Granted Patent
Utility
US 6,552,011 · App. 09/913,932
(Androst-5-en-17beta -yl)alkyl sulfoxides and sulfones and their use for control of fertility
Inventors:
Dirk Leysen, Jaap Van Der Louw, Anja Wiersma
Patented Case
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Granted: Apr 22, 2003
Filed: Aug 20, 2001
Inventors
Dirk Leysen
Jaap Van Der Louw
Anja Wiersma
Assignee (at issue)
AKZO NOBEL N.V.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.