Granted Patent
Utility
US 5,690,831 · App. 08/559,124
Method of rinsing back blood to hemodialysis patient
Inventors:
Rodney S. Kenley, Dawn Matthews, Dennis M. Treu, Frederick H. Peter, Jr., Thomas M. Feldsein
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Nov 17, 1995
Inventors
Rodney S. Kenley
Dawn Matthews
Dennis M. Treu
Frederick H. Peter, Jr.
Thomas M. Feldsein
Assignee (at issue)
AKsys GmbH
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.