Granted Patent
Utility
US 4,551,278 · App. 06/604,734
Preparation of 20-keto-.DELTA..sup.16 -steroids
Inventors:
Albert M. van Leusen, Adriaan M. van Leusen
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Apr 27, 1984
Inventors
Albert M. van Leusen
Adriaan M. van Leusen
Assignee (at issue)
Gist-Brocades N.V.
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.