Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carbohydrate or derivative as a reactant
Reexamination Certificate
2007-11-29
2010-06-29
Eashoo, Mark (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carbohydrate or derivative as a reactant
Reexamination Certificate
active
07745558
ABSTRACT:
Provided are entrapped β-cyclodextrin polymers and a method of preparing the same. Particularly, entrapped β-cyclodextrin polymers are prepared by adding epichlorohydrin to β-cyclodextrin to prepare a polymer in a gel state, entrapping the polymer by entrapment of metal ions on the surface of the polymer and pulverizing the entrapped polymer to prepare powders. According to the entrapped β-cyclodextrin polymers, steroid hormones contained in a biological sample can be simply extracted without using an additional device required in conventional solid-phase extraction.
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Choi Man Ho
Chung Bong Chul
Kim Dong Hyun
Moon Ju-Yeon
Eashoo Mark
Frommer & Lawrence & Haug LLP
Heincer Liam J
Korea Institute of Science and Technology
Santucci Ronald R.
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