Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2006-06-23
2010-12-14
Chung, Susannah (Department: 1626)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C424S001810, C540S467000
Reexamination Certificate
active
07851496
ABSTRACT:
Disclosed relates to an ionic liquid type crown ether derivative, expressed by Chemical Formula 1 below, for isolating metal ions, a method for preparing the same and a method for isolating selectively the metal ions using the cycle size of the same. The present invention can provide the ionic liquid type crown ether and isolate metal ions including radioactive isotopes efficiently using the same. Furthermore, the prevent invention provides crown ether valuably used as a recyclable and environment-friendly isolating medium by preparing crown ether of ionic liquid type.wherein m, n, X−and R are identical with those in the description.
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Byun Myung Woo
Gwon Hui Jeong
Jang Seung Ho
Park Sang Hyun
Chung Susannah
Coppins Janet L
Korea Atomic Energy Research Institute
Lucas & Mercanti LLP
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