US PATENT SUBCLASS 423 / DIG 14
.~ Ion exchange; chelation or liquid/liquid ion extraction


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

DIG 9  DD  Reaction techniques {8}
DIG 14.~ Ion exchange; chelation or liquid/liquid ion extraction