Granted Patent
Utility
US 5,688,944 · App. 08/473,810
Carbamazepine derivatives
Inventor:
Chengrong Wang
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jun 7, 1995
Inventor
Chengrong Wang
Assignee (at issue)
Dade International, 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.