Granted Patent
Utility
US 6,690,886 · App. 09/469,783
Suppression of four-wave mixing in ultra dense WDM optical communication systems through optical fibre dispersion map design
Inventor:
Martin Guy
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Dec 22, 1999
Inventor
Martin Guy
Assignee (at issue)
Nortel Networks Limited
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.