Granted Patent
Utility
US 5,209,850 · App. 07/901,318
Hydrophilic membranes
Inventors:
Dilip R. Abayasekara, Robert Lyon Henn
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Jun 19, 1992
Inventors
Dilip R. Abayasekara
Robert Lyon Henn
Assignee (at issue)
W. L. Gore & Associates, Inc.
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.