Granted Patent
Utility
US 6,200,340 · App. 09/284,000
Tilting disk heart valve having cavitation reducing contact geometry
Inventor:
Louis A. Campbell
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Apr 1, 1999
Inventor
Louis A. Campbell
Assignee (at issue)
Sulzer Carbomedics 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.