Granted Patent
Utility
US 6,685,664 · App. 09/876,185
Method and apparatus for ultrafiltration utilizing a long peripheral access venous cannula for blood withdrawal
Inventors:
Howard R. Levin, Mark Gelfand, Steve Bernard
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Jun 8, 2001
Inventors
Howard R. Levin
Mark Gelfand
Steve Bernard
Assignee (at issue)
CHF Solutions, Inc.
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.