Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-09-21
2009-10-06
Seaman, D. Margaret (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C203S050000, C203S071000
Reexamination Certificate
active
07598405
ABSTRACT:
The present invention provides a process for distillatively purifying tetrahydrofuran in the presence of a polar solvent.
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Pinkos Rolf
Roesch Markus
Steiniger Michael
Vanden Hautte Dany
Weck Alexander
BASF - Aktiengesellschaft
Chandrakumar Nizal S
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Seaman D. Margaret
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