| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075407000 | Filtering vaporous or liquid metal | 10 |
| 20080216605 | Method of Depositing Copper in Lead-Free Solder, Method of Granulating (Cux)6Sn5 Compound and Method of Separating the Same, and Method of Recovering Tin - The purpose of the present invention is to separate excess coppers leached out in a lead-free solder bath and recover tin with high efficiency. An element X for forming a (CuX) | 09-11-2008 |
| 20090071293 | Filter Device for Molten Metal Filtration and Method for Producing Such Filters - The present invention relates to a ceramic filter device for molten metal filtration comprising a major ceramic phase and a minor carbon phase bonded by phosphate bond, a method for producing such filter devices, and the use of such filter devices for the filtration of molten steel. | 03-19-2009 |
| 20090320647 | PRESSURE CONTROL IN DIRECT SMELTING PROCESS - A direct smelting process for producing molten metal from a metalliferous feed material in a direct smelting vessel is disclosed. The process includes using a stream of off-gas from the vessel as a fuel gas in (i) stoves for generating a hot blast of air or oxygen-enriched air for the process and (ii) a waste heat recovery apparatus for generating steam for the process. The process also includes controlling pressure in the vessel by controlling pressure in the off-gas stream while the process is producing molten metal. | 12-31-2009 |
| 20110283836 | Coatings for Refractory Substrates - A temperature-specific compound applied to refractory substrates having molten metal-contacting surfaces creates a chemically active and viscous surface that dramatically increases the ability of the treated substrate to remove slag, dross and other inclusions from a base metal alloy as it passes through or contacts the substrate. The refractory substrates include molten metal filters used by foundries and metal casters such as reticulated ceramic foam, cellular/honeycomb, silica mesh, and others that rely on their physical or sieving ability to remove particulate impurities from the base alloy being cast. The chemically active surfaces significantly increase filtration efficiency through a treatment process tailored to the specific chemistry of the alloy being filtered, such as ferrous metals that include iron, steel and more. Other refractory substrates such as aluminum oxide, magnesium oxide, zirconium oxide, aluminum silicate, silicon carbide (as common with reticulated ceramic foam filters) and the like may also include the coatings. | 11-24-2011 |
| 20160186290 | METALLURGICAL SLAG COATINGS FOR REFRACTORY SUBSTRATES - Coatings comprising metallurgical slag are applied to refractory substrates having molten metal-contacting surfaces to create a chemically active and viscous surface that dramatically increases the ability of the treated substrate to remove slag, dross and other inclusions from a base metal alloy as it passes through or contacts the substrate. The refractory substrates include molten metal filters used by foundries and metal casters such as reticulated ceramic foam, cellular/honeycomb, silica mesh, and others that rely on their physical or sieving ability to remove particulate impurities from the base alloy being cast. The chemically active surfaces significantly increase filtration efficiency through a treatment process tailored to the specific chemistry of the alloy being filtered, such as ferrous metals that include iron, steel and more. Other refractory substrates such as aluminum oxide, magnesium oxide, zirconium oxide, aluminum silicate, silicon carbide (as common with reticulated ceramic foam filters) and the like may also include the coatings. | 06-30-2016 |
| 075409000 | Magnesium(Mg) | 1 |
| 20140360316 | BN or Y2O3 Coated Ceramic Filters Used in Filtration of Aluminum-Lithium Alloys and Reactive Alloys - A filter which is particularly suitable for filtration of molten metal, and method of making the filter, is described. The filter comprises a ceramic core comprising a primary component selected from the group consisting of alumina and magnesium oxide. A coating is on the ceramic core wherein the coating is selected from the group consisting of BN and Y | 12-11-2014 |
| 075410000 | Noble metal, singly or in combination | 1 |
| 20160138129 | CHELATING POLYMERIC MEMBRANES - The present application offers a solution to the current problems associated with recovery and recycling of precious metals from scrap material, discard articles, and other items comprising one or more precious metals. The solution is premised on a microporous chelating polymeric membrane. Embodiments include, but are not limited to, microporous chelating polymeric membranes, device comprising the membranes, and methods of using and making the same. | 05-19-2016 |
| 075412000 | Aluminum(Al) | 3 |
| 20110011213 | CALCIUM ALUMINATE CLINKER AS A REFRACTORY AGGREGATE WITH AND WITHOUT BARIUM ADDITION AND USE THEREOF - The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula C | 01-20-2011 |
| 20110107875 | METHOD FOR FILTERING MOLTEN ALUMINUM AND MOLTEN ALUMINUM ALLOYS - A method for filtering molten aluminum and aluminum alloys. The method includes providing a reticulated foam wherein oxygen is introduced to an interior of the reticulated foam. Molten aluminum or aluminum alloy is passed through said reticulated foam wherein oxygen is maintained at a partial pressure of at least 2.51×10 | 05-12-2011 |
| 20120144958 | CORROSION RESISTANT GLASS COATING APPLIED TO CERAMIC FOAM USED TO FILTER MOLTEN ALUMINUM - An improved filter is described which is particularly suitable for filtering molten metal. The filter has a porous open celled ceramic foam body with voids separated by struts wherein a portion of the struts are densified with glass. | 06-14-2012 |
