Granted Patent
Utility
US 5,684,121 · App. 08/349,774
N-vinyl lactam polymer containing tablets of low friability and high rate of dissolution
Inventor:
Kolazi S. Narayanan
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Dec 6, 1994
Inventor
Kolazi S. Narayanan
Assignee (at issue)
ISP INVESTMENTS LLC
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.