Catalyst – solid sorbent – or support therefor: product or process – Miscellaneous
Reexamination Certificate
2009-09-10
2011-11-01
Johnson, Edward (Department: 1736)
Catalyst, solid sorbent, or support therefor: product or process
Miscellaneous
C502S506000, C502S507000, C423S345000
Reexamination Certificate
active
08048822
ABSTRACT:
A method for producing carbon-silica products from silica-containing plant matter such as rice hulls or straw by leaching with sulfuric acid to remove non-silica minerals and metal while adjusting the mole ratio of fixed carbon to silica in the resultant product. The carbon and silica are intimately mixed on a micron or submicron scale and are characterized by high purity and reactivity, small particle size, high porosity, and contain volatile carbon that can be used as a source of energy for the production of silicon-containing products from the carbon-silica products. High purity silicon-containing products made from the carbon-silica products of the invention are also disclosed.
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Hinman Norman D.
Wyman Charles S.
Johnson Edward
Locke Lord Bissell & Liddell LLP
Si Options, LLC
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