Granted Patent
Utility
US 4,409,330 · App. 06/209,872
Material and method for removing immunoglobulins from whole blood
Inventor:
John K. Pollard, Jr.
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Nov 24, 1980
Inventor
John K. Pollard, Jr.
Assignee (at issue)
American Hoechst Corporation
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.