Granted Patent
Utility
US 4,338,316 · App. 06/079,176
9-Aryloxy prostane derivatives
Inventor:
Peter R. Marsham
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Sep 26, 1979
Inventor
Peter R. Marsham
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.