Granted Patent
Utility
US 6,238,426 · App. 09/356,938
Real-time monitoring of photodynamic therapy over an extended time
Inventor:
James C. Chen
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Jul 19, 1999
Inventor
James C. Chen
Assignee (at issue)
Light Sciences LLC
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.