Granted Patent
Utility
US 6,374,013 · App. 09/471,439
Optical arrayed waveguide grating devices
Inventors:
James Whiteaway, Alan Fielding, Terry Bricheno
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Dec 23, 1999
Inventors
James Whiteaway
Alan Fielding
Terry Bricheno
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.