Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures inventions 05/08

20080105083 - Ultrafine alloy particles, and process for producing the same: The Ultrafine alloy particles of an alloy includes a primary metal and one or more subsidiary metals solid-soluble in said primary metal, a content of the one or more subsidiary metals is in a range of 1 wt % to 25 wt % and the one or more subsidiary metals... Agent: Whitham, Curtis & Christofferson & Cook, P.C.

20080105084 - Method of production of tantalum powder with low impurity level: The production of tantalum powder having a low impurity level is provided by a method in which potassium heptafluotantalate is added to a mixture of alkali metal halides in reactor vessel in which the internal surface and auxiliary input accessories of the reactor are covered with a tantalum coating. In... Agent: Crowell & Moring LLP Intellectual Property Group

20080105088 - Method for thiosulfate leaching of precious metal-containing materials: Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polythionates, inert atmospheres to control polythionate production, and electrolytic solutions which provide... Agent: Sheridan Ross PC