Granted Patent
Utility
US 5,278,045 · App. 07/486,484
Method and compositions to screen compounds for enhancement of the cholinergic, dopaminergic and serotonergic function
Inventor:
Sang William Tam
Patented Case
View Patent ↗
Granted: Jan 11, 1994
Filed: Feb 28, 1990
Inventor
Sang William Tam
Assignee (at issue)
The DuPont Merck Pharmaceutical 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.