Granted Patent
Utility
US 4,614,524 · App. 06/687,714
Water-free hydrocarbon separation membrane and process
Inventor:
Menahem Kraus
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Dec 31, 1984
Inventor
Menahem Kraus
Assignee (at issue)
Monsanto Company
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.