Granted Patent
Utility
US 6,433,901 · App. 09/838,362
Optical performance monitor
Inventor:
Simon Cao
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Apr 19, 2001
Inventor
Simon Cao
Assignee (at issue)
Avanex Corporation
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.