Granted Patent
Utility
US 6,175,671 · App. 09/165,053
Photonic crystal waveguide arrays
Inventor:
Kim B. Roberts
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Oct 1, 1998
Inventor
Kim B. Roberts
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.