Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Reexamination Certificate
2007-06-26
2007-06-26
King, Roy (Department: 1742)
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
C423S632000
Reexamination Certificate
active
10479715
ABSTRACT:
This invention relates to a novel porous, sulpha sponge iron compound derived from haematite having the following composition given below: and having trace elements such as Au, Pt and Ag therein, by dissolving said haematite in concentrated hydrochloric acid. The acidic solution is treated with alcoholic ammonia and glacial acetic acid. The sulpha sponge iron compound has Fe2/Fe3cores forming interstatially stabilized clusters. The invention also includes a process for desulphurising natural gas by adsorbing sulphur containing contaminants in the novel sulpha sponge iron compound either at the drilling site or on a bed containing the same.
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International Search Report.
Good Earth Chemicals Private Limited
King Roy
McNelis Kathleen
Rader & Fishman & Grauer, PLLC
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