Granted Patent
Utility
US 5,693,338 · App. 08/315,200
Diketopiperazine-based delivery systems
Inventor:
Sam J. Milstein
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Sep 29, 1994
Inventor
Sam J. Milstein
Assignee (at issue)
Emisphere Technologies, Inc.
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.