Granted Patent
Utility
US 4,267,352 · App. 06/126,493
19-Hydroxy-19-methyl-6-oxo-PGF.sub.1 sulfonylamides
Inventor:
John C. Sih
Patented Case
View Patent ↗
Granted: May 12, 1981
Filed: Mar 3, 1980
Inventor
John C. Sih
Assignee (at issue)
The Upjohn Co.
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.