Granted Patent
Utility
US 4,614,621 · App. 06/602,300
Ethynylation of 16-methylene-17-keto steroids
Inventor:
Verlan H. VanRheenen
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Apr 20, 1984
Inventor
Verlan H. VanRheenen
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.