Granted Patent
Utility
US 5,401,864 · App. 08/145,890
Process for preparing 21 acyloxy-.DELTA.4,9(11),16 pregnatrienes 3-20-dione
Inventors:
Francis Brion, Jean Buendia, Christian Diolez, Michel Vivat
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Oct 29, 1993
Inventors
Francis Brion
Jean Buendia
Christian Diolez
Michel Vivat
Assignee (at issue)
Roussel Uclaf
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.