Granted Patent
Utility
US 6,674,559 · App. 09/933,222
Optical automatic gain control based on stable, non-absorbing optical hard limiters
Inventors:
Erik Johnson, Edward Hartley Sargent
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Aug 20, 2001
Inventors
Erik Johnson
Edward Hartley Sargent
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.