Granted Patent
Utility
US 6,177,049 · App. 09/095,873
Reversing flow blood processing system
Inventors:
William J. Schnell, David S. Utterberg, Ting Ting Yu
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Jun 10, 1998
Inventors
William J. Schnell
David S. Utterberg
Ting Ting Yu
Assignee (at issue)
DSU Medical Corp.
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.