Granted Patent
Utility
US 4,353,799 · App. 05/901,945
Hydrophobic diffusion membranes for blood having wettable surfaces
Inventor:
Ronald J. Leonard
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: May 1, 1978
Inventor
Ronald J. Leonard
Assignee (at issue)
Baxter Travenol Laboratories, 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.