Granted Patent
Utility
US 6,524,231 · App. 09/389,935
Blood separation chamber with constricted interior channel and recessed passage
Inventors:
Tom Westberg, Kelly Smith, Michel Joie
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Sep 3, 1999
Inventors
Tom Westberg
Kelly Smith
Michel Joie
Assignee (at issue)
Baxter International 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.