| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075709000 | Covering the surface of molten metal | 8 |
| 20090064821 | Vapor-Reinforced Expanding Volume of Gas to Minimize the Contamination of Products Treated in a Melting Furnace - Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface. The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface. | 03-12-2009 |
| 20090255375 | Method for the Production of a Foamed Slag in a Metal Bath - The invention relates to a method for producing a foamed slag ( | 10-15-2009 |
| 20090260484 | Molten metal treatment, method for treating molten metal, and apparatus and method for feeding cover gas to molten metal - A molten metal treatment consisting of a liquid mixture in which fluorinated ketone is dissolved in liquid carbon dioxide at 0.01 to 10 wt % is put in a container, and the molten metal treatment is vaporized, and is fed as a cover gas to be contacted with the surface of a molten metal. | 10-22-2009 |
| 20090288520 | Vapor-Reinforced Expanding Volume Of Gas To Minimize The Contamination Of Products Treated In A Melting Furnace - Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface. The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface. | 11-26-2009 |
| 20120103137 | VAPOR-REINFORCED EXPANDING VOLUME OF GAS TO MINIMIZE THE CONTAMINATION OF PRODUCTS TREATED IN A MELTING FURNACE - Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface. The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface. | 05-03-2012 |
| 20130025415 | VAPOR-REINFORCED EXPANDING VOLUME OF GAS TO MINIMIZE THE CONTAMINATION OF PRODUCTS TREATED IN A MELTING FURNACE - Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface, The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface. | 01-31-2013 |
| 20130104699 | Apparatus and Method for Metal Surface Inertion by Backfilling | 05-02-2013 |
| 20140047953 | VAPOR-REINFORCED EXPANDING VOLUME OF GAS TO MINIMIZE THE CONTAMINATION OF PRODUCTS TREATED IN A MELTING FURNACE - Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface. The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface. | 02-20-2014 |
