Granted Patent
Utility
US 5,582,838 · App. 08/363,451
Controlled release drug suspension delivery device
Inventors:
Gerald S. Rork, James D. Pipkin
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: Dec 22, 1994
Inventors
Gerald S. Rork
James D. Pipkin
Assignee (at issue)
MERCK & CO., 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.