Granted Patent
Utility
US 5,658,456 · App. 08/559,148
Batch dialysate chemical vessel with machine-readable indicator
Inventors:
Rodney S. Kenley, Dawn Matthews, Douglas L. Wilkerson, Dennis M. Treu, Donald C. Walker
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Nov 17, 1995
Inventors
Rodney S. Kenley
Dawn Matthews
Douglas L. Wilkerson
Dennis M. Treu
Donald C. Walker
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.