Granted Patent
Utility
US 4,824,677 · App. 06/943,979
Grooved tablet for fractional dosing of sustained release medication
Inventors:
Ashok C. Shah, Nancy Britten, Joseph N. Badalamenti
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Dec 18, 1986
Inventors
Ashok C. Shah
Nancy Britten
Joseph N. Badalamenti
Assignee (at issue)
The Unjohn Company
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.