Liquid purification or separation – Processes – Ion exchange or selective sorption
Reexamination Certificate
2005-02-15
2005-02-15
Ogden, Necholus (Department: 1751)
Liquid purification or separation
Processes
Ion exchange or selective sorption
C526S288000
Reexamination Certificate
active
06855259
ABSTRACT:
The present invention is directed to a process for reducing the passive layer on a metal. The process includes reacting a treatment composition having a non-metallic compound with metal ions in the passive layer of a metal, thereby forming an organometallic complex precipitate, and removing the organometallic complex precipitate. In one embodiment the non-metallic compound is a thiuram. In another embodiment, the treatment composition further includes a non-metallic compound that is a dithiocarbamate.
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Canadus Technologies LLC
Dergosits & Noah LLP
Lee Samuel S.
Ogden Necholus
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