Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
2008-05-09
2011-10-18
Wilson, James O (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
Reexamination Certificate
active
08039618
ABSTRACT:
The present invention is directed to a method for producing bicyclic guanidines comprising heating a cyclic urea to a temperature >200° C. to form the bicyclic guanidines.
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Hickenboth Charles R.
Karabin Richard F.
McCollum Gregory J.
Minch Britt A.
Zawacky Steven R.
Hays Steven W.
Jaisle Cecilia M
Meyers Diane R.
PPG Industries Ohio Inc.
Wilson James O
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