Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-12-27
2005-12-27
McKenzie, Thomas C. (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
C514S263340
Reexamination Certificate
active
06979687
ABSTRACT:
The invention pertains to theophylline (1-methyl, 3-methyl xanthine) and IBMX (1-methyl, 3-isobutyl xanthine) derivatives of formulas I and II:where R1is —CH3or —CH2CH(CH3)2, andR2iswhere R3and R4are independently selected from the group consisting of OCH3, CH3, NO2, F, Cl, Br and I.
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Birch & Stewart Kolasch & Birch, LLP
Chen Ing-Jun
Cho-Jan Liang
McKenzie Thomas C.
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