Granted Patent
Utility
US 6,306,439 · App. 08/854,048
Expandable pharmaceutical forms
Inventors:
Gunther Penners, Klemens Lustig, Jorg Petersen-von Gehr
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: May 9, 1997
Inventors
Gunther Penners
Klemens Lustig
Jorg Petersen-von Gehr
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.