Granted Patent
Utility
US 4,530,703 · App. 06/509,636
Cross-linked polyarylene oxide membranes
Inventors:
Raymond F. Malon, Anthony Zampini
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Jun 30, 1983
Inventors
Raymond F. Malon
Anthony Zampini
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.