invention relates to a simple and efficient process for the preparation of pencil lead from the spent or waste pot liners of aluminum industries, said process comprising steps of crushing the liners into small sizes, adding chromic acid to the crushed li... | 05/15/2007 |
| 7211038 | Methods for melting of materials to be treated A process for melting material to be treated includes placing material to be treated in a container that may include an insulating lining, heating the material to be treated and melting the material to be treated, preferably allowing the melted material to cool to f... | 05/01/2007 |
| 7198658 | Method for producing feed material for molten metal production and method for producing molten metal The prevent invention provides a method for producing a feed material for molten metal production and a method for producing a molten metal capable of sufficiently carbonizing biomass and effectively using carbonized biomass as a reducing agent. In the method for pr... | 04/03/2007 |
| 7192552 | Facility for reducing metal oxide, method of operating the same, and shaped article of raw material for reducing furnace The present invention provides a reducing furnace of the rotary hearth-type and a method for reducing a metal oxide simplified in the process from dehydration to molding, according to which a moisture-rich powdery raw material is reduced at low cost. The present inv... | 03/20/2007 |
| 7175691 | Method of producing stainless steel by re-using waste material of stainless steel producing process A method of producing stainless steel includes the steps of melting a raw material in an electric furnace to form molten steel, and then refining the molten steel by a refining furnace to produce stainless steel in a stainless steel producing process. In the method,... | 02/13/2007 |
| 7172640 | Method and device for melting down metal-containing materials In a method and a device for melting down metal-containing material, preferably fine-particulate metal-containing material, such as sponge iron, in a metallurgical melting furnace (1), wherein, in an interior space (11) of the melting furnace (1... | 02/06/2007 |
| 7172727 | Apparatus for blood oxygenation An apparatus and method for blood oxygenation are provided. The apparatus includes a chamber having a first inlet to receive a fluid, e.g., physiologic saline; a second inlet to receive a gas, e.g., oxygen, from a gas supply; and an outlet coupled to a capillary ass... | 02/06/2007 |
| 7144441 | Process for producing materials reinforced with nanoparticles and articles formed thereby A method for forming a dispersion-strengthened material containing nanoparticles that are uniformly dispersed in a matrix phase. The method includes adding nanoparticles and a molten material to a container to form a pool within the container and rotating the contai... | 12/05/2006 |
| 7048774 | Recovery of metal values from cermet Cermet material obtained from unused inert anodes, used inert anodes and cermet used in the production of inert anodes is beneficiated into a nonferrous metal concentrate composition from which metal values contained in the composition may be readily recovered by us... | 05/23/2006 |
| 7008535 | Apparatus for oxygenating wastewater A method and apparatus creates gas-enriched fluid that is used to treat wastewater. In one embodiment, the wastewater is withdrawn from a supply of wastewater to be treated, and the wastewater is delivered in an atomized manner to a vessel pressurized with gas to fo... | 03/07/2006 |
| 6974435 | Method for enriching a bodily fluid with a gas A system utilizes an oxygenation device to generate a gas-enriched physiologic fluid and to combine it with a bodily fluid to create a gas-enriched bodily fluid. The oxygenation device may take the form of a disposable cartridge, which is placed within an enclosure.... | 12/13/2005 |
| 6966936 | Processing system, evacuating system for processing system, low-pressure CVD system, and evacuating system and trapping device for low-pressure CVD system An object of the present invention is to ensure the stable operation of a vacuum pump for discharging an unused source gas and reaction byproduct gases from a low-pressure processing chamber, to recover the reaction byproducts efficiently for the effective utilizati... | 11/22/2005 |
| 6960239 | Process and apparatus for adding particulate solid material to molten metal An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas within the molten metal and ... | 11/01/2005 |
| 6955140 | Method and apparatus for increasing the capacity of a waste heat boiler in a metallurgic smelting furnace The invention relates to a method for increasing the capacity of a waste-heat boiler (1) processing gases obtained from a metallurgic smelting furnace, such as a flash smelting furnace, and for reducing dust accretions, where liquid is added into the waste-he... | 10/18/2005 |
| 6953337 | Transfer of hot feed materials from a preprocessing plant to an electric smelting or melting furnace Apparatus for transferring hot material between a preprocessing plant and an electric furnace has an enclosed housing extending between the plant and the furnace and within which a controlled atmosphere is maintained, at least one bin having at least one compartment... | 10/11/2005 |
| 6948650 | Dross removal and solder reclamation improvements When dross is removed from a molten-solder reservoir, a substantial amount of molten solder is often removed with the dross. This molten solder can be separated from the dross and returned to reservoir via a conduit for reuse. Additionally, a skimmer for removing th... | 09/27/2005 |
| 6939465 | Fluid filter system for snow making apparatus A fluid filtering system for filtering dirt and other debris from fluids being conveyed in a pipeline for snow making apparatus and other devices. An upright pipe segment is connected to a horizontal pipe segment through a pipe elbow or angle for conveying fluid suc... | 09/06/2005 |
| 6939388 | Method for making materials having artificially dispersed nano-size phases and articles made therewith A method for forming a nanocomposite material and articles made with the nanocomposite material are presented. The method comprises providing a molten material; providing a nano-sized material, the nano-sized material being substantially inert with respect to the mo... | 09/06/2005 |
| 6936221 | Method of forming gas-enriched fluid A method for forming a gas-enriched fluid is provided. The method includes a step of providing a mixing chamber having a first inlet, a second inlet, and an outlet. A first fluid is delivered into the mixing chamber via the first inlet and flows vertically. A second... | 08/30/2005 |
| 6932854 | Method for producing low carbon steel A method for producing low carbon steel wherein molten steel is decarburized in a three stage refining procedure comprising a first stage wherein oxygen is provided for decarburization enveloped in a gas shroud, a second stage wherein oxygen is provided for decarbur... | 08/23/2005 |
