Mineral oils: processes and products – Refining – Metal contaminant removal
Reexamination Certificate
2006-01-17
2006-01-17
Hruskoci, Peter A. (Department: 1724)
Mineral oils: processes and products
Refining
Metal contaminant removal
C044S309000, C044S454000, C208S301000, C208S302000, C210S665000, C210S690000, C210S721000, C210S760000, C210S912000
Reexamination Certificate
active
06986840
ABSTRACT:
Methods for removing organolead compounds from aqueous and non-aqueous organolead compositions. The methods of the present invention include: providing aqueous or non-aqueous compositions including organolead compounds; ozonating the organolead compositions with ozone, wherein the organolead compounds are oxidized producing insoluble lead oxide polymers; contacting the aqueous or non-aqueous compositions including insoluble lead oxide polymers through activated carbon to remove the insoluble lead oxide polymers; filtering the aqueous or non-aqueous compositions including lead oxide polymers through at least one filtering means to remove the insoluble lead oxide polymers; and recovering the aqueous or non-aqueous compositions substantially free of organolead compounds and/or other unwanted contaminants or impurities.
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Haley Charlene A.
Hruskoci Peter A.
The United States of America as represented by the Secretary of
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