Granted Patent
Utility
US 5,294,704 · App. 07/971,189
4,9(11),17(20)-pregnatriene-3-ones
Inventors:
Francis Brion, Jean Buendia, Christian Diolez, Michel Vivat
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Nov 4, 1992
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.