Granted Patent
Utility
US 5,580,871 · App. 08/401,599
4-Heteroaryl- 1,4-dihydropyridine compounds with calcium agonist and alpha.sub.1 -antagonist activity
Inventor:
Richard A. Earl
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Mar 9, 1995
Inventor
Richard A. Earl
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.