Granted Patent
Utility
US 5,204,121 · App. 07/472,681
Medicaments having controlled release of the active compound
Inventors:
Manfred Bucheler, Andreas Ohm, Roland Rupp, Josef Schmoll, Axel Wollenschlager
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jan 30, 1990
Inventors
Manfred Bucheler
Andreas Ohm
Roland Rupp
Josef Schmoll
Axel Wollenschlager
Assignee (at issue)
Bayer Aktiengesellschaft
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.