Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai
Reexamination Certificate
2007-12-25
2007-12-25
Lilling, Herbert J. (Department: 1657)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Carbohydrate doai
C424S715000, C424S729000, C424S732000, C426S425000, C426S427000, C426S429000, C514S396000, C514S399000, C514S400000, C514S401000, C514S403000, C514S404000, C514S456000, C514S460000
Reexamination Certificate
active
11272122
ABSTRACT:
A process is provided for making (−)-epigallocatechin gallate (EGCG) by subjecting a green tea extract to chromatography on a macroporous polar resin, eluting EGCG from the resin with a polar elution solvent, optionally concentrating the eluate, optionally regenerating the resin by desorbing the remaining catechins, and optionally concentrating the desorbed catechins.
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Burdick David Carl
Egger Heinz
Gum Andrew George
Koschinski Ingo
Muelchi Elena
Bryan Cave LLP
DSM IP Assets B.V.
Lilling Herbert J.
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