Granted Patent
Utility
US 6,638,535 · App. 09/833,662
Modified release formulations containing a hypnotic agent
Inventors:
Jacobus Lemmens, Dennie J. M. van den Heuvel, Johannes Jan Platteeuw, Frans van Dalen
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Apr 13, 2001
Inventors
Jacobus Lemmens
Dennie J. M. van den Heuvel
Johannes Jan Platteeuw
Frans van Dalen
Assignee (at issue)
Synthon B.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.