Granted Patent
Utility
US 6,013,053 · App. 08/649,439
Balloon catheter for photodynamic therapy
Inventors:
Bob Bower, Mike Stonefield, Joseph Yan
Patented Case
View Patent ↗
Granted: Jan 11, 2000
Filed: May 17, 1996
Inventors
Bob Bower
Mike Stonefield
Joseph Yan
Assignee (at issue)
QLT PhotoTherapeutices 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.