Granted Patent
Utility
US 6,315,895 · App. 09/474,855
Dual-stage hemodiafiltration cartridge
Inventors:
James Summerton, Gregory R. Collins
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Dec 30, 1999
Inventors
James Summerton
Gregory R. Collins
Assignee (at issue)
Nephros 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.