Granted Patent
Utility
US 4,565,652 · App. 06/643,465
Process for removing lipoproteins using derivatized polyhydroxymethylene
Inventor:
Rudolf Schmidtberger
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Aug 23, 1984
Inventor
Rudolf Schmidtberger
Assignee (at issue)
Behringwerke Aktiengesellschaft
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.