Granted Patent
Utility
US 6,770,297 · App. 09/580,232
Controlled release delivery system of solid dosage form
Inventor:
Jiajiu Shaw
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: May 26, 2000
Inventor
Jiajiu Shaw
Assignee (at issue)
Unitech Pharmaceuticals, 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.